Life

Question 1

What are the criteria for life?

Answer 1

M-Movement
R-Respiration
S-Sensitivity
G-Growth
R-Reproduction
E-Excretion
N-Nutrition
C-Control

Question 2

Unicellular organism

Answer 2

An organism with one cell

Question 3

Multicellular organism

Answer 3

An organism with multiple cells

Question 4

What is the formula for magnification?

Answer 4

size of image/ size of object

Question 5

What is the formula for the size of an object?

Answer 5

size of image/ magnification

Question 6

Resolution

Answer 6

A measure of the clarity of an image

Question 7

Magnification

Answer 7

How large the image of an object can be made in relation to the actual size of the object

Question 8

DNA

Answer 8

Exists as a large, circular chromosome and controls the cell’s activities

Question 9

Plasmid

Answer 9

Small circles of DNA that contains additional genes (not in all bacteria)

Question 10

Ribosomes

Answer 10

Make proteins out of amino acids

Question 11

Cytoplasm

Answer 11

Where metabolic reactions occur

Question 12

Cell membrane

Answer 12

Controls what enters and exits the cell

Question 13

Slime capsule

Answer 13

Protects cell from digestion by other organisms

Question 14

Pili

Answer 14

Used to attach to each other and the environment

Question 15

Flagellum/a

Answer 15

Used for movement by swimming

Question 16

How permeable is the cell wall?

Answer 16

Fully permeable

Question 17

How permeable is the cell membrane?

Answer 17

Partially permeable

Question 18

Diffusion

Answer 18

The net movement of particles down their concentration gradient

Question 19

What is the formula for rate of diffusion?

Answer 19

Concentration gradient x Surface area/ diffusion distance

Question 20

What factors influence diffusion?

Answer 20

Concentration gradient, surface area, diffusion distance, tenperature

Question 21

What is a eukaryotic cell?

Answer 21

A cell with a nucleus and membrane-bound organelles

Question 22

What is a prokaryotic cell?

Answer 22

A cell without a nucleus

Question 23

Kilometre (km)

Answer 23

1 x 10 to the 3m

Question 24

Metre (m)

Answer 24

1 x 10-0m

Question 25

Centimetre (cm)

Answer 25

1 x 10-2m

Question 26

Millimetre (mm)

Answer 26

1 x 10-3m

Question 27

Micrometer (um)

Answer 27

1 x 10-6m

Question 28

Nanometre (nm)

Answer 28

1 x 10-9m

Question 29

Magnification equation

Answer 29

Size of image/ Size of object

Question 30

Which light microscope is 2D image?

Answer 30

Compound

Question 31

Which light microscope is 3D?

Answer 31

Dissecting

Question 32

Which electron microscope is 2D?

Answer 32

Transmission (TEM)

Question 33

Which electron microscope is 3D?

Answer 33

Scanning (SEM)

Question 34

What does DNA do?

Answer 34

It acts as the cell’s protein manufacturing instructions

Question 35

What does the nucleus do?

Answer 35

Control the cell’s activities

Question 36

What is differentiation?

Answer 36

The process of specialised cells switch on certain genes and making only the protein they need to become a certain type of cell

Question 37

Cell

Answer 37

The smallest unit of a living organism

Question 38

Tissue

Answer 38

A group of cells with a similar structure and function

Question 39

Organ

Answer 39

Made of more than one type of tissue which work together to perform a particular job

Question 40

System

Answer 40

Composed of a variety of different organs which work together to perform a particular function in the body