Chapter 3 Notes Part 3

Question 1

Centrosome structure

Answer 1

Nonmembranous structure

Question 2

Centrosome function

Answer 2

Distribute chromosomes to new cells during cell reproduction

Question 3

Vesicle structure

Answer 3

Membranous sacs that form from the cell membrane that surrounds particles and pinches off

Question 4

Vesicle function

Answer 4

Contains substances that enter cell

Question 5

Another word for vesicle

Answer 5

Vacuole

Question 6

Vacuoles are

Answer 6

Storage tanks

Question 7

Cilia and flagella structure

Answer 7

Motile projections attached beneath cell membrane

Question 8

Cilia and flagella function

Answer 8

Moving substances in one direction across cell surfaces

Question 9

Microfilaments and microtubules structure

Answer 9

Strands of protein acting as

Question 10

Microfilaments and microtubules function

Answer 10

Braces and strengthens the cells surface, provides support

Question 11

Control center

Answer 11

Cell nucleus

Question 12

Cell nucleus

Answer 12

Cellular organelle located near the center

Question 13

Cell nucleus enclosed in

Answer 13

Double bilayer called the nuclear envelope

Question 14

Nuclear envelope consists of

Answer 14

Inner and outer membranes that maintain the integrity of the nucleus

Question 15

Porous

Answer 15

Nuclear envelope

Question 16

Why is the nuclear membrane porous

Answer 16

To allow substances to move between the cytoplasm and the nucleus

Question 17

->->

Answer 17

Chromatin, chromosome, either side

Question 18

Nucleolus structure

Answer 18

Small dense body made of RNA and protein

Question 19

Nucleolus function

Answer 19

Help form ribosomes

Question 20

Chromatin structure

Answer 20

Fibers composed of protein and DNA molecules

Question 21

Chromatin function

Answer 21

Contain cellular information for making proteins needed in carrying on life processes (genetic material [RNA and DNA])

Question 22

Chromatin…

Answer 22

Codes for proteins

Question 23

Passive and active mechanisms

Answer 23

Movements through cell membranes include these

Question 24

Passive

Answer 24

No energy required

Question 25

Forms of passive transport

Answer 25

Diffusion facilitated diffusion osmosis and filtration

Question 26

Active

Answer 26

Requires cellular energy

Question 27

Active transport called

Answer 27

Active transport and endocytosis

Question 28

Ribosomes =

Answer 28

Rough endoplasmic reticulum

Question 29

No ribosomes =

Answer 29

Smooth endoplasmic reticulum

Question 30

Diffusion

Answer 30

Process by which molecules or ions become scattered or are spread from regions of higher concentrations to regions of lower concentrations

Question 31

Molecules move until

Answer 31

Equilibrium is obtained

Question 32

Passive mechanisms responsible for

Answer 32

Exchange of of oxygen and co2 between the air and the blood in the lungs and between the blood and the cells

Question 33

Facilitated diffusion

Answer 33

Special carrier molecules (usually proteins) move substances through the cell membrane from higher to lower regions of concentration

Question 34

Osmosis

Answer 34

When water molecules diffuse from a region of higher water concentration toward a region of lower water concentration through a selectively permeable membrane