Question

Question
Why does hydrogen bond so tightly to oxygen during cellular respiration?(1 point)
Responses

It is less electronegative than oxygen.
It is less electronegative than oxygen.

It is not electronegative, but oxygen is.
It is not electronegative, but oxygen is.

It is electronegative, but oxygen is not.
It is electronegative, but oxygen is not.

It is more electronegative than oxygen.

Answer 1

The correct response is: **It is not electronegative, but oxygen is.**

In cellular respiration, the hydrogen atoms bond to oxygen due to oxygen's high electronegativity, which allows it to attract electrons more strongly than hydrogen. This difference in electronegativity facilitates the formation of hydrogen bonds.

Answer 2

Identify the byproduct of lactic acid fermentation.(1 point)
Responses

pyruvic acid
pyruvic acid

oxygen
oxygen

lactic acid
lactic acid

carbon dioxide
carbon dioxide

Answer 3

The correct response is: **lactic acid.**

Lactic acid fermentation produces lactic acid as the main byproduct.

Answer 4

When a reaction releases more energy than it uses, it is called(1 point)
Responses

catalyst
catalyst

emeritus
emeritus

exothermic
exothermic

lactic

Answer 5

The correct response is: **exothermic.**

An exothermic reaction is one that releases more energy than it consumes.