Cell

Question 1

What is the function of vacuoles

Answer 1

Storage of materials and water

Question 2

What is the function of the lysosomes

Answer 2

Contains hydrolytic enzymes for intracellular digestion and cell destruction (suicide bags)

Question 3

What is the function of the nucleus

Answer 3

Control center of the cell - controls metabolic functioning of cell and determines cell characteristics

Contains chromatins - DNA & RNA

Question 4

What is the function of the cell membrane

Answer 4

To protect the cell

Question 5

Why is a cell membrane described as semipermeable

Answer 5

Only allows specific molecules to pass through

Question 6

What is the function of the mitochondria

Answer 6

Power house of the cell

Site of many chemical reactions involved of energy (ATP) production

Question 7

What is the function of SER

Answer 7

Where steroid hormones and some carbohydrates are synthesized

Question 8

Function of the RER

Answer 8

Where protein folding occurs

Question 9

Function of the golgi

Answer 9

Repackaging center, stores, modifies and packages proteins for export out of the cell

Question 10

Where are lysosomes made

Answer 10

Type of vesicle made at golgi

Question 11

What is the function of lysosomes

Answer 11

Suicide bags - release enzymes to destroy cell

Attach to vacuoles and release hydrolysis enzymes to digest contents of vacuole

Question 12

Function of vacuole

Answer 12

Storage cite

Question 13

Vesicles functions

Answer 13

Transport vesicles: transport polypeptides from ER to Golgi

Secretory vesicles: transport product to cell membrane from the Golgi for secretion out of the cell (exocytosis)

Question 14

Flagella function

Answer 14

A whip like tail used for motility
Ex. Human sperm

Question 15

Cilia function

Answer 15

Used mainly as sweepers in the human body

Found in the trachea and bronchi and fallopian tubes

Question 16

How do u increase the surface area to volume ratio in the cell

Answer 16

By folding

Question 17

Diffusion

Answer 17

The movement of molecules from and area of high to low concentration until the molecules are equally distributed

Question 18

Osmosis

Answer 18

The movement of water molecules from and area of high to low concentration across a differently permeable membrane

Question 19

How to increase the rate of diffusion

Answer 19

Increase temperature
Smaller molecules
Increase the concentration gradient

Question 20

Osmotic pressure

Answer 20

Pressure generated by osmotic flow of water

Question 21

Tonicity

Answer 21

Refers to the concentration of solutes in a solution

Question 22

Hypertonic

Answer 22

Has a greater concentration of solute and lesser concentration of solvent

Question 23

Hypotonic

Answer 23

A solution that has a lesser concentration of solute and greater concentration of solvent

Question 24

Isotonic

Answer 24

Concentration of solute is the same in 2 or more solutions

Question 25

Lysis

Answer 25

Swelling of cell

Question 26

Crenated

Answer 26

Shrivelling of cell

Question 27

Active transport

Answer 27

Energy required May move substances against concentration gradient

Question 28

Endocytosis

Answer 28

Brings substance into the cell, uses cell membrane to form vesicle, requires ATP

Question 29

Exocytosis

Answer 29

Substance secreted from cell when vesicle fuses with inner side of cell membrane Requires ATP

Question 30

What are the two types of endocytosis

Answer 30

Phagocytosis - cell eating Pinocytosis - cell drinking

Question 31

Function of the nucleolus

Answer 31

Where rRNA is produced

Question 32

Chromatins

Answer 32

The genetic material of the cell Made of DNA and proteins

Question 33

Glycolipids

Answer 33

Carbohydrates attached to phospholipids

Question 34

Glycoproteins

Answer 34

Carbohydrates attached to embedded protein

Question 35

Cholesterol

Answer 35

Helps maintain structure and fluidity of membrane

Question 36

Ribosomes function

Answer 36

Produce proteins Attached - for export outside the cell Free- to be used inside the cell