Answer:
Nucleus (as nuclear DNA),mitochondrial(mitochondrial DNA) and chloroplasts.
DNA is packed tightly around protein called Histones, in Eukaryotes cells;so that many molecules can easily be held together as chromosomes.
Chromosomes are thread-like structure in nucleus of cells.The histones provide support to the DNA molecule
The part DNA molecule coded for by a polypeptide is GENE, therefore in the nucleus of cells, DNA contains GENE,and the gene and DNA are packed in chromosomes,DNA appears as circular DNA mitochondria
Explanation:
Answer:
A) one human somatic cell
Explanation:
A human genome is a complete set of DNA in somatic cell and it contains 23 chromosome pairs (nuclear genome). Beside nuclear genome cell also have mitochondrial genome. Unlike somatic cells (diploid-two sets of chromosomes, one from mother and one from father), germ cells (egg cell and sperm cells) are haploid, have only one set of chromosomes.
Human genomes include genes that are protein-coding but also noncoding DNA.
A Protein Pump :- Protein pumps use energy from hydrolysis of ATP to move ions or large molecules across cell membrane.
Purpose of a Protein Pump :- In a Protein Pump the proteins help in active transport of molecules. Example, Membrane proteins are very specific and help in active transport. These proteins are positioned to cross the membrane so one part on the inside of the cell and one part is on the outside of the cell. Only when they cross the bilayer(cell membrane) they are able to move molecules and ions in and out of the cell.
Need for a Protein pump to work :- In active transport, A protein pump changes its shape when allows movement of molecules and therefore requires energy in the form of ATP. They use the energy of ATP hydrolysis to move ions or small molecules across a membrane.
Mitosis is the process by which a cell (more strictly the nucleus of a cell) divides into two.
She is in the perimenopausal phase of menopause.
