Answer:
The correct answer is option A.
Explanation:
Cell cycle checkpoints are regulating mechanism that ensures the presence and viability of the cellular components essential for cell division.
There are three major checkpoints one G1 second at M phase and third is G2 checkpoint. M phase checkpoint ensures for chromosome spindle attachment. G1 checkpoint checks the nutrients, DNA damage and growth.
Thus, the correct answer is option A.
After holding the weight for so long, the muscle would get tired, in an effort to tell the brain to stop holding the weight because the muscle fibers cannot handle it any more. Lactic acid is a by-product during muscle contraction that leads to the pain.
Answer:
Classification of organisms is done while considering many factors such as:
Cell type- whether the organism is prokaryotic or eukaryotic
Cell structure- This includes both the presence and composition of the cell wall
Body type- whether the organism is multicellular or unicellular
Mode of nutrition- the method through which the organism achieves its nutritional requirement, by consuming other organisms (heterotroph) or making its own food (autotroph)
Answer:
D. None of the above.
<h2>....Hope it helps you...</h2>
B.) Support and protect the cell.
