Question

question 14 (1 point)
the following molecules form during the stages of glycolysis:

1. pyruvate
2. nadh
3. fructose - 1,6 biphosphate
4. glyceraldehyde - 3 - phosphate (g3p)
5. phosphoenol - pyruvate (pep)

in which order do they form?
3, 2, 5, 4, 1
1, 2, 3, 4, 5
5, 4, 3, 2, 1
3, 4, 2, 5, 1
question 15 (1 point)
which kind of pathway describes glycolysis best?
catabolic and synthetic
glycolytic and aerobic
aerobic and catabolic
anaerobic and catabolic

Explanation:

Step1: Recall glycolysis steps

Glycolysis starts with glucose being converted to Fructose - 1,6 - biphosphate. Then Fructose - 1,6 - biphosphate is split into two three - carbon molecules, one of which is glyceraldehyde - 3 - phosphate (G3P). During the oxidation of G3P, NADH is formed. Then G3P is further processed to phosphoenol - pyruvate (PEP), and finally PEP is converted to pyruvate.

Step2: Match with options

Based on the above sequence, the correct order of molecule formation is Fructose - 1,6 - biphosphate (3), glyceraldehyde - 3 - phosphate (4), NADH (2), phosphoenol - pyruvate (5), pyruvate (1), which corresponds to option 3, 4, 2, 5, 1.

Step3: Recall glycolysis pathway nature

Glycolysis is a catabolic pathway as it breaks down glucose into smaller molecules. It can occur in both aerobic and anaerobic conditions, but it is an anaerobic process at its core as it does not require oxygen to proceed. So the best description for glycolysis is anaerobic and catabolic.

Answer:

Question 14: D. 3, 4, 2, 5, 1
Question 15: E. anaerobic and catabolic