Question 1

Most helminths are macroscopic, yet they are studied in the field of microbiology. This classification is due to the fact that during their lifecycle, they may produce which microscopic structures?

Accepted Answer

A)   Eggs or larvae
B)   Pili
C)   Proglottids
D)   Spores A

Question 2

Histones are ________.

Accepted Answer

A)   found in polyribosomes
B)   enzymes found in lysosomes
C)   proteins of the cytoskeleton
D)   proteins associated with DNA in the nucleus
E)   on the surface of rough endoplasmic reticulum D

Question 3

The cell wall of fungi and algae are chemically identical to the bacterial cell wall.

Accepted Answer

A) True 
 B)False  False

Question 4

The eukaryotic cell's glycocalyx is ________.

Accepted Answer

A)   mostly polysaccharide
B)   the site where many metabolic reactions occur
C)   also called the cell wall
D)   composed of lipids
E)   protection against osmotic lysis

Question 5

All fungi have hyphae.

Accepted Answer

A) True 
 B)False

Question 6

Infections caused by fungi are called mycoses.

Accepted Answer

A) True 
 B)False

Question 7

The first primitive eukaryotic cells likely evolved from ________.

Accepted Answer

A)   archaea
B)   bacteria
C)   prokaryotes
D)   the last common ancestor
E)   None of the choices are correct.

Question 8

Chitin is a chemical component of the cell walls of ________.

Accepted Answer

A)   protozoa
B)   algae
C)   fungi
D)   bacteria
E)   All of the choices are correct.

Question 9

Fungal infections are known as ________ and can be acquired from environmental or clinical sources.

Accepted Answer

A)   secondary infections
B)   vegetative infections
C)   mycoses
D)   saprobic infections
E)   parasitoses

Question 10

Filamentous fungi are called ________.

Accepted Answer

A)   pseudohyphae
B)   septa
C)   molds
D)   dimorphic
E)   mycelium

Question 11

The group of protozoa that use pseudopodia to move are the ________.

Accepted Answer

A)   sarcodina
B)   ciliophora
C)   mastigophora
D)   apicomplexa
E)   None of the choices is correct.

Question 12

The cytoskeleton ________.

Accepted Answer

A)   anchors organelles
B)   provides support
C)   functions in movements of the cytoplasm
D)   helps maintain cell shape
E)   All of the choices are correct.

Question 13

Which type(s) of eukaryotic organisms can cause infections in humans?

Accepted Answer

A)   Helminths
B)   Fungi
C)   Protozoans
D)   Helminths, fungi, and protozoans

Question 14

Which of the following lines of evidence suggest that mitochondria evolved from the endosymbiosis of a pre-eukaryotic cell with a prokaryote?

Accepted Answer

A)   They contain circular molecules of DNA
B)   They contain 70S ribosomes
C)   They divide independently from the cell
D)   All of these suggest that mitochondria evolved from prokaryotes.

Question 15

A saprobe differs from a parasite in that ________.

Accepted Answer

A)   a saprobe acquires its nutrients from the remains of dead animals or plants whereas a parasite acquires its nutrients from living tissue
B)   a parasite acquires its nutrients from the remains of dead animals or plants whereas a saprobe acquires its nutrients from living tissue
C)   a saprobe synthesizes its nutrients using light energy and CO2 whereas a parasite acquires its nutrients from living tissue
D)   a parasite synthesizes its nutrients using light energy and CO2 whereas a saprobe acquires its nutrients from living tissue

Question 16

The cell's series of tunnel-like membranes functioning in transport and storage are the ________.

Accepted Answer

A)   mitochondria
B)   lysosomes
C)   Golgi apparatus
D)   chloroplasts
E)   endoplasmic reticulum

Question 17

In eukaryotic cells, ribosomes have two locations: scattered in the ________ and on the surface of the ________.

Accepted Answer

A)   cytoplasm; Golgi apparatus
B)   nucleus; Golgi apparatus
C)   cytoplasm; endoplasmic reticulum
D)   nucleus; endoplasmic reticulum

Question 18

In the specimen, it is noted that some of the cells are producing filamentous structures called hyphae. The RN educates the patient about the microscopic analysis. A term referring to the ability of a yeast able to exist in either yeast or hyphal form is ________.

Accepted Answer

A)   dioecious
B)   dimorphic
C)   dichotomous
D)   pseudohypha

Question 19

Which fiber of the cytoskeleton is a hollow tube that is also a component of flagella and the spindle fibers that form during mitosis?

Accepted Answer

A)   Microtubules
B)   Actin filaments
C)   Intermediate filaments
D)   Hyphae

Question 20

After returning from a trip to Africa, Tom begins to feel very tired and weak. He has severe anemia. A blood smear reveals a protozoan is present in his blood. The health care provider tells Tom he has malaria. Which of the following could be the causative agent of his disease?

Accepted Answer

A)   HIV
B)   Nagleria fowleri
C)   Plasmodium falciparum
D)   Trichophyton
E)   Histoplasma capsulatum

Exam 4: Eukaryotic Cells and Microorganisms