Question

1. a nutrition label shows that one slice of cake has 450 calories. when the sugars and fats in the cake, the energy is released to make atp. what does the term calorie measure here?

a) energy stored in atp molecules
b) energy needed to raise 1 gram of water by 1°c
c) energy released directly during glycolysis
d) energy produced only when oxygen is present

1. which process produces a net gain of 2 atp molecules by splitting glucose into pyruvate?

a) fermentation
b) glycolysis
c) krebs cycle
d) aerobic respiration

1. which of the following is true about aerobic respiration?

a) it takes place in the cytoplasm and does not require oxygen.
b) it requires oxygen and produces more atp than anaerobic processes.
c) it only occurs in plant cells during photosynthesis.
d) it is another term for fermentation.

Explanation:

For question 5, a calorie on a nutrition label measures the amount of energy in food. One calorie is the energy needed to raise 1 gram of water by 1°C. For question 6, glycolysis splits glucose into pyruvate and produces a net gain of 2 ATP molecules. For question 7, aerobic respiration requires oxygen and produces more ATP than anaerobic processes. It occurs in the mitochondria, not the cytoplasm, and is not the same as fermentation.

Answer:

1. b) Energy needed to raise 1 gram of water by 1°C
2. b) Glycolysis
3. b) It requires oxygen and produces more ATP than anaerobic processes