Cells and Microbes

Question 1

What does MRS GREN stand for

Answer 1

Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition

Question 2

Movement

Answer 2

Changing your position in response to your surroundings (i.e to escape from danger)

Question 3

Respiration

Answer 3

Releasing energy from stored chemicals- we need this energy to survive and to carry out other essential needs (Respiration is NOT breathing, though breathing in oxygen is needed for respiration)

Question 4

Sensitivity

Answer 4

Detect information about our surroundings using the five senses (touch, taste, sight, smell and hear) so our bodies can act accordingly

Question 5

Growth

Answer 5

Our bodies develop , growing larger and stronger to survive. Animals usually stop growing at one point but plants can go on forever.

Question 6

Reproduction

Answer 6

Ability to create offspring to replace those who died

Question 7

Excretion

Answer 7

Removing waste products from the body

Question 8

Nutrition

Answer 8

Feeding on food to gain energy needed for processes and nutrients needed for good health

Question 9

What are all living cells made up of?

Answer 9

Microscopic cells

Question 10

Tissue

Answer 10

A number of identical cells working together

Question 11

What are a number/group of tissues called?

Answer 11

An organ

Question 12

What are a number of organs working together called?

Answer 12

Organ systems

Question 13

Nucleus

Answer 13

Contains DNA , controls cell’s function

Question 14

Mitochrondrion

Answer 14

Respiration takes place, releasing energy

Question 15

Cell membrane

Answer 15

Controls the exit and entering of substances

Question 16

Cytoplasm

Answer 16

Gel-like substance, most chemical reactions happen here

Question 17

Chloroplast

Answer 17

(PLANT) Contains chlorophyll, traps light required for photosynthesis

Question 18

Vacuole

Answer 18

(PLANT) Contains a solution of water, sugars and salts

Question 19

Cell wall

Answer 19

(PLANT) Made of cellulose, provides support and structure to the cell

Question 20

Flagella

Answer 20

Some bacteria have it, small hairs, helps them move and reproduce quickly

Question 21

Are bacteria single-celled or multi-cellular?

Answer 21

Single-celled

Question 22

Specialised Cells

Answer 22

Cells that have different features or shapes to perform a specific function effectively

Question 23

Ciliated cell

Answer 23

Found in the respiratory tract, clears harmful material (mucus + hair) , moves mucus by using cilia (small hairs)

Question 24

Red Blood Cell

Answer 24

Found in the blood, carried oxygen and carbon dioxide, lacks nucleus

Question 25

White Blood Cell

Answer 25

Found in the blood and lymph tissue, fights infection, very flexible

Question 26

Sperm cell

Answer 26

Found in the seminiferous tubules within each testicle, fertilise egg cells, uses tail and flagella (tiny hairs) to move/swim

Question 27

Egg cell (Ovum)

Answer 27

Found in the fallopian tube and ovaries, creates new individuals

Question 28

Palisade cell

Answer 28

(PLANT) Found in the leaf, photosynthesis, contains majority of the chloroplasts

Question 29

Guard cell

Answer 29

(PLANT)Found in the leaf epidermis , regulated the rate of transpiration by opening and closing the stomata, swells and loses water

Question 30

Root Hair cell

Answer 30

Found in the roots, absorbs the water from the soil, large surface area absorbs minerals

Question 31

What is a petri dish coated with?

Answer 31

Agar

Question 32

What is agar?

Answer 32

It's a gel-like substance, that contains nutrients to help microbes to grow

Question 33

What does the lid on the petri dish prevent?

Answer 33

Unwanted microbes landing on the agar and contaminating the culture

Question 34

Where will the plate be stored in?

Answer 34

Incubator (at a constant temp. for the microbe's reproduction)

Question 35

What do the microbes need to form a colony?

Answer 35

Food, oxygen and warmth