Chapters 4-6

Question 1

Which cell structure is not a component of all cells?

Answer 1

Cell Wall

Question 2

Viruses are not considered living things because:

Answer 2

They are not cells, they cannot reproduce by themselves and they lack metabolism

Question 3

Which of the following is not found in all bacterial cells?

Answer 3

Actin Cytoskeleton

Question 4

The major locomotor structures in bacteria are:

Answer 4

Flagella

Question 5

Pili are appendages in _____ bacteria that serves as a means of ______

Answer 5

Gram negative; Genetic exchange

Question 6

An example of a glycocalyx is

Answer 6

A capsule

Question 7

Which of the following is a primary bacterial cell wall function?

Answer 7

Support

Question 8

Which of the following is present in both gram positive and gram negative cell walls?

Answer 8

A peptidoglycan

Question 9

Metachromatic granules are concentrated_____ found in ________

Answer 9

PO4; Corynebacterium

Question 10

Which of the following Prokaryotes lacks cell walls?

Answer 10

Mycoplasms

Question 11

The LPS layer in gram negative cell walls releases ____ that cause ______.

Answer 11

Endotoxins; fever

Question 12

Bacterial endospores functions in _______.

Answer 12

Survival

Question 13

An arrangement in packets of light cells is described as a _____.

Answer 13

Sarcina

Question 14

The major difference between a spirochete and a spirillium is the _____________.

Answer 14

the nature of motility

Question 15

Which phylum contains bacteria with a gram positive cell wall?

Answer 15

Firmicutes

Question 16

To which taxonomic group do cyanobacteria belong?

Answer 16

Domain Bacteria

Question 17

Which stain is used to distinguish differences between the cell walls of medically important bacteria

Answer 17

Gram Stain

Question 18

The first living cells on earth would most likely resemble which of the these?

Answer 18

An Archaeon

Question 19

A virus is a tiny infectious

Answer 19

particle

Question 20

Viruses are known to infect

Answer 20

all organisms

Question 21

The capsid is composed of protein subunits called

Answer 21

capsomers

Question 22

The envelope of an animal virus is derived from the _____of its host cell

Answer 22

membrane

Question 23

The nucleic acid of a virus is

Answer 23

either DNA or RNA

Question 24

The general steps in a viral multiplication cycle are:

Answer 24

adsorption, penetration, synthesis, assembly, and release

Question 25

A prophage is a/an _____ stage in the cycle of _______

Answer 25

latent; bacterial viruses

Question 26

The nucleic acid of animal viruses enters the host cell through

Answer 26

fusion and endocytosis

Question 27

In general, RNA viruses multiply in the cell ______ and DNA viruses multiply in the cell_______.

Answer 27

cytoplasm; nucleus

Question 28

Enveloped viruses carry surface receptors called

Answer 28

spikes

Question 29

Viruses that persist in the cell and cause recurrent disease are considered

Answer 29

latent

Question 30

Viruses cannot be cultivated in

Answer 30

blood agar

Question 31

Clear patches in cell cultures that indicate sites of virus infections are called

Answer 31

plaques

Question 32

Which of these is not a general pattern of virus morphology?

Answer 32

complex, helical

Question 33

Which of these is true f prions?

Answer 33

They cause death of brain cells

Question 34

Both flagella and cilia are found primarily in

Answer 34

protozoa

Question 35

Features of the nuclear envelope include

Answer 35

a double membrane structure and pores that allow communication with the cytoplasm

Question 36

The cell wall is usually found in which eukaryotes?

Answer 36

fungi and algae

Question 37

What is embedded in rough endoplasmic reticulum?

Answer 37

ribosomes

Question 38

Yeasts are ______ fungi, and molds are _____ fungi.

Answer 38

unicellular; filamentous

Question 39

In general, fungi derive nutrients through

Answer 39

digesting organic substrates

Question 40

A hypha divided into compartments by cross walls is called

Answer 40

septate

Question 41

Algae generally contain some type of

Answer 41

chlorophyll

Question 42

Which algal group is most closely related to plants?

Answer 42

Chlorophyta

Question 43

Which characteristic(s) is/are not typical of protozoan cells?

Answer 43

spore

Question 44

The protozoan trophozoite is the

Answer 44

active feeding stage

Question 45

All mature sporozoa are

Answer 45

parasitic and nonmotile

Question 46

Parasitic helminthes reproduce with

Answer 46

eggs and sperm

Question 47

Mitochondria likely originated from

Answer 47

rickettsias

Question 48

Human fungal infections involve and affect what areas of the human body?

Answer 48

skin, mucous membranes and lungs

Question 49

Most heminth infections

Answer 49

spread through major systems in the body

Question 50

The cause of malaria

Answer 50

Plasmodium

Question 51

Single celled alga with silica in it's cell wall

Answer 51

Diatom

Question 52

Fungal cause of Ohio Valley Fever

Answer 52

Histoplasma

Question 53

The cause of amebic dysentery

Answer 53

Entamoeba

Question 54

Genus of black bread mold

Answer 54

Rhizopus

Question 55

Helminth worm involved in pinworm infection

Answer 55

Enterobius

Question 56

Motile flagellated alga with an eyespot

Answer 56

Euglenid

Question 57

A yeast that infects the lungs

Answer 57

Cryptococcus

Question 58

Flagellated protozoan genus that causes an STD

Answer 58

Trichomonas

Question 59

Alga that causes red tides

Answer 59

Dinoflagellate