Question

1. Fill in the following equation: ATP + __ ? ADP + __

Select one:
a. H2O, Pi
b. H2O + free energy, Pi
c. free energy, Pi + H2O
d. H2O, Pi + free energy
e. free energy, Pi

Question 2

A diploid organism has 8 chromosomes in G1. How many chromosomes will each of its offspring cells have after meiosis?

Select one:
a. 6
b. 2
c. 16
d. 4
e. 8

Question 3
Products of glycolysis include:

Select one:
a. pyruvate
b. ATP
c. NADH
d. all of the above

Answer 1

Ans 1 H₂O, Pi. ATP needs water in order to be broken down. ATP contains three phosphate groups, hence when broken down, it releases one phosphate group.

Ans 2. 8 chromosomes. At G1 phase, the ploidy of the cell is 2n. At G2 it becomes 4n, but that's not important here.

Important thing to note is that they have asked for the ploidy of the offspring's cells, not the ploidy of the gametes. since the ploidy at G1 is 2n which signifies 8 chromosomes, then that means the offspring will have the same ploidy of 2n i.e. 8 chromosomes.

If the question asked for the chromosomes in the gametic cells, then that would be 4. because the ploidy would be n.

Ans 3 all of the above.

Pyruvate is the end product of glycolysis.

ATP is formed in two reactions. i) conversion of 1,3-Bisphosphoglycerate to 3-phosphoglycerate.

ii) conversion of phosphoenol pyruvate to pyruvate

NADPH is formed when Glyceraldehyde-3-phosphate is converted to 1,3-Bisphosphoglycerate