Microbes

Question 1

Why does bacteria cause disease?

Answer 1

Some bacteria release toxins that are harmful to humans. Those toxins harm or prevent our body cells from working properly causing disease

Question 2

Are viruses alive?

Answer 2

No because they need a host cell to survive

Question 3

What does the plant cell have that the animal cell doesn’t have?

Answer 3

Cell wall, chloroplast and permanent vacuole

Question 4

Nucleus function

Answer 4

Controls cell, holds DNA

Question 5

Mitochondria function

Answer 5

Site of cellular respiration, turns glucose and oxygen into energy

Question 6

Cytoplasm function

Answer 6

Jelly like fluid in the cell, site of chemical reactions, organelles are contained

Question 7

Cell membrane function

Answer 7

Allows things to come in and out of the cell, transports waste out of the cell

Question 8

Cell wall function

Answer 8

A tough outer layer made of cellulose, supports the cell and helps the cell maintain its shape

Question 9

Vacuole function

Answer 9

Storage space for the cell

Question 10

Chloroplast function

Answer 10

Site of photosynthesis and gives the plant its green color(chlorophyll)

Question 11

What does each letter of MRS GREN stand for

Answer 11

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

Question 12

How much time does bacteria take to double?

Answer 12

20 minutes

Question 13

What are the ideal conditions for binary fission

Answer 13

A warm, moist, protein rich environment

Question 14

3 ways to reduce food poisoning

Answer 14

1. Cooking food properly (Check temperature)
2. Clean properly (Wash hands before handling raw meat etc.)
3. Store food at proper temperature (Don’t leave food out)

Question 15

What is the definition of bacteria and virus

Answer 15

Bacteria are single celled organisms (unicellular), and they are alive
A virus is a non-living particle made up of genetic material and protein that can invade cells

Question 16

How do viruses harm people

Answer 16

Viruses harm people by invading a healthy cell in the body and cloning itself which harms more cells and becomes a disease

Question 17

Immunity definition

Answer 17

The ability for our body to recognize and get rid of foreign material (It does this by producing antibodies to a specific pathogen)

Question 18

Antibodies definition and what it is used for

Answer 18

Antibodies are a protein made by plasma cells (type of white blood cells) in response to an antigen.
They are used for protecting you from infections, allergens and toxins

Question 19

What are the 2 ways we can gain immunity

Answer 19

1. Passive immunity- antibodies are produced outside the body and given to us
2. Adaptive immunity- Body makes its own antibodies

Question 20

Vaccine definition

Answer 20

A preparation used to stimulate the bodys response against diseases

Question 21

Aim of vaccines

Answer 21

To stimulate a dangerous disease so that the body learns how to fight it and when that disease actually comes the body knows what to do