Question 1

Toxoplasmosis

Accepted Answer

A) is usually a mild illness in adults. 
B) can be acquired by consumption of undercooked meats. 
C) can be transmitted in cat faeces. 
D) can cause congenital defects in an unborn baby. 
E) all of the above.

Question 2

A protozoal disease which is often transmitted in contaminated drinking water is

Accepted Answer

A) toxoplasmosis. 
B) trichomoniasis. 
C) giardiasis. 
D) chlamydia. 
E) malaria.

Question 3

Moulds usually reproduce by

Accepted Answer

A) binary fission. 
B) budding. 
C) forming asexual spores. 
D) schizogony. 
E) forming gametes.

Question 4

Which of the following statements about fungi is TRUE?

Accepted Answer

A) Fungi may be unicellular or multicellular. 
B) All fungi are eucaryotic. 
C) A few fungi are pathogenic to humans. 
D) Fungi are heterotrophic. 
E) All of the above.

Question 5

Which of the following diseases is caused by a protozoan?

Accepted Answer

A) Ringworm. 
B) Legionnaires' disease. 
C) Toxoplasmosis. 
D) Yellow fever. 
E) Thrush.

Question 6

Tinea is

Accepted Answer

A) a systemic fungal infection. 
B) caused by a worm. 
C) an infection caused by a saccharomycete. 
D) a cutaneous mycosis. 
E) none of the above.

Question 7

The organisms that cause parasitic infections

Accepted Answer

A) infect only humans. 
B) produce resistant spores in soil and water supplies. 
C) have a simple life cycle. 
D) are protozoa,helminths or arthropods. 
E) all of the above.

Question 8

Candida albicans is a yeast which

Accepted Answer

A) is a source of antibiotics. 
B) is a normal human commensal. 
C) only causes infections after antibiotic use. 
D) is a common cause of impetigo. 
E) all of the above.

Question 9

Candida albicans exhibits dimorphism,which means that it

Accepted Answer

A) can grow aerobically or anaerobically. 
B) can grow in filamentous form or as yeast cells. 
C) grows in pairs of cells. 
D) contains two nuclei. 
E) contains subcellular organelles.

Question 10

The current treatment for worm infestations in developing countries

Accepted Answer

A) has led to the eradication of most worm infestations. 
B) relies on the destruction of intermediate hosts or vectors. 
C) is based on regular administration of antihelminthic drugs. 
D) is impractical because of the high cost of drugs. 
E) none of the above.

Question 11

Flukes

Accepted Answer

A) have a relatively simple life cycle. 
B) are flat worms that attach to the large intestine. 
C) are worms with a free-living infective stage found in water. 
D) are commonly acquired while swimming in Australian rivers. 
E) infect humans following ingestion of contaminated water.

Question 12

Which of the following statements is FALSE?

Accepted Answer

A) Candida infections always follow antibiotic usage. 
B) Yeasts are a common cause of vaginitis. 
C) Cutaneous Candida infections occur in diabetic patients. 
D) Candida can cause thrush or systemic infections. 
E) Candida albicans causes thrush in neonates.

Question 13

Which of the following predisposes a person to a fungal infection?

Accepted Answer

A) Neutropenia. 
B) Treatment with immunosuppressive drugs. 
C) Treatment with broad-spectrum antibiotics. 
D) Diabetes. 
E) All of the above.

Question 14

Protozoa are

Accepted Answer

A) single-celled procaryotic organisms. 
B) procaryotic organisms that live in water. 
C) single-celled eucaryotic organisms. 
D) multi-celled eucaryotic organisms. 
E) multi-celled procaryotic organisms.

Question 15

Which group of protozoa is non-motile?

Accepted Answer

A) Sarcodina. 
B) Amoebae. 
C) Flagellates. 
D) Ciliates. 
E) Mastigophora.

Question 16

Which of the following statements is TRUE?

Accepted Answer

A) Yeasts are unicellular organisms. 
B) Yeasts reproduce by budding. 
C) Some yeasts can grow in a filamentous form. 
D) Some yeasts can ferment glucose to alcohol. 
E) All of the above.

Question 17

Lice

Accepted Answer

A) are protozoa that live on the skin. 
B) are transmitted by fleas. 
C) are the egg form of the common bed bug. 
D) are only transmitted by sexual contact. 
E) none of the above.

Question 18

Thrush is caused by

Accepted Answer

A) herpes zoster. 
B) Chlamydia trachomatis. 
C) Staphylococcus epidermidis. 
D) Candida albicans. 
E) human papilloma virus.

Question 19

A microorganism that mainly causes disease in people with weakened body defences is called a(n)

Accepted Answer

A) systemic mycosis. 
B) spore-former. 
C) opportunistic pathogen. 
D) filamentous pathogen. 
E) natural pathogen.

Question 20

A yeast that commonly causes meningitis in people with AIDS is

Accepted Answer

A) Cryptococcus neoformans. 
B) Candida albicans. 
C) Saccharomyces cerevisiae. 
D) Pneumocystis jiroveci. 
E) Candida glabrata.

Exam 6: Eucaryotic Microorganisms: Fungi, protozoa and Multicellular Organisms