Lab 3: Cell Structure and Function

Question 1

What is the function of the rough ER

Answer 1

process proteins or protein synthesis

Question 2

Which organelle carries on intracellular digestion?

Answer 2

Lysosomes

Question 3

What type of molecules can pass in and out of the cell?

Answer 3

small, uncharged substances.

Question 4

is 10% NaCL hypertonic, isotonic, or hypotonic to red blood cells?

Answer 4

Hypertonic

Question 5

In which direction does water move when cells are places in a hypertonic solution>

Answer 5

Out of the cell and into the solution.

Question 6

What do unfavorable environment conditions do to the speed of an enzyme reaction?

Answer 6

slows down the reaction

Question 7

An unfavorable pH causes an enzyme to lose its normal:

Answer 7

shape

Question 8

Which molecule would not diffuse across the membrane from the bag to the beaker and why?

Answer 8

starch because it has a higher concentration so it stays in place.

Question 9

the tonicity’s NaCl levels:

Answer 9

Hypotonic: less than 0.9 NaCl.
Hypertonic: more than 0.9% NaCl.
Isotonic: has 0.9% NaCl.

Question 10

What does catalase do in cells?

Answer 10

speeds the breakdown of the toxic chemical hydrogen peroxide to water and oxygenspe