Question 1:
What are microorganisms?
What are microorganisms?
Answer:
Microorganisms are minute organisms which cannot be seen with the naked eye.
Question 2:
(a) Name five groups of microorganisms.
(b) What are the characteristics used to classify microorganisms into five groups?
(a) Name five groups of microorganisms.
(b) What are the characteristics used to classify microorganisms into five groups?
Answer:
(a) Fungi, algae, protozoa, bacteria, viruses
(b) Size, shape, method of reproduction, nutrition, habitat
Question 3:
Name the group of microorganisms that reproduces asexually through the formation of spores.
Name the group of microorganisms that reproduces asexually through the formation of spores.
Answer:
Fungi, bacteria
Question 4:
State two basic structures that make up a virus.
State two basic structures that make up a virus.
Answer:
Deoxyribonucleic acid (DNA)/ribonucleic acid (RNA) and protein layer (capsid)
Question 5:
State five factors that affect the growth of microorganisms.
State five factors that affect the growth of microorganisms.
Answer:
Nutrition, humidity, light, temperature, pH value
Question 6:
Figure 1 shows a type of microorganism.
Figure 1 shows a type of microorganism.
(a) What is the group of the microorganism shown above?
(b) (i) What is the structure labelled X?
(ii) State the function of this structure.
Answer:
(a) Protozoa
(b)(i) Pseudopodium
(b)(ii) To move and engulf food