Chapter 19

Question 1

Which of these statements about viruses is false?

Answer 1

Viruses can reproduce outside of the host cell

Question 2

Prions are involved in all of these diseases EXCEPT:

Answer 2

HIV

Question 3

What is a virus?

Answer 3

Infectious particle

Question 4

What process causes the death of the cell?

Answer 4

Lytic cycle

Question 5

Many antibiotics target what?

Answer 5

Peptidoglycan

Question 6

What is conjugation?

Answer 6

DNA transfer between two prokaryotic cells

Question 7

Which shape is streptococcus?

Answer 7

Cocci

Question 8

Peptidoglycan is targeted by antibiotics to damage bacteria cell walls, which gram stain will the antibiotics target and attack?

Answer 8

Gram-positive

Question 9

Who is not apart of the protistan diversity?

Answer 9

Bacteria

Question 10

What Excavator in the provision diversity consist of surface proteins that change after each generation?

Answer 10

Trypanosomes

Question 11

Human cells lack which of the following?

Answer 11

Peptidoglycan

Question 12

Prokaryotes may have smaller rings of independently replicating DNA called

Answer 12

Plasmids

Question 13

The viral DNA that is integrated into the host genomes is called a

Answer 13

Provirus

Question 14

Diplomonads have reduced mitochondria called

Answer 14

Mitosomes

Question 15

Parabasalids have reduced mitchondria called

Answer 15

Hydrogensomes

Question 16

Why are there high levels of genetic diversity observed in prokaryotic populations

Answer 16

Mutation, rapid reproduction, genetic recombination

Question 17

What is a disease causing microbe (micro organisms)

Answer 17

Pathogen

Question 18

Why are trypansomes unique?

Answer 18

They have a single cell-surface protein that changes from one generation to the next

Question 19

Diplomonds have a reduced

Answer 19

Mitochondria

Question 20

What is true of prokaryotes?

Answer 20

First organisms to inhabit Earth, mostly unicellular, smaller than eukaryotic cells

Question 21

Autotrophs

Answer 21

Require CO2 or related compounds such as a carbon source

Question 22

What is not true of viruses?

Answer 22

They can reproduce or carry out metabolism outside of a host cell

Question 23

Which cycle replicates the phage genome without destroying the host

Answer 23

Lysogenic cycle

Question 24

What is the kind of protist that combine photosynthesis and hetertrophic nutrition?

Answer 24

Mixotrophs

Question 25

Protist is an informal team used to refer to all eukaryotes that are not

Answer 25

Plants, animals, fungi

Question 26

What clade does giardia intestinalis fall under and what does it cause?

Answer 26

Diplomonads; intestinal infections

Question 27

Which three major groups of protists have recently been discovered and are considered unresolved groups?

Answer 27

Haptophytes, cryptophytes, hemimastigophores

Question 28

Name the component clades for the acronym TACK

Answer 28

Thaumarchaetoa, Aigarchaeto, Crenarchaetoa, korarchaeota

Question 29

It is known that scientists use the gram stain to classify bacteria by cell wall composition, choose the answer which best lists the types of bacteria as well as their characteristics

Answer 29

Gram-positive: bacteria with simpler walls and large amounts of Peptidoglycan, gram-negative: more complex bacteria with less Peptidoglycan and an outer membrane containing lipopolyssacharides

Question 30

Which answer best fits the description of a virus?

Answer 30

An infectious particle consisting of genes packed in a protein coat which cannot reproduce/ carry out metabolism outside of a host cell

Question 31

What is the name of the phage which uses both the lytic and lysogenic cycles? What occasional occurrence initializes the lytic cycle?

Answer 31

Temperature phage; a prophage exits the bacterial chromosome

Question 32

What does archea not lack?

Answer 32

RNA polymerase

Question 33

Which of the following utilizes organic compound as an energy source

Answer 33

Chemoautotrophs

Question 34

Which statement is true about phages?

Answer 34

The host cell dies in the lytic cycle

Question 35

Viruses are

Answer 35

Living organisms, covered by a protein coat