Bacteria

Question 1

The most abundant organisms on the human body are

A) Insects
B) Microbes
C) Viruses
D) Hair fibres

Answer 1

ANSWER: B

Question 2

The most abundant organisms on the human body are

A) Insects
B) Microbes
C) Viruses
D) Hair fibres

Answer 2

ANSWER: B

Question 3

Bacteria are prokaryotes. What does this mean?

A) Have a nucleus
B) Don’t have a nucleus
C) They are small
D) They can move

Answer 3

ANSWER: B

Question 4

Bacteria can move. What is the name of the structure that moves them?

A) Flagellum
B) Appendage
C) Tail
D) Whip

Answer 4

ANSWER: A

Question 5

What type of medicine kills bacteria?

A) Cough medicine
B) Vaccine
C) Aspirin
D) Antibiotics

Answer 5

ANSWER: D

Question 6

Examples of oral conditions caused by bacteria are

A) Caries
B) Coldsores
C) Thrush
D) Periodontal disease

Answer 6

ANSWER: A, D

Question 7

The cell wall of gram negative bacteria produce endotoxins whilst the bacteria is replicating
A) True
B) False

Answer 7

ANSWER: B

Question 8

The cell wall of gram negative bacteria produce endotoxins during cell lysis
A) True
B) False

Answer 8

ANSWER: A

Question 9

Bacteria are prokaryotes. What does this mean?
Question 1 Select one:

a. Have a nucleus

b. They can move

c. Don’t have a nucleus

d. They are small

Answer 9

Don’t have a nucleus

Question 10

Which of the following statements about the nuclear envelope is INCORRECT?
Question 8 Select one:

a. The outer layer is continuous with endoplasmic reticulum

b. The outer layer is covered with cilia

c. The nuclear envelope is a double membrane

d. Pores in the membrane allow the passage of substances

Answer 10

The outer layer is covered with cilia

Question 11

Which of the following statements about the nucleus is INCORRECT?
Question 9 Select one:

a. Directs all metabolic activities

b. Stores genetic material

c. Is involved in cell division

d. Is the smallest feature in a cell

Answer 11

Is the smallest feature in a cell

Question 12

Which of the following statements is false?
Question 10 Select one:

a. The shape and structure of a cell depends on the function it performs

b. The plasma membrane comprises a single layer

c. All cells have a nucleus with the exception of mature erythrocytes

d. The cell is the smallest functional unit in the body

Answer 12

The plasma membrane comprises a single layer

Question 13

Which organelle is known as the power house of the cell?
Question 13 Select one:

a. Centrosome

b. Mitochondrion

c. Golgi apparatus

d. Lysosome

Answer 13

Mitochondrion

Question 14

The term commensal microflora refers to the pathogenic nature of micro-organisms to the host
Question 17 Select one:

a. False

b. True

Answer 14

False