Microorganisms

Question 1

Describe viruses

Answer 1

Lack all cell organelles
Particle not a cell
Made of capsid and DNA
Can only perform reproduction

Question 2

Draw a diagram or a virus

Answer 2

.

Question 3

What are the 2 white blood cells?

Answer 3

Phagocytes - kill manually

Lymphocytes - produce antibodies

Question 4

Draw a diagram of a bacterium

Answer 4

;

Question 5

How do vaccines work?

Answer 5

White blood cells will start to produce antibodies against the bacteria. Very few antibodies will be required to kill the bacteria the rest are stored in the body for future use. Person is now I’m,une to bacterium

Question 6

Ways of controlling bacteria in food

Answer 6

Heating kills bacteria 
Cooling stops from reproducing 
Dehydration kills
Adding chemicals 
Radiation kills

Question 7

What is osmregulation?

Answer 7

Process of maintaining a constant water balance

Question 8

What is mutualism?

Answer 8

2 organisms living together helping each other

Question 9

How does the hydra help the Chloe Ella?

Answer 9

Provides it with movement, protection/shelter, provides co2 for photosynthesis

Question 10

Why is the mosquito a good vector?

Answer 10

Has wings to fly from one host to next and sticky legs to get stuck to host

Question 11

Describe binary fission

Answer 11

1. Parent amoeba reaches maturity
2. Nucleus divides
3. Cell membrane starts to divide
4. 2 daughter cells