Plz i am terribly behind and need to pass the class

1.

which of the following requires energy?

osmosis

cell pumps

diffusion

facilitated diffusion

2.

studying a picture of a cell taken with an electron microscope, you find that the cell has no nucleus and no mitochondria, but it does have a cell membrane and a cell wall. you conclude that the cell is probably from a(n)

animal.

now extinct organism.

prokaryote.

plant.

3.

in which of the following organelles is a cell’s energy (atp) produced?

endoplasmic reticulum

lysosome

mitochondria

golgi apparatus

4.

one difference between prokaryotes and eukaryotes is that

prokaryotes have no nucleus.

mitochondria are found in larger quantities in eukaryotes.

nucleic acids are found only in prokaryotes.

golgi vesicles are found only in prokaryotes.

5.

refer to the illustration above. the cell uses structure “3”

as a receptor.

to package proteins so they can be stored by the cell.

to produce energy.

to transport material from one part of the cell to the other.

6.

molecules that are too large to be moved through the membrane can be transported into the cell by

exocytosis.

diffusion.

membrane proteins

osmosis.

7.

the structure that controls what enters and leaves the cell is called

the nuclear membrane.

the cell wall.

the cell membrane.

the nucleus.

8.

molecules that supply energy for active transport are

potassium

atp

sodium

all of the above

9.

refer to the above illustration, which beaker shows a cell in an isotonic solution?

3

4

2

1

10.

during endocytosis, a pouch will separate from the cell membrane and move to the cytoplasm. the pouch becomes a structure called a

nucleus

vessle

vesicle

cytosol

11.

refer to the illustration above. the process shown is called

active transport.

osmosis.

facilitated diffusion.

diffusion.

12.

the process by which water passes into or out of a cell is called

selective transport.

osmosis.

solubility.

endocytosis.

13.

in facilitated diffusion, membrane proteins

transport molecules from an area of higher concentation to lower

do not need atp

transport molecules with the concentration gradient

all of the above

14.

when a human red blood cell is placed in a hyptonic environment (like distilled water), it will

do nothing

none of the above

swell

shrink

15.

all cells have

an internal fluid that gives shape to the cell and supports the other things within it.

all of the above

dna

a covering called a cell membrane that surrounds the cell and controls what information and materials enter and leave it.

16.

only eukaryotic cells have

dna.

ribosomes.

membrane-bound organelles.

cytoplasm.

17.

the cell membrane maintain homeostasis becuase it

is hypotonic

none of the above

is semipermeable