Explanation:
Abscission is the controlled shedding of leaves, flowers, or fruits, facilitated by the hormone ethylene and enzymes that degrade cell walls at the abscission zone. Senescence is the aging process leading to cell death. Transpiration is water loss, germination is seed sprouting.
Explanation:
The bicuspid (mitral) valve has two cusps and closes during ventricular systole to prevent regurgitation into the left atrium. The tricuspid valve is on the right.
Explanation:
Glycolysis, occurring in the cytoplasm, breaks down one molecule of glucose (6C) into two molecules of pyruvate (3C), producing a net gain of 2 ATP and 2 NADH. This is the first step of both aerobic and anaerobic respiration. Pyruvate then enters the mitochondria for further oxidation in the Krebs cycle if oxygen is available.
No comments yet. Be the first to start the discussion!