Question 1

Parasitic helminths have a highly developed ______ system to enhance host transmission.

Accepted Answer

A)   digestive
B)   reproductive
C)   muscular
D)   nervous
E)   respiratory

Question 2

Fungal asexual spores _______.

Accepted Answer

A)   produce offspring with different combinations of genes from the parent
B)   are the products of meiotic division by a single parent cell
C)   cannot be seen using a light microscope
D)   are produced when nutrients are limiting
E)   are used to identify fungi

Question 3

Histones are _______.

Accepted Answer

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

Question 4

You are observing an organism under the microscope, and it is clearly multicellular with no cell walls. Your prediction is that this organism is a/an ______.

Accepted Answer

A)   protozoan
B)   bacterium
C)   alga
D)   helminth
E)   fungus

Question 5

Chromosomes are generally not visible by light microscopy unless the cell is undergoing nuclear
division.

Accepted Answer

A) True 
 B)False

Question 6

A protozoan cyst differs from a helminth egg in that _______.

Accepted Answer

A)   a cyst is metabolically active, but an egg is not
B)   the cyst can germinate to form the organism but the egg must be fertilized
C)   cysts have a uniform structure, but eggs have a wide variety of morphologies
D)   the chromosome is free in the cytoplasm of a cyst, but enclosed in a nucleus in an egg

Question 7

Endosymbiosis of a photosynthetic bacterial cell is widely accepted as an explanation for the development of chloroplasts. The presence of these endosymbiotic bacteria provided a cell with the
Advantage of ______.

Accepted Answer

A)   simple, rapid gene transfer
B)   tolerance to oxygen
C)   an electron transport chain
D)   a membrane-bound nucleus
E)   photosynthesis

Question 8

Cell walls are not typically possessed by ______.

Accepted Answer

A)   fungi
B)   bacteria
C)   protozoa
D)   algae

Question 9

The eukaryotic cell membrane is composed of ______.

Accepted Answer

A)   sterols
B)   proteins
C)   phospholipids
D)   sterols, proteins, and phospholipids
E)   sterols and phospholipids only

Question 10

The eukaryotic cell membrane is a bilayer of sterols.

Accepted Answer

A) True 
 B)False

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

Eating undercooked meat can lead to food-borne disease via helminthic infection. What is the common host for Taenia solium?

Accepted Answer

A)   Pigs
B)   Chickens
C)   Ducks
D)   Geese
E)   Cows

Question 13

The nuclear envelope is a single lipid layer.

Accepted Answer

A) True 
 B)False

Question 14

The passageways in the nuclear envelope for movement of substances between the nucleus and cytoplasm are called nuclear ______.

Accepted Answer

A)   endoplasmic reticulum
B)   histones
C)   inclusions
D)   pores
E)   chromatin

Question 15

As part of their reproductive cycle, helminths produce egg and sperm cells. Both of these eukaryotic cell types have an outer surface composed of polysaccharides known as the ______.

Accepted Answer

A)   cyst
B)   microtubule
C)   cell wall
D)   cell membrane
E)   glycocalyx

Question 16

Which of the following is found in eukaryotic cells but not in bacterial cells?

Accepted Answer

A)   Nucleus
B)   Mitochondria
C)   Endoplasmic reticulum
D)   Lysosomes
E)   All of the choices are correct.

Question 17

Plankton are ﬂoating communities of helminths.

Accepted Answer

A) True 
 B)False

Question 18

When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear as a visible, thread-like mass called ______.

Accepted Answer

A)   the nucleolus
B)   chromatin
C)   the nucleosome
D)   the nuclear envelope
E)   nucleoplasm

Question 19

In eukaryotic cells, which of the following organelles contain DNA?

Accepted Answer

A)   Nucleus, nucleolus, and Golgi apparatus
B)   Nucleus, endoplasmic reticulum, and Golgi apparatus
C)   Nucleus, chloroplast, and peroxisome
D)   Nucleus, mitochondria, and Golgi apparatus
E)   Nucleus, chloroplast, and mitochondrion

Question 20

Infections caused by fungi are called mycoses.

Accepted Answer

A) True 
 B)False

Exam 5: Eukaryotic Cells and Microorganisms

When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear as a visible, thread-like mass called ______.

Correct AnswerverifiedShow Answer

As part of their reproductive cycle, helminths produce egg and sperm cells. Both of these eukaryotic cell types have an outer surface composed of polysaccharides known as the ______.

Correct AnswerverifiedShow Answer

Fungal asexual spores _______.

Correct AnswerverifiedShow Answer

Eating undercooked meat can lead to food-borne disease via helminthic infection. What is the common host for Taenia solium?

Correct AnswerverifiedShow Answer

Which of the following is found in eukaryotic cells but not in bacterial cells?

Correct AnswerverifiedShow Answer

The eukaryotic cell membrane is composed of ______.

Correct AnswerverifiedShow Answer

Chromosomes are generally not visible by light microscopy unless the cell is undergoing nuclear division.

Correct AnswerverifiedShow Answer

In eukaryotic cells, which of the following organelles contain DNA?

Correct AnswerverifiedShow Answer

The passageways in the nuclear envelope for movement of substances between the nucleus and cytoplasm are called nuclear ______.

Correct AnswerverifiedShow Answer

Infections caused by fungi are called mycoses.

Correct AnswerverifiedShow Answer

A protozoan cyst differs from a helminth egg in that _______.

Correct AnswerverifiedShow Answer

Parasitic helminths have a highly developed ______ system to enhance host transmission.

Correct AnswerverifiedShow Answer

Endosymbiosis of a photosynthetic bacterial cell is widely accepted as an explanation for the development of chloroplasts. The presence of these endosymbiotic bacteria provided a cell with the Advantage of ______.

Correct AnswerverifiedShow Answer

You are observing an organism under the microscope, and it is clearly multicellular with no cell walls. Your prediction is that this organism is a/an ______.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Cell walls are not typically possessed by ______.

Correct AnswerverifiedShow Answer

The eukaryotic cell membrane is a bilayer of sterols.

Correct AnswerverifiedShow Answer

The nuclear envelope is a single lipid layer.

Correct AnswerverifiedShow Answer

Histones are _______.

Correct AnswerverifiedShow Answer

Plankton are ﬂoating communities of helminths.

Correct AnswerverifiedShow Answer

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