Class Test 1

Question 1

Respiration of Prokaryotes

Answer 1

Aerobic and Anaerobic

Question 2

What is the cell wall is made of ?

Answer 2

Murein (peptidoglycan)

Question 3

What is the difference between the cytoplasm and the cytosol ?

Answer 3

Cytoplasm is the jelly like substance containing all the contents inside the cell membrane , except for the nucleus. The cytosol is the intracellular fluid not including the cell’s contents

Question 4

S number of Ribosome

Answer 4

70 S

Question 5

Role of the capsule

Answer 5

Slime layer, stops bacteria from drying out, prevents viral infections and is useful for adhesion

Question 6

What are plasmids ?

Answer 6

Small circular loops of DNA

Question 7

Flagella made of

Answer 7

Protein fibers called flagellin

Question 8

T/F: Does pili help with cell conjugation (exchange of plasmids)

Answer 8

True

Question 9

DNA is known as

Answer 9

Blue print of life

Question 10

Why is the cell membrane called the Fluid Mosaic Model ?

Answer 10

Fluid because individual phospholipids and proteins can move side to side within the layer as if it’s a liquid.

Mosaic because of the pattern the protein molecules produce when the membrane is viewed from above.

Question 11

Polar heads are made of ? Nonpolar tails are made of ?

Answer 11

1) PO4 group + glycerol
2) Fatty acid

Question 12

What does the fluid mosaic model describe or illustrate ?

Answer 12

It describes the cell membrane as a tapestry of several types of molecules that are constantly moving.

Question 13

What is the ratio between the solute and the solvent in a hypertonic solution ?

Answer 13

solute > solvent

Question 14

What does plasmolysis lead to ?

Answer 14

Flaccidity

Question 15

Cytolysis is a result of

Answer 15

Hypotonic solution

Question 16

The steeper the concentration gradient the ______ the rate of diffusion.

Answer 16

faster

Question 17

What is the shape of an isotonic cell ?

Answer 17

Biconcave disk

Question 18

Osmosis is the diffusion of____.

Answer 18

water

Question 19

Pores used in osmosis

Answer 19

Aquaporins

Question 20

Microfilaments are made up of _____ protein . Microtubules are made up of _____ protein.

Answer 20

1) Actin
2) Tubulin

Question 21

T/F: The two types of microfilaments are actin and cordial.

Answer 21

False. Actin and Intermediate

Question 22

Microtubules make up:

Answer 22

cilia , flagella , spindle fibers

Question 23

An example of where microfilaments are:

Answer 23

Skeletal Muscle

Question 24

Another name for the Golgi apparatus is :

Answer 24

“Delivery System of the Cell”

Question 25

What does the CIS face do ? What does the TRANS face do ? (Golgi Apparatus)

Answer 25

CIS: Receives TRANS: Delivers

Question 26

What are the two types of transfer proteins ?

Answer 26

Channel and Carrier

Question 27

Most common form of Endocytosis:

Answer 27

Pinocytosis

Question 28

What are two organelles that have their own DNA ?

Answer 28

Mitochondria and Chloroplasts

Question 29

Site of protein synthesis is

Answer 29

Rough ER

Question 30

T/F: Active transport moves molecules along(down) the concentration gradient

Answer 30

False. Against the concentration gradient.

Question 31

Phagocytosis is a)cell drinking b)cell eating

Answer 31

B) cell eating

Question 32

What is the action potential of the sodium-potassium pump ?

Answer 32

+35

Question 33

Give 2 examples of molecules that are transported by Receptor-Mediated endocytosis.

Answer 33

Hormones, cholesterol, ligase, legumes

Question 34

What kind of energy does Simple Diffusion use ?

Answer 34

Natural Kinetic Energy

Question 35

What are the 2 types of proteins ?

Answer 35

Peripheral and Integral.

Question 36

How does cholesterol benefit the cell ?

Answer 36

Cholesterol is a type of steroid. It maintains the stability of the cell membrane and helps in regulating molecules entering and exiting the cell.

Question 37

Hoes do carbohydrates benefit the cell ?

Answer 37

It is a major recognition site and attaching site for pathogens.

Question 38

What material can easily pass through the plasma membrane ?

Answer 38

Lipids

Question 39

What is the site for cellular respiration ?

Answer 39

Mitochondria

Question 40

T/F: The chloroplast, mitochondria, ribosome, and nucleus all have a double membrane.

Answer 40

False. The ribosome is NOT membrane bound.

Question 41

T/F: The nucleolus is non dividing.

Answer 41

True

Question 42

T/F:A prokaryotic cell has 4 chromosomes.

Answer 42

False. It has one strand of DNA called **"naked DNA"** because it is free in the cytoplasm.

Question 43

T/F: The human liver cells produce a large amount of protein.

Answer 43

True

Question 44

What are the 2 types of ribosomes ?

Answer 44

Free ribosome and Bound ribosome.

Question 45

The eukaryotic cell is how many svedberg unit (S) ?

Answer 45

80

Question 46

How does the mitochondria get its DNA ?

Answer 46

It's maternary (from your mom) inherited

Question 47

What are the enzymes found in lysosomes ?

Answer 47

Hydrolytic enzymes

Question 48

T/F: The nucleus , Mitochondria, and plasmids have their own DNA.

Answer 48

True

Question 49

What makes meat feel slimy ?

Answer 49

Glycocalyx

Question 50

Turgid cell membrane

Answer 50

Hypotonic

Question 51

Flaccid cell

Answer 51

Hypertonic

Question 52

Interlocking plasma membrane cells bind cells through_______.

Answer 52

Junctions (cell talking)

Question 53

The 7 functions of the plasma membrane are:

Answer 53

1)Protective barrier 2)Regulate transport in & out of cell (selectively permeable) 3) Allow cell recognition 4) Provide anchoring sites for filaments of cytoskeleton 5) Provide a binding site for enzymes 6) Interlocking surfaces bind cells together (junctions) 7)Contains the cytoplasm (fluid in cell)