Gr 11 Microbes

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Gr 11 Microbes

A quick revision quiz on the biodiversity and classification of micro-organisms

Email address *

Name *

Surname *

Teacher *

Mrs Arlow

Mrs Clulow

Mrs Vissian

Ms Viljoen

1. Ways in which human immunodeficiency virus is transmitted *

Sexual intercourse with an infected person

Tending to a wound of a bleeding infected person

Pregnancy

All of the above

Only options 1 and 2

2. What do we call treatment that is given to prevent a specific disease? *

Prophylaxis

Antibiotic

Intravenous quinine

Vitamins

3. Ways in which someone could avoid getting tinea pedis *

Keep feet dry and clean

Walk barefoot in public areas

Keep feet moist and warm

Walk at a fast pace

4. If a virus is metabolically inactive without a host, it is said to be a... *

pathogen

obligate intracellular parasite

obligate intercellular parasite

opportunistic parasite

5. Study the representation of viral reproduction below. Using the letters only, put the steps into the correct sequence *

H, G, D, C, A, E, B, F

G, E, B, A, D, F, H, C

H, G, D, A, B, E, C, F

H, G, D, A, B, C, E, F

6. Refer to the figures below. Using the letters only, give the correct sequence that would correctly label the bacteria as bacillus, coccus, and spirilum. *

C, A, B

B, A, C

B, C, A

A, B, C

7. Which part of a bacterial structure protects the bacterium against the environment, stopping water and nutrient loss *

Fimbrae

Pilus

Glycocalyx

Cell wall

8. Why are certain bacteria positive contributors to the environment. *

They decompose and convert wastes into nutrients

They play key roles in the nitrogen cycle

They contribute to soil fertility

All of the above

9. What process is depicted in the image below, representing an amoeba obtaining nutrients for survival. *

Pinocytosis

Protist phagocytosis

Protist engulphing

Ingestion

10. Refer to the diagram below and provide labels for the structures labelled A, C, and E respectively. *

Spore, Hypha, Stamen

Pollen, Stolon, Sporangium

Spore, Stolon, Rizome

Spore, Stolon, Rhizoid

11. Refer to the image below depicting an immunity second line of defence. What is being represented here? *

Secretion

Inflammation

Acquired immunity

Specific passive immunity

12. What is the role of antibodies in our immune system? *

Identify specific antigens of pathogens.

Mark antigens of microbes entering the bloodstream, so leukocytes can destroy them

Both of the above

None of the above

13. Which of the following is FALSE regarding secondary immune response. *

Short lag phase

Very sharp increase in antibody concentrations

Slow response

Disease does not typically manifest itself

14. Study the representation of the nitrogen cycle below and answer the questions that follow. The correct labels for processes D and F respectively, are... *

Decomposition and Nitrogen fixing

Decomposition and nitrification

Decomposition and ammonification

Assimilation and Nitrogen fixing

15. Referring to the diagram above in question 14. The correct labels for the types of useful bacteria labelled 5, 8 and 9 respectively are... *

nitrogen-fixing bacteria, denitrifying bacteria, nitrifying bacteria

nitrogen-fixing soil bacteria, nitrifying bacteria, denitrifying bacteria

denitrifying bacteria, nitrifying bacteria, ammonifying bacteria

nitrogen-fixing soil bacteria, nitrate bacteria, nitrogen bacteria

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