Unit 3 - Cell Review

Question 1

What are the simplest units of all living matter?

Answer 1

Cells

Question 2

There are @ 200 different types _______ in the human body

Answer 2

Cells (# of types)

Question 3

Cells that are 7.5 um in diameter

Answer 3

Red Blood Cell (size)

Question 4

Cells that are 100 um in diameter

Answer 4

Human ovum (size)

Question 5

1 of 3 Basic structures of a cell

Answer 5

Cell membrane

Question 6

2 of 3 Basic structures of a cell

Answer 6

Nucleus

Question 7

3 of 3 Basic structures of a cell

Answer 7

Cytoplasm

Question 8

Substructure of Cytoplasm

Answer 8

Cytosol

Question 9

1/3 Key structures of a cell membrane

Answer 9

Phospolipids

Question 10

2/3 Key structures of a cell membrane

Answer 10

Cholesterol

Question 11

3/3 Key structures of a cell membrane

Answer 11

Proteins

Question 12

Regulates the passage of substances into & out of cell

Answer 12

Cell Membrane

Question 13

3 Characteristics of Cell Membrane

Answer 13

1. Positioned in a double layer 2. Form the bulk of membrane 3. Not stationary

Question 14

The end of a phospholipid that is “water loving”

Answer 14

Phospholipid Head

Question 15

The end of a phospholipid that is “water-fearing”

Answer 15

Phospholipid Tail

Question 16

Stiffens & strengthens the plasma membrane

Answer 16

Cholesterol Molecules

Question 17

3 Types of Proteins in membranes

Answer 17

1. Channel 2. Receptors 3. Marker

Question 18

Cells with no nucleus

Answer 18

Red blood cells

Question 19

Surrounds the nucleus

Answer 19

Nucleus envelope

Question 20

Allows molecules to pass into & out of nucleus

Answer 20

Nuclear pores

Question 21

Extends throughout nucleoplasma & Composed of strands of DNA & proteins

Answer 21

Chromatin (role)

Question 22

Fills cytoplasm/cystosol - has 5 Structures

Answer 22

Organelles

Question 23

A network of membranous canals & curving sacs throughout cytoplasm

Answer 23

Endoplasmic Reticulum (ER)

Question 24

Ribosomes dot surface - Site of protein synthesis

Answer 24

Rough ER

Question 25

No ribosomes - Synthesises certain lipids and carbs

Answer 25

Smooth ER

Question 26

Function: "Shipping & Receiving" - Receives proteins. Prepares & Packages for export

Answer 26

Golgi Apparatus (function)

Question 27

2 lie perpendicular outside molecules

Answer 27

Centrioles (how they lie)

Question 28

Microtubule (protein) bundles

Answer 28

Centrioles (made of)

Question 29

Play role in cell division

Answer 29

Centrioles (Function)

Question 30

Membranous vesciles formed from pinched-off pieces of Golgi Apparatus. Cellular "garbage disposal"

Answer 30

Lysosomes (location)

Question 31

Cellular "garbage disposal" - Contains enzymes to break down unused proteins

Answer 31

Lysosomes (function)

Question 32

Powerhouse of cell

Answer 32

Mitochondria

Question 33

Framework of the cell: 1.Determines shape 2.Strengthens cell 3.Allows cell to move

Answer 33

Cytoskeleton

Question 34

Cellular extensions that 1.Increase surface area, 2.Are folds of membranes 3.Found in cells charged with absorbing nutrients Ex.Intestines

Answer 34

Microvilli

Question 35

Cellular extensions that 1.Propels substance forward 2.Hair-like 3.Found where microbes & debris need to be removed. Ex.Lungs

Answer 35

Cilia