<span>RNA, also known as Ribonucleic acid, is the molecule that is used when coding and decoding genetic information. It similar to DNA and is assembled as a chain of nucleotides.<span> </span></span>
<span>Nucleus, the control center of the cell is the organelle which intiates, enables, and manages the various simplex. compound and complex cellular activities. It also stores the DNA of the cell which is then replicated and recopied over a hundredth and thousandth times over through cell division processes. In the nucleoplasm -nucleolus, the inner part of nucleus of a cell is where the DNA to mRNA and to protein; vice-versa happens.<span> </span></span>
The tricuspid valve does this between the right atrium and ventricle. ... At the end of diastole, your heart's atria contract and pump blood into the ventricles. The atria then begin to relax. Next, your heart's ventricles contract and pump blood out of your heart.
Answer:
G All cells come from pre existing cells
ATP is used as a substrate in signal transduction pathways by kinases that phosphorylate proteins and lipids. The most common ATP-binding proteins, known as kinases, share a small number of common folds; the protein kinases, the largest kinase superfamily, all share common structural features specialized for ATP binding and phosphate transfer.
ATP in complexes with proteins, in general, requires the presence of a divalent cation, almost always magnesium, which binds to the ATP phosphate groups. The presence of magnesium greatly decreases the dissociation constant of ATP from its protein binding partner without affecting the ability of the enzyme to catalyze its reaction once the ATP has bound.The presence of magnesium ions can serve as a mechanism for kinase regulation
Answer:
False
Explanation:
Diapedesis is the process by which white blood cells move into tissue spaces from the interior of blood capillaries. It is the process of emigration of WBCs from the bloodstream. With the help of adhesion molecules, WBCs become attached to the endothelium of the blood vessels and squeeze between these cells. The adhesion molecules bind to the sugar moieties present on the surface of WBCs. Phagocytic WBCs such as neutrophils arrive at the site of infection by the process of diapedesis only.
