Question

Multiple Questions - Medal! - please help

Answer 1

Ribosomes are crucial proteins in cells because:
Select one:
a. they are responsible for providing protection from invaders.
b. they provide the structural components of all cells.

c. they only operate in eukaryotic cells.
d. they are the sites for protein synthesis.

Answer 2

@Mimi1212

Answer 3

d. they are the sites for protein synthesis

Answer 4

@Mimi1212 Andrea is viewing a plant cell with a compound microscope. She notices a large, "empty" structure. When Andrea adds salt water, the structure decreases in size. Andrea is observing _______________.
Select one:
a. a lysosome
b. a nucleus
c. a central vacuole
d. a peroxisome

Answer 5

I believe it is D

Answer 6

@Mimi1212 When comparing a sample of plant cells and a sample of animal cells under a compound microscope, a student notices that all of the plant cells are the same shape, whereas the animal cells have variable shapes. What explains this difference?
Select one:
a. The plant cells contain a rigid cell membrane.
b. The animals cells are dead, and have shriveled.
c. The animal cells lack cell walls.
d. The animal cell lacks a central vacuole.

Answer 7

c. The animal cells lack cell walls.