1) Pulmonary Circulation:This is the process where
deoxygenated blood is carried away from
the right ventricle of the hearth while oxygenated blood is returned to the
left ventricle and atrium of the heart.
2) Heart: It is a muscular organ that pump blood through the blood
vessels of the circulatory system.
3) Systemic vain: <span>this is a vain that drain into the right right
atrium </span>
4) Physical exertion:It the expenditure of energy expended during physical
activity.
5) Vasoconstriction:It can be defined as the narrowing of the blood vessels which
result into contraction of the muscular wall of the vessels most especially
large arteries and small arterioles.
6) Vasodilation: This is when blood vessel is widening and result in
relaxation of smooth muscle cell within the vessel walls.
<span>Igneous for your question</span>
Answer:
(c) falls toward the end of M phase as a result of ubiquitylation and degradation.
Explanation:
Cyclins are the regulatory proteins of the cell cycle. The levels of cyclins change during the cell cycle. The function of cyclins is to activate cyclin-dependent kinases. Mitotic cyclins undergo specific and precisely timed proteolytic breakdown which in turn regulates CDK activity throughout the cell cycle. A cell can continue the process of mitosis when cyclins A and B are the first activated and then degraded.
The mitotic cyclins contain a destruction box near their amino terminus which in turn targets them for degradation. The destruction box recognizing protein (DBRP) recognizes this sequence and initiates the process of cyclin degradation. DBRP facilitates the interaction of mitotic cyclin and ubiquitin. Cyclin and activated ubiquitin are covalently joined by the enzyme ubiquitin ligase followed by binding of several more ubiquitin molecules.
This process of binding of ubiquitin to the mitotic cyclins is called ubiquitylation and serves to signal a proteolytic enzyme complex, or proteasome, to degrade cyclin.
the correct arrangement of the above sentences is as follows: sentence 3- sentence 5- sentence 2- sentence 6- sentence 1- sentence 4.
In my opinion, chloroplasts and mitochondria can't live outside the cell now because mitochondria ensure the energy for the cell and the chloroplasts is important for photosynthesis. Just my opinion.