Lab 1

Question 1

Prokaryotic cells

Answer 1

Lack membrane-bound organelles

Question 2

Organelles

Answer 2

Nucleus, mitochrondrian, chloroplast, etc

Question 3

Protoplasm

Answer 3

Colloidal suspension of mostly protein in a watery solution contained within the cell wall

Question 4

T/F: the plant cell wall is always outside the cell membrane or plasma membrane

Answer 4

True

Question 5

Cytoplasm

Answer 5

Material within a cell wall except the nucleus

Question 6

Largest organelle in cytoplasm

Answer 6

Nucleus

Question 7

Location of pigments (other than chlorophyll)

Answer 7

Chromoplast

Question 8

Leucoplast

Answer 8

Colorless plastid - amyloplast or elaioplast

Question 9

Amyloplast

Answer 9

Leucoplast containing mainly STARCH

Question 10

Elaioplast

Answer 10

Leucoplast containing mainly OILS OR FATS

Question 11

Circulation around the central vacuole

Answer 11

Cytoplasmic streaming or cyclosis

Question 12

Chloroplasts

Answer 12

Contain chlorophyll

Question 13

Diffusion

Answer 13

Movement of substances from areas of higher concentration to areas of lower concentration

Question 14

Osmosis

Answer 14

Water moves toward the higher concentration

Question 15

What happens if a plant cell is subjected to a higher solute concentration for the outside of the cell membrane?

Answer 15

Plasmolysis

Question 16

What is the result of plasmolysis?

Answer 16

Reduced turgor pressure due to the net movement of water across the cell membrane to the outside of the cell

Question 17

What is the difference between the protoplasm and cytoplasm of a cell?

Answer 17

Protoplasm includes everything inside the cell wall of a plant cell. Cytoplasm includes everything inside the cell except the nucleus.

Question 18

Compare the function of a plant cell wall to the plant cell or plasma membrane.

Answer 18

Plants’ cell walls maintain the integrity of the cell, but does not prevent substances from moving across the plant. Cell membranes determine what can pass from inside and outside the cell.

Question 19

Can you locate the nucleus within a cell? How can you tell where the nucleus is located?

Answer 19

The cytoplasm along with the chloroplast will move around the nucleus.

Question 20

Is the process of plasmolysis reversible? How could you set up an experiment to demonstrate reversal of plasmolysis?

Answer 20

Yes; the plasma membrane allows substances to move in and out of the cell. You could rehydrate the cell and reverse plasmolysis.

Question 21

What is the evolutionary significance of pigment color for plant survival.

Answer 21

Attraction for pollinators, fruit for consumption, and to help spread seeds.

Question 22

How do amyloplast and elaioplasts differ? In what part of a plant would elaioplast commonly be found?

Answer 22

Amyloplast stores starches, while elaioplasts store oils. Elaioplasts are usually found in the seed.