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In order for the DNA molecule to get short and fat to become a chromosome it must first wrap around small molecules called?
Wiki User
∙ 15y ago
In order for DNA to exist in the condensed, super-coiled form, it must wrap around proteins called histones
Wiki User
∙ 15y ago
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What is a chromatid?
A chromatid is one half of a chromosome at a stage of the cell cycle when the chromosome contains two molecules of DNA.A chromatid is like a twin; you can only use the term when there are two of them!Before DNA replicates, each chromosome has only one molecule of DNA. After replication of the DNA, there are two DNA molecules in each chromosome. These become visible under a light microscope when the chromosomes condense during prophase of the next division.Each chromosome then looks like an X. The left side of the X contains one DNA molecule (together with proteins) and the right side contains the other. Each half of the chromosome is a chromatid. At anaphase of the division, the two chromatids are pulled apart. From then on they are no longer referred to as chromatids, but as daughter-chromosomes.
How many copies of DNA molecule result from two replication of a single DNA molecule?
Four.
What happens to each products of the Krebs cycle?
Each turn of TCA cycle produces 2 molecules of carbon dioxide, three molecules of NADH and two molecules of FADH2, and one molecule of ATP at the substrate level. The net result of one TCA cycle is the production of 12 ATP.
When chromosome become visible at the beginning of cell division what does each chromosome consist of?
each chromosome consists of two identical "sister" chromatids
What happens after dehydration synthesis occurs?
Dehydration synthesis, aka condensation reactions join smaller molecules, mostly subunits of a larger molecule (e.g. nucleic acids, monosaccharides, amino acids), into larger molecules (e.g. DNA/RNA, polysaccharides, proteins) with the release of one molecule of water per bond formed between smaller subunits.
What is a chromatid?
A chromatid is one half of a chromosome at a stage of the cell cycle when the chromosome contains two molecules of DNA.A chromatid is like a twin; you can only use the term when there are two of them!Before DNA replicates, each chromosome has only one molecule of DNA. After replication of the DNA, there are two DNA molecules in each chromosome. These become visible under a light microscope when the chromosomes condense during prophase of the next division.Each chromosome then looks like an X. The left side of the X contains one DNA molecule (together with proteins) and the right side contains the other. Each half of the chromosome is a chromatid. At anaphase of the division, the two chromatids are pulled apart. From then on they are no longer referred to as chromatids, but as daughter-chromosomes.
Which part of a water molecule becomes solid as it freezes?
When water freezes, water molecules become attached to other water molecules. The phenomenon of freezing occurs on a larger scale than the molecular; you cannot see it by looking at only one molecule. All you would notice about a single molecule is that it is not moving around as much as it used it, before freezing.
Is chlorine a diatomic molecule and why?
Yes because chlorine molecules bond to themselves to become more stable.
Molecules of a liquid to a molecule of water vapor?
It's particles spreadf apart.
Like atoms can molecules can become ions true or false?
Some molecules can become ions, especially at very high temperatures or at other high-energy conditions. For example, a hydrogen molecule can become a positive ion by losing one of its electrons.
What is the result of intermolecular forces being repulsive and attractive at varying distance?
Hydrogen bonds
What happens to the paricles of sugar when a sugarcube is dissolved in water?
the sugar particles turn into ions which attach to the polar molecules of water Each sugar molecule does not become an ion. Each sugar molecule is charge neutral and thus has no charge. When sugar is dissolved in water, the water pulls the sugar molecules apart from each other and the individual sugar molecules no longer touch each other. Each sugar molecule is surrounded by water. The forces between molecules are responsible for this. The polar shape of water molecules is what governs the separation.
Why does ice still melt in water?
Fire is pure energy being released. And it takes energy to move molecules around. Where ice is concerned, the water molecule has been sapped of all energy which causes it to remain in place and stick to other water molecules.. When the energy from fire comes in contact with the water molecule, the molecule absorbs the energy which causes the molecules to break away from each other and move. When the molecules break away and move is what causes a solid like ice to become a liquid.
Multiple atoms joined together by chemical bonds?
molecule
How is gender inheritance?
Gender is inherited from your parent's 23rd chromosome. The (XX) chromosome pair is for a female and the (XY) chromosome pair is for a male. You get a (X) chromosome from your mother because she has two (x)'s. Her 23rd chromosome is (XX). It's your father's chromosome that determines what gender you are. His 23rd chromosomes were (XY). If you get an (X) from him, you become a girl. If you get a (Y) chromosome from him, you become a boy. This all happens when your mother's egg is fertilized.
How does a gas become a liquid?
By cooling. With less thermal energy, the kinetic energy of each molecule becomes less. Therefore some of the gas molecules can no longer escape the attraction of like molecules. As they join together we perceive them as liquid.
When do chromosome become visible in cell?
Chromosones become visible during prophase.
