Nucleosomes are composed of "histones" class of molecules.
<u>Explanation:</u>
Histones usually presented in eukaryotic nuclei of cells which seemed as strong level of proteins that bundle and organize DNA into structural groups called nucleosomes in biological science.
They are chromatin's chief protein elements, functioning as spools along which DNA spins, and playing a major role in regulating genes. Five forms of histones have been recognized:
- H1 (or H5), H2A, H2B, H3, and H4;
- H2A, H2B, H3, and H4 are the main histones and H1 and H5 are the linker histones.
True
because ur hart pumps faster and then blood flow increases and the you have more blood delivery to your body
Answer:
True
Explanation:
The lumen of a blood vessel helps determine blood pressure as blood flows through lumen and bp is measured in the lumen of artery
False. Although enzymes work as catalyst, they are not carbohydrates, they are proteins.