Bacteria

Question 1

How do bacteria survive and multiply
Bacteria need how many conditions to survive and multiply

Answer 1

Four

Question 2

What are the four conditions bacteria need to survive and multiply

Answer 2

Food, moisture, warmth and time

Question 3

Bacteria prefer to grow in food which is high in (3)
State examples of these types of foods

Answer 3

Protein, vitamins and minerals
Chicken, fish, milk, beef, pork, cheese and cream

Question 4

Why does bacteria need moisture (water)

Answer 4

To grow and therefore cannot multiply in dry foods

Question 5

What happens once dry food is reconstituted (water is added)

Answer 5

Then the food becomes an ideal breeding ground for bacteria

Question 6

Three examples of foods that are reconstituted before they are eaten

Answer 6

Custard powder
Packet soup
Pot noodle
Rice
Pasta
Cous Cous

Question 7

Why do bacteria like to be kept warm

Answer 7

They multiply most rapidly in warm conditions

Question 8

Bacteria is _________ between __ and 100°C

Answer 8

destroyed
64

Question 9

What is the DANGER ZONE

Answer 9

it’s when bacteria multiply rapidly between 5°C and 63°C

Question 10

Bacteria multiply_______ in the fridge at what temperature

Answer 10

Slowly
1-4 °C

Question 11

Bacteria are ________ in the freezer ( still alive ) at what temperature

Answer 11

Dormant
-18°C

Question 12

Definition of the term dormant

Answer 12

Dormant means inactive. The bacteria are alive, but not actively growing or multiplying

Question 13

Tell me about the time if bacteria are given ‘ideal conditions’ I.e. food, moisture and warmth

Answer 13

They have enough time they will multiply rapidly
In fact each bacterium can divide into two once every twenty minutes in ideal conditions

Question 14

If piece of cooked chicken is infected with 100 bacteria and is left to sit in a warm room how many bacteria will be present when it is eaten an hour later

Answer 14

100
| in 1 hour
800