Question

Please answer all questions, will rate for good thorough answers

Q1. Why areas, where photosystems are found, are less fluid than areas without photosystems in the thylakoid membrane? How such a structure will benefit the chloroplasts and cell.

Q2. Despite the chemical reactions of CAM and C4 Carbon fixation are similar, however, ______ is different.

a. the environment in which the plant lives

b. the time of the 24-hour day in which it occurs

c. whether it occurs inside or outside of a cell

d. all of these are correct

e. none of these is correct

Q3. All the chemicals produced in the Calvin cycle are almost used entirely within a plant, however the make divergent point to EITHER make more RUBP OR to make sugar is at the molecule

a. 1,3 bisphosphoglycerate

b. Glyceralde 3-phosphate

c. Ribulose bisphosphate

d. 3-phosphoglycerate

e. RUBISCO

Answer 1

1. Membrane fluidity is an important aspect of cell function. Thylakoid membranes contain electron transport carriers. For the production of ATP, a proton gradient across the membrane must be established. For the proton gradient to be established, the membrane must be less fluid so that protons do not leak through the membrane.

2. Option D is correct
C4 plants live in mesophytic conditions. CAM plants are xerophytic.
In C4 plants, primary carboxylation occurs in mesophyll cells. Secondary carboxylation occurs in bundle sheath cells.
In CAM plants, primary carboxylation occurs during night time. Secondary carboxylation occurs during day time.
(Actually options a and b are correct. Option C is not an exact answer)

3. Option B is correct
6CO2 + 6RUBP -----> 12 3-phosphoglyceric acid
12 3-phosphoglyceric acid + 12 ATP ----> 12 1, 3-bisphosphoglyceric acid
12 1, 3-bisphosphoglyceric acid + 12 NADPH -----> 12 Glyceraldehyde-3-phosphate

Out of 12 Glyceraldehyde-3-phosphate molecules, two molecules are used for glucose production. Ten molecules are used for the regeneration of RuBP.