I did the following questions, but I'm not sure of my answers, so I wanna see your answers:
1. Which of the following processes, taking place during photosynthesis, returns chlorophyll molecules to their reduced state?
a) formation of ATP
b) photolysis of water
c) excitation of photosystem
d) oxidation of NADPH
2.The function of the companion cell in the mature phloem tissue is that it
a) provides structural support for the sieve tubes
b) actively moves sucrose out of neighbouring photosynthesizing cells to the sieve tubes
c) moves sucrose against a concentration gradient into the xylem
d) contains a nucleus needed for cell division of the sieve tube elements
3. Fat accumulates in the liver when alcohol is consumed regularly because
a) liver cells use alcohol as an energy source instead of fat
b) fat absorbs alcohol and helps to detoxify it
c) alcohol is used to synthesize fat molecules in the liver
d) alcohol prevents the liver cells from secreting fat molecules
1. Which of the following processes, taking place during photosynthesis, returns chlorophyll molecules to their reduced state?
a) formation of ATP
b) photolysis of water
c) excitation of photosystem
d) oxidation of NADPH
2.The function of the companion cell in the mature phloem tissue is that it
a) provides structural support for the sieve tubes
b) actively moves sucrose out of neighbouring photosynthesizing cells to the sieve tubes
c) moves sucrose against a concentration gradient into the xylem
d) contains a nucleus needed for cell division of the sieve tube elements
3. Fat accumulates in the liver when alcohol is consumed regularly because
a) liver cells use alcohol as an energy source instead of fat
b) fat absorbs alcohol and helps to detoxify it
c) alcohol is used to synthesize fat molecules in the liver
d) alcohol prevents the liver cells from secreting fat molecules