Question

What is the critical difference between passive and active transport?

A. passive requires energy but active does not

B. passive requires no energy, but active does

C. passive and active each require energy, but passive requires less

What is an enzyme?

A. a protein that facilitates a reaction

B. a protein that supplies water for hydrolysis reactions

C. a protein that absorbs water during dehydration reactions

The First Law of Thermodynamics states:

A. energy can be changed from one form to another, but cannot be created or destroyed

B. energy is constantly being created by entropy events

C. energy can be used and then destroyed because of entropy's actions on it

D. energy can be destroyed while it is producing entropy

Chemical reactions that release energy are

A. exergonic

B. endergonic

C. catalysis

D. catalytic

The main product of photosynthesis is

A. glucose

B. oxygen

C. carbon dioxide

D. chlorophyll

E. sunlight

The main reason that cellular respiration needs to occur step by step instead of a single, big reaction is

A. cells don't store enough oxygen

B. cells don't have many mitochondria.

C. too much energy would be released for the cell to harness

D. cells produce the enzymes needed for cellular respiration very slowly

When ATP powers a reaction it becomes ADP. The ADP

A. can reform ATP by an exergonic reaction

B. is a waste product for lysosomal breakdown

C. can reform ATP by an equilibrium reaction

D. can reform ATP by an oxidation reaction

E. can reform ATP by an endergonic reaction

A cell produces 36 ATPs per glucose, however, if you calculated the total energy in a glucose molecule, 90 ATPs should be generated. Why is this so?

A. Some of the energy is destroyed

B. Some of the energy is used to do work in the cell

C. Some energy is lost as heat

Answer 1

1)B) passive does not require energy, but active does

Because in active transport molecule moves in opposite direction from low to high so it requires energy.

2)A) a protein that facilitates reaction.

Because enzyme is a biocatalyst which increase or decrease the rate of reaction.

3)A) energy can be changed from one form to another but

Cannot be created or destroyed.

4)A) exergonic

In these chemical reaction energy is released during bond formation in product formation.

5)A) glucose

Because it is the main product to run the whole process and for the energy.

6)c)too much energy would be released for the cell to harness

Because energy will be released slowly in series of steps, if these series of reactions occur at once then too much energy will be released at once.

7)A) can reform ATP by exergonic reaction.

Because energy is released during formation of ATP

8)B) some of the energy is used to do work in the cell.

Because energy will be used to carry some molecules and transferring process of glucose units.