Answer: passive transport moves down a concentration gradient
Explanation:
Energy-requiring transport is not passive
Answer:
A
Explanation:
Cardiovascular diseases involves the heart.
Any of the above options with regards to blood (etc, white blood cells, red blood cells) are related to circulatory system, not affecting the function of the heart.
Stem cells performing apoptosis to remove old cells is a myth. Stem cells can only differentiate to form cells of the same lineage, not causing other cells to undergo apoptosis. The only external factor that can cause cells to undergo apoptosis is a type lymphocyte in the immune system
You are likely to see a connotation used in both advertisement and also some university lectures. If only one answer is permitted, B is the best answer.
<span>Cell responses b and c would both occur when cell exposed to the a+b signaling molecules.
The presence of the C signaling molecule will lead to cell response c. Cell response b occurs because the activation of c2 in the C pathway stimulates b1, leading to cell response b. Cell response A remains inactivated because it is inhibited by pathway b activation and its signaling molecule was not present.</span>
