Quiz 3

Question 1

What are all cells surrounded by?

Answer 1

Membrane

Question 2

What is a spectrophotometer used for?

Answer 2

Measure absorbance of light as it passes through a solution

Question 3

How does a pH outside of a cell optimal pH range affect it’s membrane

Answer 3

It damages the membrane, changes permeability

Question 4

Do large animals or small animals lose body heat faster?

Answer 4

Smaller because they have less internal volume and less SA/V

Question 5

Chloroplast

Answer 5

captures light energy and converts it to food (sugar). (Site of photosynthesis)

Question 6

Chlorophyll

Answer 6

Green pigment, gives color to plants, and is responsible for the absorption of light to provide energy for photosynthesis

Question 7

Stomata

Answer 7

Stomata are cell structures in the epidermis of tree leaves and needles that are involved in the exchange of carbon dioxide and water between plants and the atmosphere. (Pores that can open or close)