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Midterm Review Chapters 4 - 7

Total questions: 38

Worksheet time: 19mins

Name
Class
Date
1.

When a rod-shaped bacteria is plump and short, it is called a

a)

spirochete

b)

spirillum

c)

vibrio

d)

coccobacillus

2.

Chemical analysis of a bacterial cell structure detects calcium dipicolinic acid. What is the identity of this structure?

a)

capsule

b)

endospore

c)

cell wall

d)

slime layer

3.

The bacterial chromosome

a)

forms a single linear strand of DNA

b)

is part of the nucleoid

c)

is located in the cell membrane

d)

contains all the cell's plasmids

4.

The transfer of genes during bacterial conjugation involves rigid, tubular appendages called

a)

cilia

b)

flagella

c)

sex pili

d)

fimbriae

5.

Which of the following characteristics is not a property of cells or living things?

a)

cell boundary

b)

ability to replicate

c)

responds to stimulus

d)

nucleus

6.

Peptidoglycan is a unique macromolecule found in bacterial

a)

cell walls

b)

cell membranes

c)

slime layers

d)

inclusions

7.

The short, numerous appendages used by some bacterial cells for adhering to surfaces are called

a)

periplasmic flagella

b)

fimbriae

c)

pili

d)

cillia

8.

Sarcinae refers to

a)

a cuboidal packet of cells

b)

cocci in pairs

c)

vibrios in threes

d)

groups of endospores

9.

Enodspores are

a)

metabolically inactive

b)

living structures

c)

resistant to heat and chemical destruction

d)

all of these are correct

10.

Which cell structure is an important component in modern genetic engineering?

a)

mesosomes

b)

ribosomes

c)

plasmids

d)

capsules

11.

The term that refers to the presence of flagella all over the cell surface is

a)

monotrichous

b)

amphitrichous

c)

peritrichous

d)

lophotrichouse

12.

Larvae and eggs are developmental forms of

a)

protozoa

b)

helminths

c)

fungi

d)

algae

13.

Cell walls are not found on typical cells of

a)

bacteria

b)

protozoa

c)

fungi

d)

algae

14.

In eukaryotic cells, the structure primarily responsible for the adherence of cells to surfaces in the environment and the formation of biofilms is the

a)

glycocalyx

b)

cilia

c)

flagella

d)

cell membrane

15.

A mold is observed to have asexual conidia, sexual spores within a sac, and septate hyphae. It is most likely classified in the

a)

Fungi Imperfecti

b)

Basidiomycota

c)

Ascomycota

d)

Zygomycota

16.

Protists include

a)

algae and protozoa

b)

helmiths

c)

yeasts and mold

d)

all of these choices are correct

17.

The organelle involved in intracellular digestion of food particles is the

a)

transitional vesicle

b)

mitochondria

c)

Golgi apparatus

d)

lysosome

18.

All of the following are helminths except

a)

pinworms

b)

roundworms

c)

trypanosomes

d)

flukes

19.

The cytoskeleton

a)

functions in movements of the cytoplasm

b)

provides support

c)

helps maintain cell shape

d)

all of these are correct

20.

Sources for human infection with worms are all of the following except

a)

infected animals

b)

contaminated air

c)

contaminated food

d)

contaminated soil

21.

Chitin is a chemical component of the cell walls of

a)

fungi

b)

algae

c)

protozoa

d)

bacteria

22.

When buds remain attached, they form a chain of yeast cells called

a)

septa

b)

pseudohyphae

c)

molds

d)

mycelium

23.

Which of the following spores are produced within a sac?

a)

blastospores

b)

zygospores

c)

arthrospores

d)

sporagiospores

24.

The core of every virus particle always contains

a)

DNA and RNA

b)

DNA

c)

either DNA or RNA

d)

capsomers

25.

Viruses acquire envelopes around their nucleocapsids during

a)

penetration

b)

adsorption

c)

assembly

d)

release

26.

Classification of viruses into families involves determining all the following characteristics except

a)

type of nucleic acid

b)

presence of an envelope

c)

type of capsid

d)

biochemical reactions

27.

Viral cultivation is used for

a)

observing the effects of viral infections on host cells

b)

preparation of vaccines

c)

diagnosis of viral infections

d)

all of these are correct

28.

Which type of virus is most likely to cause the immediate damage and destruction of an infected animal cell when it is released?

a)

an enveloped virus

b)

DNA virus

c)

RNA virus

d)

nonenveloped virus

29.

Helical and icosahedral are terms used to describe the shapes of a virus

a)

core

b)

capsid

c)

envelope

d)

spike

30.

Which of the following terms refers to microorganisms that live in or on the body and cause harm?

a)

mesophiles

b)

halophiles

c)

pathogens

d)

commensals

31.

The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing is the

a)

lag phase

b)

stationary phase

c)

prophase

d)

death phase

32.

Microorganisms that live in sever habitats, such as very hot, acidic or salty environments, are called

a)

psychrophiles

b)

barophiles

c)

extremeophiles

d)

halophiles

33.

The time interval from parent cell to two new daughter cells is called the

a)

culture time

b)

generation time

c)

binary fission

d)

growth curve

34.

Nutrient adsorption is mediated by the

a)

peptidoglycan layer

b)

cell membrane

c)

cell wall

d)

nuclear membrane

35.

An organism that can exist in both oxygen and oxygen-free environments is a(n)

a)

facultative anaerobe

b)

aerobe

c)

obligate aerobe

d)

obligate anaerobe

36.

Organisms that feed on dead organisms for nutrients are called

a)

photorophs

b)

autotrophs

c)

saprobes

d)

parasites

37.

Microbes in a close relationship in which one benefits and the other is not harmed is called

a)

satellitism

b)

commensalism

c)

mutualism

d)

synergism

38.

In ___ conditions, the cell wall will help prevent the cell from bursting.

a)

isotonic

b)

hypertonic

c)

hypotonic

d)

mesotonic