| Analysis of the search query | where is the chromosome in a plant cell |
| Competition | Low |
| The average cost per click Adsense | 0.48 € |
| The expected traffic per day | 14 |
| The expected traffic per month | 420 |
| Income per month | 420 € |
Top competitors on query "where is the chromosome in a plant cell"
http://waynesword.palomar.edu/lmexer1a.htm Competition: low
During this process, electrons are shuttled through an iron-containing cytochrome enzyme system along membranes of the cristae which result in the phosphorylation of ADP (adenosine diphosphate) to form ATP (adenosine triphosphate). In fact, chloroplast DNA, including the protein-coding RBCL gene, is often used at the family level to show the relationships between genera and species within plant families
Cells and DNA - Genetics Home Reference
http://ghr.nlm.nih.gov/handbook/basics?show=all Competition: low
They are also necessary for the production of substances such as cholesterol and heme (a component of hemoglobin, the molecule that carries oxygen in the blood). The remaining genes provide instructions for making molecules called transfer RNAs (tRNAs) and ribosomal RNAs (rRNAs), which are chemical cousins of DNA
http://scienceray.com/biology/botany/parts-of-a-plant-cell/ Competition: low
On July 17, 2011 at 10:54 am hi, what makes the plant cell rigid? what part of the plant cell stores water and nutrients? what is part of the plant cell that helps perform photosynthesis? Mizz Gumiho Says... Smooth Endoplasmic Reticulum The function of the smooth endoplasmic reticulum is to package proteins for transport, synthesize membrane phosolipids, and releases calcium
Sex-Determining Mechanisms in Land Plants
http://www.plantcell.org/content/16/suppl_1/S61.full Competition: low
latifolia has been to clone genes that are expressed specifically in the male flowers and determine their linkage to the Y chromosome (reviewed by Charlesworth, 2002). Although the structure of the Ceratopteris antheridiogen is unknown, all other fern antheridiogens characterized to date are mostly novel gibberellins (Yamane, 1998)
How many chromosomes does a sperm Cell have
http://wiki.answers.com/Q/How_many_chromosomes_does_a_sperm_Cell_have Competition: low
Last edit by Betaclamp Answer History Related Answers: How many chromosomes does a sperm Cell have? Haploid, or gametic, human Cells have a chromosome number of n which is 23 individual chromosomes. How many chromosomes does a sperm cell have at prophase I? Sperm are all 1N (half the complement of chromosomes of the original male).Prophase 1 in meiosis the How many chromosomes are in a sperm Cell? There are 23 chromosomes in a human sperm cell
The Plant Cell
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/PlantCell.html Competition: low
The linear nature of cellulose molecules and the many opportunities for side-to-side intermolecular hydrogen bonding provide just what one would want to build long, stiff fibrils. Plasma membrane Nucleus and nucleolus Mitochondria Ribosomes Endoplasmic reticulum Golgi apparatus Peroxisomes (the crystal in the electron micrograph is enclosed within a peroxisome) Microtubules Plant cells differ from animal cells in lacking: centrioles intermediate filaments and having: plastids a cell wall large vacuoles The electron micrograph shows cells from a sunflower leaf
http://www.enchantedlearning.com/subjects/plants/glossary/indexc.shtml Competition: low
An example pf commensalism is bromeliads (plants living on trees in rainforests) and frogs; the frogs get shelter and water from the bromeliad but the bromeliad is unaffected. C C3 PLANTA C3 plant is one that produces phosphoglyceric acid, (a molecule that has three carbon atoms) as a stable intermediary in the first step in photosynthesis (the Calvin Cycle)
http://uk.answers.yahoo.com/question/index?qid=20080520043840AAziirj Competition: low
Anaphase: (separation phase) the chromosomes split in the middle and the sister chromatids are pulled by the spindle fibers to opposite poles of the cell. Metaphase: (organizational phase) the chromosomes line up the middle of the cell with the help of spindle fibers attached to the centromere of each replicated chromosome
Cell Division
http://preuniversity.grkraj.org/html/2_CELL_DIVISION.htm Competition: low
But the cloning techniques have made life easy and these products can be synthesized on a large scale, thus the cost of production as come down which is a great boon for common man. In all the above said cases and all other organisms, the plant or the animal body is diploid (2 n), such organisms resort to sexual reproduction by means of gamates
Cell Models: An Interactive Animation
http://cellsalive.com/cells/cell_model.htm Competition: low
Smooth ER plays different functions depending on the specific cell type including lipid and steroid hormone synthesis, breakdown of lipid-soluble toxins in liver cells, and control of calcium release in muscle cell contraction. Smooth Endoplasmic Reticulum: Throughout the eukaryotic cell, especially those responsible for the production of hormones and other secretory products, is a vast network of membrane-bound vesicles and tubules called the endoplasmic reticulum, or ER for short
http://www.diffen.com/difference/Animal_cell_vs_plant_cell Competition: low
Great job on the way you have everything so well organized.It is easy to understand and it is easy on the eyes ! The font is just the right size and the layout is outstanding! I know where to look in the future for answers. Nucleus: Present Present Cilia: Present It is very rare Contents 1 Chloroplasts 2 Shape 3 Vacuoles 3.1 Shape and size of vacuoles 3.2 Difference in function of vacuoles 4 Pictures of plant and animal cells 5 Video comparing plant and animal cells 6 Further Reading 7 Related Articles 8 References Chloroplasts Plant cells have chloroplast for photosynthesis whereas animal cells do not have chloroplasts
Plant Cell Advance Online Publication Papers
http://www.plantcell.org/rss/ahead.xml Competition: low
The molecular basis of callus formation has long been obscure, but we are finally beginning to understand how unscheduled cell proliferation is suppressed during normal plant development and how genetic and environmental cues override these repressions to induce callus formation. In coordination with other systemic signals and abscisic acid, it activates systemic acclimation mechanisms in the entire plant and enhances tolerance to abiotic stress
Cell division and chromosomes
http://www.biotopics.co.uk/life/celdiv.html Competition: low
The contents of the nucleus The nucleus contains some coiled strand-like bodies known as chromosomes , which are only really visible in dividing cells, when they will absorb stain. In some cases these cells can accept DNA containing genes from a completely different source, and there are a wide number of possible benefits in medicine as well as industrial manufacturing
http://www.ehow.com/facts_5207244_many-found-human-body-cells_.html Competition: low
The cell's nucleus primarily contains chromosomes, in addition to the nucleolus and protein particles, that are organized in pairs of sequences that replicate (duplicate) during cellular reproduction. The sex cells are produced through meiosis, a process which adds another step to the cell reproduction cycle so that the chromosome pairs are split, enabling sex cells to combine later during fertilization
http://www.kn.pacbell.com/wired/fil/pages/listcellsr1.html Competition: low
Online Onion Root Tips - Determine for yourself the stages of mitosis by looking at actual slides of onion root tip cells Mitosis Wordsearch - Unscramble the following words and find them in the wordsearch. The Internet Resources Parts of a cell Animal Cells--The Amazing Variety - You meet Chloe's animal cell friends and see the amazing things they do Parts of a cell - Diagram with labels and links for detailed descriptions
Chromosomes and Sex
http://biology.about.com/od/basicgenetics/p/chromosgender.htm Competition: low
The zygote is diploid, meaning that it contains two sets of chromosomes.Sex Chromosomes X-Y:The male gametes or sperm cells in humans and other mammals are heterogametic and contain one of two types of sex chromosomes. If a sperm cell containing no sex chromosome fertilizes an egg, the resulting zygote will be XO or male.Sex Chromosomes Z-W:Birds, insects like butterflies, frogs and some species of fish have a different system for determining gender
Chromosomes and Genetics
http://preuniversity.grkraj.org/html/9_GENETICS.htm Competition: low
Law of Segregation A pair of allelic genes that are present in an n organism for a given character, separate or segregate in equal ratios during gamete formation. However, in 1900, three biologists, Hugo Devries, Tschermak and Correns, while publishing their independent works on inheritance found Mendel's paper and to their surprise they realized that Mendel had already discovered of what they wanted or considered to be an important discovery
http://library.thinkquest.org/5420/cellsplt.html Competition: low
Did you know that the largest suppliers of oxygen in the whole world are tiny plants known as photoplankton? They are found in the oceans and are really important to giving us the oxygen needed to keep life going on our planet. If you would like to see an actual photograph of a chloroplast viewed through the lens of an electron microscope, visit the Nanoworld Image Gallery (you'll need to register in order to view the gallery)
http://quizlet.com/5536289/holt-biology-chapter-67-chromosomes-and-cell-reproductionmeiosis-flash-cards/ Competition: low
New Spindle forms Metaphase II Chromosomes line up at the MIDDLE of the cell, move to equator Anaphase II Sister Chromatids separate and move to opposite sides(poles) of the cell. gametes Reproductive Cells zygote a fertilized egg spindle fibers help pull apart the cell during replication and are made up of micrtubules centrioles two tiny structures located in the cytoplasm near the nuclear envelope mitosis cell division in which the nucleus divides into nuclei containing the same number of chromosomes cytokinesis organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells cell plate A double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis
http://biology.clc.uc.edu/courses/bio104/mitosis.htm Competition: low
Each of these cultures can be subjected to a different drug, thus enabling doctors to find the right drug sooner, while it may still be of help, and without needlessly subjecting the person to many kinds of toxic chemicals. The nuclear envelope has totally disintegrated and the polar fibers have reached the centromeres of the chromosomes and have begun interacting with them
iKnow - Phases of Mitosis in Plant and Animal Cells
http://iknow.net/cell_div_education.html Competition: low
The typical cell cycle is divided into two phases: a brief mitotic phase in which the cell divides its nuclear and cytoplasmic contents, and a longer period between divisions called interphase. During mitosis and cytokinesis, each of the two daughter cells will receive an exact copy of the parent cell's chromosomes and roughly half of the cytoplasm
http://quizlet.com/9314096/dna-chromosomes-the-cell-cycle-mitosis-and-meiosis-flash-cards/ Competition: low
spindle fibers disassemble cytokinesis the parent cell splits into two identical daughter cells what is the difference between animal cells and plant cells? animal cells: cleavage furrow plant cells: cell plate What is the overall outcome of meiosis? four haploid cells homologous pair two similar chromosomes gamete reproductive cell (sperm and egg) somatic cell non reproductive body cells prophase 1 -chromatin condenses into chromosomes -nucleus begins to disappear -spindle fibers appear -homologous chromosomes pair up- SYNAPSIS synapsis when two homologous chromosomes pair up tetrad homologous chromosomes that pair up What is crossing over? parts of chromatids that are next to eachother may break off and switch places (genetic recombinations) Metaphase 1 tetrads line up randomly at the center of the cell... spindle fibers attach anaphase 1 homolgous chromosomes are pulled to opposite ends of the cell What is independent assortment? the random separation of chromosomes
http://dictionary.reference.com/browse/chromosome Competition: low
any of several threadlike bodies, consisting of chromatin, that carry the genes in a linear order: the human species has 23 pairs, designated 1 to 22 in order of decreasing size and X and Y for the female and male sex chromosomes respectively. Chromosomes occur in pairs in all of the cells of eukaryotes except the reproductive cells, which have one of each chromosome, and some red blood cells (such as those of mammals) that expel their nuclei
Chromosomes
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/C/Chromosomes.html Competition: low
univalens (parasitic roundworm)2 Cambarus clarkii (a crayfish)200 Equisetum arvense (field horsetail, a plant)216 Karyotypes The complete set of chromosomes in the cells of an organism is its karyotype. (In plants, the haploid stage takes up a larger part of its life cycle - Link) Diploid numbers of some commonly studied organisms (as well as a few extreme examples) Homo sapiens (human)46 Mus musculus (house mouse)40 Drosophila melanogaster (fruit fly)8 Caenorhabditis elegans (microscopic roundworm)12 Saccharomyces cerevisiae (budding yeast)32 Arabidopsis thaliana (plant in the mustard family)10 Xenopus laevis (South African clawed frog)36 Canis familiaris (domestic dog)78 Gallus gallus (chicken)78 Zea mays (corn or maize)20 Muntiacus reevesi (the Chinese muntjac, a deer)23 Muntiacus muntjac (its Indian cousin)6 Myrmecia pilosula (an ant)2 Parascaris equorum var
Plant cells vs. Animal cells - Biology Online
http://www.biology-online.org/11/1_plant_cells_vs_animal_cells.htm Competition: low
A plant cell is bounded by a cell wall and the living portion of the cell is within the walls and is divided into two portions: the nucleus, or central control center; and the cytoplasm, a fluid in which membrane bound organelles are found. The proteins synthesized on ribosomes bound to granular endoplasmic reticulum are transferred from the lumen (open space inside endoplasmic reticulum) to the golgi apparatus for secretion outside the cell or distribution to other organelles
What is the chromosome number in daughter cells formed by meiosis from diploid parent cells? - Yahoo! Answers
http://answers.yahoo.com/question/index?qid=20070812095642AA3p6ld Competition: low
However, in thinking about this process, what would happen if both gametes had the same number of chromosomes as the rest of the cells in the organism? When they fused to become a zygote, they would have two times the number of chromosomes as the rest of the cells in the organism. Reproduction can occur in several ways as vegetative propagation, such as in the development of runners in strawberry plants, or by special cells called vegetative spores which are products of mitosis
Plant cell - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Plant_cell Competition: low
Other types of plastids are the amyloplasts, specialized for starch storage, elaioplasts specialized for fat storage, and chromoplasts specialized for synthesis and storage of pigments. Xylem tracheids are pointed, elongated xylem cells, the simplest of which have continuous primary cell walls and lignified secondary wall thickenings in the form of rings, hoops, or reticulate networks
Chromosomes in cells - Human Molecular Genetics - NCBI Bookshelf
http://www.ncbi.nlm.nih.gov/books/NBK7572/ Competition: low
At the early stages of development, individual cells in the embryo are totipotent: each cell retains the capacity to differentiate into all the different types of cell in the body. Other cells (often distinguished by the suffix -blast , as in osteoblasts, chondroblasts, myoblasts, etc.) divide actively and act as precursors of terminally differentiated cells
http://micro.magnet.fsu.edu/cells/plantcell.html Competition: low
In higher plants, the diploid generation, the members of which are known as sporophytes due to their ability to produce spores, is usually dominant and more recognizable than the haploid gametophyte generation. By the Carboniferous Period, about 355 million years ago, most of the Earth was covered by forests of primitive vascular plants, such as lycopods (scale trees) and gymnosperms (pine trees, ginkgos)
Chromosome - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Chromosome Competition: low
Compaction of the duplicated chromosomes during mitosis and meiosis results in the classic four-arm structure (pictured to the right) if the centromere is located in the middle of the chromosome or a two-arm structure if the centromere is located near one of the ends. In the nuclear chromosomes of eukaryotes, the uncondensed DNA exists in a semi-ordered structure, where it is wrapped around histones (structural proteins), forming a composite material called chromatin
During this process, electrons are shuttled through an iron-containing cytochrome enzyme system along membranes of the cristae which result in the phosphorylation of ADP (adenosine diphosphate) to form ATP (adenosine triphosphate). In fact, chloroplast DNA, including the protein-coding RBCL gene, is often used at the family level to show the relationships between genera and species within plant families
Cells and DNA - Genetics Home Reference
They are also necessary for the production of substances such as cholesterol and heme (a component of hemoglobin, the molecule that carries oxygen in the blood). The remaining genes provide instructions for making molecules called transfer RNAs (tRNAs) and ribosomal RNAs (rRNAs), which are chemical cousins of DNA
On July 17, 2011 at 10:54 am hi, what makes the plant cell rigid? what part of the plant cell stores water and nutrients? what is part of the plant cell that helps perform photosynthesis? Mizz Gumiho Says... Smooth Endoplasmic Reticulum The function of the smooth endoplasmic reticulum is to package proteins for transport, synthesize membrane phosolipids, and releases calcium
Sex-Determining Mechanisms in Land Plants
latifolia has been to clone genes that are expressed specifically in the male flowers and determine their linkage to the Y chromosome (reviewed by Charlesworth, 2002). Although the structure of the Ceratopteris antheridiogen is unknown, all other fern antheridiogens characterized to date are mostly novel gibberellins (Yamane, 1998)
How many chromosomes does a sperm Cell have
Last edit by Betaclamp Answer History Related Answers: How many chromosomes does a sperm Cell have? Haploid, or gametic, human Cells have a chromosome number of n which is 23 individual chromosomes. How many chromosomes does a sperm cell have at prophase I? Sperm are all 1N (half the complement of chromosomes of the original male).Prophase 1 in meiosis the How many chromosomes are in a sperm Cell? There are 23 chromosomes in a human sperm cell
The Plant Cell
The linear nature of cellulose molecules and the many opportunities for side-to-side intermolecular hydrogen bonding provide just what one would want to build long, stiff fibrils. Plasma membrane Nucleus and nucleolus Mitochondria Ribosomes Endoplasmic reticulum Golgi apparatus Peroxisomes (the crystal in the electron micrograph is enclosed within a peroxisome) Microtubules Plant cells differ from animal cells in lacking: centrioles intermediate filaments and having: plastids a cell wall large vacuoles The electron micrograph shows cells from a sunflower leaf
An example pf commensalism is bromeliads (plants living on trees in rainforests) and frogs; the frogs get shelter and water from the bromeliad but the bromeliad is unaffected. C C3 PLANTA C3 plant is one that produces phosphoglyceric acid, (a molecule that has three carbon atoms) as a stable intermediary in the first step in photosynthesis (the Calvin Cycle)
Anaphase: (separation phase) the chromosomes split in the middle and the sister chromatids are pulled by the spindle fibers to opposite poles of the cell. Metaphase: (organizational phase) the chromosomes line up the middle of the cell with the help of spindle fibers attached to the centromere of each replicated chromosome
Cell Division
But the cloning techniques have made life easy and these products can be synthesized on a large scale, thus the cost of production as come down which is a great boon for common man. In all the above said cases and all other organisms, the plant or the animal body is diploid (2 n), such organisms resort to sexual reproduction by means of gamates
Cell Models: An Interactive Animation
Smooth ER plays different functions depending on the specific cell type including lipid and steroid hormone synthesis, breakdown of lipid-soluble toxins in liver cells, and control of calcium release in muscle cell contraction. Smooth Endoplasmic Reticulum: Throughout the eukaryotic cell, especially those responsible for the production of hormones and other secretory products, is a vast network of membrane-bound vesicles and tubules called the endoplasmic reticulum, or ER for short
Great job on the way you have everything so well organized.It is easy to understand and it is easy on the eyes ! The font is just the right size and the layout is outstanding! I know where to look in the future for answers. Nucleus: Present Present Cilia: Present It is very rare Contents 1 Chloroplasts 2 Shape 3 Vacuoles 3.1 Shape and size of vacuoles 3.2 Difference in function of vacuoles 4 Pictures of plant and animal cells 5 Video comparing plant and animal cells 6 Further Reading 7 Related Articles 8 References Chloroplasts Plant cells have chloroplast for photosynthesis whereas animal cells do not have chloroplasts
Plant Cell Advance Online Publication Papers
The molecular basis of callus formation has long been obscure, but we are finally beginning to understand how unscheduled cell proliferation is suppressed during normal plant development and how genetic and environmental cues override these repressions to induce callus formation. In coordination with other systemic signals and abscisic acid, it activates systemic acclimation mechanisms in the entire plant and enhances tolerance to abiotic stress
Cell division and chromosomes
The contents of the nucleus The nucleus contains some coiled strand-like bodies known as chromosomes , which are only really visible in dividing cells, when they will absorb stain. In some cases these cells can accept DNA containing genes from a completely different source, and there are a wide number of possible benefits in medicine as well as industrial manufacturing
The cell's nucleus primarily contains chromosomes, in addition to the nucleolus and protein particles, that are organized in pairs of sequences that replicate (duplicate) during cellular reproduction. The sex cells are produced through meiosis, a process which adds another step to the cell reproduction cycle so that the chromosome pairs are split, enabling sex cells to combine later during fertilization
Online Onion Root Tips - Determine for yourself the stages of mitosis by looking at actual slides of onion root tip cells Mitosis Wordsearch - Unscramble the following words and find them in the wordsearch. The Internet Resources Parts of a cell Animal Cells--The Amazing Variety - You meet Chloe's animal cell friends and see the amazing things they do Parts of a cell - Diagram with labels and links for detailed descriptions
Chromosomes and Sex
The zygote is diploid, meaning that it contains two sets of chromosomes.Sex Chromosomes X-Y:The male gametes or sperm cells in humans and other mammals are heterogametic and contain one of two types of sex chromosomes. If a sperm cell containing no sex chromosome fertilizes an egg, the resulting zygote will be XO or male.Sex Chromosomes Z-W:Birds, insects like butterflies, frogs and some species of fish have a different system for determining gender
Chromosomes and Genetics
Law of Segregation A pair of allelic genes that are present in an n organism for a given character, separate or segregate in equal ratios during gamete formation. However, in 1900, three biologists, Hugo Devries, Tschermak and Correns, while publishing their independent works on inheritance found Mendel's paper and to their surprise they realized that Mendel had already discovered of what they wanted or considered to be an important discovery
Did you know that the largest suppliers of oxygen in the whole world are tiny plants known as photoplankton? They are found in the oceans and are really important to giving us the oxygen needed to keep life going on our planet. If you would like to see an actual photograph of a chloroplast viewed through the lens of an electron microscope, visit the Nanoworld Image Gallery (you'll need to register in order to view the gallery)
New Spindle forms Metaphase II Chromosomes line up at the MIDDLE of the cell, move to equator Anaphase II Sister Chromatids separate and move to opposite sides(poles) of the cell. gametes Reproductive Cells zygote a fertilized egg spindle fibers help pull apart the cell during replication and are made up of micrtubules centrioles two tiny structures located in the cytoplasm near the nuclear envelope mitosis cell division in which the nucleus divides into nuclei containing the same number of chromosomes cytokinesis organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells cell plate A double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis
Each of these cultures can be subjected to a different drug, thus enabling doctors to find the right drug sooner, while it may still be of help, and without needlessly subjecting the person to many kinds of toxic chemicals. The nuclear envelope has totally disintegrated and the polar fibers have reached the centromeres of the chromosomes and have begun interacting with them
iKnow - Phases of Mitosis in Plant and Animal Cells
The typical cell cycle is divided into two phases: a brief mitotic phase in which the cell divides its nuclear and cytoplasmic contents, and a longer period between divisions called interphase. During mitosis and cytokinesis, each of the two daughter cells will receive an exact copy of the parent cell's chromosomes and roughly half of the cytoplasm
spindle fibers disassemble cytokinesis the parent cell splits into two identical daughter cells what is the difference between animal cells and plant cells? animal cells: cleavage furrow plant cells: cell plate What is the overall outcome of meiosis? four haploid cells homologous pair two similar chromosomes gamete reproductive cell (sperm and egg) somatic cell non reproductive body cells prophase 1 -chromatin condenses into chromosomes -nucleus begins to disappear -spindle fibers appear -homologous chromosomes pair up- SYNAPSIS synapsis when two homologous chromosomes pair up tetrad homologous chromosomes that pair up What is crossing over? parts of chromatids that are next to eachother may break off and switch places (genetic recombinations) Metaphase 1 tetrads line up randomly at the center of the cell... spindle fibers attach anaphase 1 homolgous chromosomes are pulled to opposite ends of the cell What is independent assortment? the random separation of chromosomes
any of several threadlike bodies, consisting of chromatin, that carry the genes in a linear order: the human species has 23 pairs, designated 1 to 22 in order of decreasing size and X and Y for the female and male sex chromosomes respectively. Chromosomes occur in pairs in all of the cells of eukaryotes except the reproductive cells, which have one of each chromosome, and some red blood cells (such as those of mammals) that expel their nuclei
Chromosomes
univalens (parasitic roundworm)2 Cambarus clarkii (a crayfish)200 Equisetum arvense (field horsetail, a plant)216 Karyotypes The complete set of chromosomes in the cells of an organism is its karyotype. (In plants, the haploid stage takes up a larger part of its life cycle - Link) Diploid numbers of some commonly studied organisms (as well as a few extreme examples) Homo sapiens (human)46 Mus musculus (house mouse)40 Drosophila melanogaster (fruit fly)8 Caenorhabditis elegans (microscopic roundworm)12 Saccharomyces cerevisiae (budding yeast)32 Arabidopsis thaliana (plant in the mustard family)10 Xenopus laevis (South African clawed frog)36 Canis familiaris (domestic dog)78 Gallus gallus (chicken)78 Zea mays (corn or maize)20 Muntiacus reevesi (the Chinese muntjac, a deer)23 Muntiacus muntjac (its Indian cousin)6 Myrmecia pilosula (an ant)2 Parascaris equorum var
Plant cells vs. Animal cells - Biology Online
A plant cell is bounded by a cell wall and the living portion of the cell is within the walls and is divided into two portions: the nucleus, or central control center; and the cytoplasm, a fluid in which membrane bound organelles are found. The proteins synthesized on ribosomes bound to granular endoplasmic reticulum are transferred from the lumen (open space inside endoplasmic reticulum) to the golgi apparatus for secretion outside the cell or distribution to other organelles
What is the chromosome number in daughter cells formed by meiosis from diploid parent cells? - Yahoo! Answers
However, in thinking about this process, what would happen if both gametes had the same number of chromosomes as the rest of the cells in the organism? When they fused to become a zygote, they would have two times the number of chromosomes as the rest of the cells in the organism. Reproduction can occur in several ways as vegetative propagation, such as in the development of runners in strawberry plants, or by special cells called vegetative spores which are products of mitosis
Plant cell - Wikipedia, the free encyclopedia
Other types of plastids are the amyloplasts, specialized for starch storage, elaioplasts specialized for fat storage, and chromoplasts specialized for synthesis and storage of pigments. Xylem tracheids are pointed, elongated xylem cells, the simplest of which have continuous primary cell walls and lignified secondary wall thickenings in the form of rings, hoops, or reticulate networks
Chromosomes in cells - Human Molecular Genetics - NCBI Bookshelf
At the early stages of development, individual cells in the embryo are totipotent: each cell retains the capacity to differentiate into all the different types of cell in the body. Other cells (often distinguished by the suffix -blast , as in osteoblasts, chondroblasts, myoblasts, etc.) divide actively and act as precursors of terminally differentiated cells
In higher plants, the diploid generation, the members of which are known as sporophytes due to their ability to produce spores, is usually dominant and more recognizable than the haploid gametophyte generation. By the Carboniferous Period, about 355 million years ago, most of the Earth was covered by forests of primitive vascular plants, such as lycopods (scale trees) and gymnosperms (pine trees, ginkgos)
Chromosome - Wikipedia, the free encyclopedia
Compaction of the duplicated chromosomes during mitosis and meiosis results in the classic four-arm structure (pictured to the right) if the centromere is located in the middle of the chromosome or a two-arm structure if the centromere is located near one of the ends. In the nuclear chromosomes of eukaryotes, the uncondensed DNA exists in a semi-ordered structure, where it is wrapped around histones (structural proteins), forming a composite material called chromatin
No comments:
Post a Comment