Cell membrane

Question 1

Lysosomes:

Answer 1

waste and recycling plant of the cell destroyer of invading disease-causing cells

Question 2

Chloroplasts:

Answer 2

trap the sun’s energy for the biosphere only found in plant cells

Question 3

Centrioles:

Answer 3

crucial for cell division and only found in animal cells

Question 4

Endoplasmic reticulum:

Answer 4

high-way transport system for the cell

Question 5

rough er:

Answer 5

rough because of ribosomes attached

Question 6

smooth er:

Answer 6

lacks ribosomes

Question 7

vacuoles:

Answer 7

warehouses of the cell factory receive store and release necessary materials

Question 8

mitochondria:

Answer 8

powerhouse of the cell, converts glucose to usable energy for the cell, found in every cell in large numbers

Question 9

cell organelles:

Answer 9

work together to make the cell work

Question 10

Cell membrane:

Answer 10

Responsible for movement of material in and out of the cell.

Question 11

Cell membrane:

Answer 11

Separates cell contents from the outside environment

Question 12

Cell wall:

Answer 12

A strong wall outside the cell membrane also provides support for the plant cells because they have no skeleton

Question 13

Nucleus:

Answer 13

Directs any activities of the cell and contains genetic material (DNA)

Question 14

Cytoplasm:

Answer 14

Jelly-like substance that supports organelles inside the cell

Question 15

Cytoskeleton:

Answer 15

Networks of protein fibers that support cell shape, anchor of organelles, and provide transport paths between the organelles

Question 16

Ribosomes:

Answer 16

Site of protein synthesis, assembled in the nucleolus of a cell

Question 17

Golgi apparatus:

Answer 17

The packing plant

Question 18

3 functions of a cell membrane:

Answer 18

1. Cell barrier: keeps baddies out and keeps organelles in
2. Organization: membranes surround and package materials in vesicles

• membranes organize complex reactions like photosynthesis and cellular respiration

3. Selective filters: are Semi-permeable and only allow certain substances in or out

• regulated by particle size and by selective transport by membrane proteins

Question 19

Fluid mosaic model:

Answer 19

cell membranes are constantly moving and changing, changing the positions of the proteins lipids, and carbohydrates embedded in the membrane changing the mosaic to meet changing needs

Question 20

Carbohydrate chain:

Answer 20

for cell-to-cell communication

Question 21

Cholesterol:

Answer 21

maintains proper membrane flexibility, and is crucial for cell signaling and nerve conduction

Question 22

where are membrane proteins located?

Answer 22

can be peripheral (on the surface) or integral (spans the membrane)

Question 23

Why are proteins crucial?

Answer 23

for transport of substances in and out of the cell