During cellular respiration, the covalent bonds of a molecule are broken down to make products. Which molecule is broken down?(1 point)
Responses
sugar
sugar
ADP
ADP
carbon dioxide
carbon dioxide
water
sugar
The molecule that is broken down during cellular respiration is sugar.
During cellular respiration, the molecule that is broken down to make products is sugar. To arrive at this answer, we can recall the process of cellular respiration. Cellular respiration is the process by which cells generate energy from glucose molecules. Glucose is a type of sugar. In cellular respiration, glucose is broken down in a series of enzymatic reactions to release energy in the form of ATP (adenosine triphosphate), while producing carbon dioxide and water as byproducts. Hence, the correct answer is "sugar."
During cellular respiration, four total ATP are produced when pyruvic acid is created. What else is produced as a result of this reaction?(1 point)
Responses
oxygen
oxygen
sugar
sugar
water
water
heat
During cellular respiration, in the process where pyruvic acid is created, the other product produced is ATP, not heat. Hence, the correct answer is "ATP."
Why does hydrogen bond so tightly to oxygen during cellular respiration?(1 point)
Responses
It is electronegative, but oxygen is not.
It is electronegative, but oxygen is not.
It is less electronegative than oxygen.
It is less electronegative than oxygen.
It is more electronegative than oxygen.
It is more electronegative than oxygen.
It is not electronegative, but oxygen is.
Hydrogen bonds so tightly to oxygen during cellular respiration because it is more electronegative than oxygen.
Identify the byproduct of lactic acid fermentation.(1 point)
Responses
lactic acid
lactic acid
carbon dioxide
carbon dioxide
oxygen
oxygen
pyruvic acid
pyruvic acid
The byproduct of lactic acid fermentation is lactic acid.
When a reaction releases more energy than it uses, it is called(1 point)
Responses
emeritus
emeritus
catalyst
catalyst
lactic
lactic
exothermic