Exam 2

Question 1

Which of the following are the top 5 most abundant elements found in living organisms?

Answer 1

C, O, N, H, P

Question 2

Which of the following are NOT indicated to be essential for humans?

Answer 2

Au (Gold)

Question 3

A substance normally cannot cross the cell membrane. There concentration of this substance is 10 times higher in the outside of the cell. To import this substance from the outside of the cell to the inside, the cell would carry out:

Answer 3

Facilitated diffusion

Question 4

Fate of Plant Cell in Hypotonic solution

Answer 4

stays turgid

Question 5

Fate of plant cell in hypertonic solution

Answer 5

plasmolysed

Question 6

Fate of plant cell in isotonic solution

Answer 6

Flaccid( Not Normal)

Question 7

Fate of animal cell in hypotonic solution

Answer 7

bust/lyses

Question 8

Fate of animal cell in hypertonic solution

Answer 8

Becomes shriveled/shrunken

Question 9

Fate of animal cell in isotonic solution

Answer 9

stays normal

Question 10

The sodium potassium pumps:

Answer 10

continuously pumps 3 Na+ out and 2K+ in, powered by ATP

Question 11

Which of the following will be imported by receptor-mediated endocytosis by a cell?

Answer 11

LDL Vesicles in the blood

Question 12

The enzyme that can convert singlet oxygen to hydrogen peroxide is called:

Answer 12

Superoxide dismutase

Question 13

The enzyme that can breakdown hydrogen peroxide to water and oxygen gas is called:

Answer 13

Catalase

Question 14

obligate aerobe

Answer 14

oxygen is necessary for metabolism and growth