Question 1

Most ciliates are likely to be found in

Accepted Answer

A)  I only 
B)  I and II 
C)  II and III 
D)  II only 
E)  III only 
A)  I only 
B)  I and II 
C)  II and III 
D)  II only 
E)  III only

Question 2

Match the following letters with the number with which they best correspond.
 a.protist
b.prokaryote
c.photoautotroph
d.pathogen
e.protocell
f.halophile
g.antibiotic
-disease-causing agent

Accepted Answer

The answer of Match the following letters with the number...

Question 3

Which of the following bacteria causes cholera?

Accepted Answer

A)  Streptococcus 
B)  Salmonella 
C)  Staphylococcus 
D)  Cyanobacteium 
E)  Vibrio 
A)  Streptococcus 
B)  Salmonella 
C)  Staphylococcus 
D)  Cyanobacteium 
E)  Vibrio

Question 4

The protist has an organelle called an apicoplast.From what organelle did the apicoplast evolve?

Accepted Answer

A)  mitochondrion 
B)  nucleus 
C)  chloroplast 
D)  Golgi body 
E)  lysosome 
A)  mitochondrion 
B)  nucleus 
C)  chloroplast 
D)  Golgi body 
E)  lysosome

Question 5

____ are dome-shaped structures composed of layers of early cells and sediments.

Accepted Answer

A)  Meteorites 
B)  Pumice stones 
C)  Stromatolites 
D)  Rhyolites 
E)  Ignimbrites 
A)  Meteorites 
B)  Pumice stones 
C)  Stromatolites 
D)  Rhyolites 
E)  Ignimbrites

Question 6

HIV affects

Accepted Answer

A)  the human reproductive system. 
B)  the human circulatory system. 
C)  the human respiratory system. 
D)  the human immune system. 
E)  the human digestive system. 
A)  the human reproductive system. 
B)  the human circulatory system. 
C)  the human respiratory system. 
D)  the human immune system. 
E)  the human digestive system.

Question 7

Two researchers suggested in the 1960s that ____ may have been the first informational molecule.

Accepted Answer

A)  DNA 
B)  a protein 
C)  RNA 
D)  a saccharide 
E)  a peptide 
A)  DNA 
B)  a protein 
C)  RNA 
D)  a saccharide 
E)  a peptide

Question 8

How does Plasmodium alter the behavior of the mosquito that carries it?

Accepted Answer

A)  it alters the sex of the mosquito 
B)  it causes it to bite more often 
C)  it causes it to mate more often 
D)  it makes it more attracted to humans than other animals 
E)  more than one of these is the answer 
A)  it alters the sex of the mosquito 
B)  it causes it to bite more often 
C)  it causes it to mate more often 
D)  it makes it more attracted to humans than other animals 
E)  more than one of these is the answer

Question 9

The first life-related and carbon-based molecule was synthesized in vitro by a German chemist.What was that molecule?

Accepted Answer

A)  starch 
B)  fructose 
C)  acetaldehyde 
D)  urea 
E)  rubisco 
A)  starch 
B)  fructose 
C)  acetaldehyde 
D)  urea 
E)  rubisco

Question 10

Which of the following is NOT a structural component of any virus?

Accepted Answer

A)  double stranded RNA 
B)  single stranded DNA 
C)  cell membranes 
D)  ribosomes 
E)  all of these ARE structural components of viruses 
A)  double stranded RNA 
B)  single stranded DNA 
C)  cell membranes 
D)  ribosomes 
E)  all of these ARE structural components of viruses

Question 11

Some bacteria in the deep oceans use iron as an energy source to make carbohydrates from carbon dioxide.These bacteria would be classified as

Accepted Answer

A)  chemoautotrophs. 
B)  chemoheterotrophs. 
C)  photoautotrophs. 
D)  photoheterotrophs. 
E)  decomposers. 
A)  chemoautotrophs. 
B)  chemoheterotrophs. 
C)  photoautotrophs. 
D)  photoheterotrophs. 
E)  decomposers.

Question 12

Which of the following nucleic acid elements is thought that viruses might have evolved from?

Accepted Answer

A)  mRNA 
B)  introns 
C)  transposons 
D)  mitochondrial DNA 
E)  exons 
A)  mRNA 
B)  introns 
C)  transposons 
D)  mitochondrial DNA 
E)  exons

Question 13

It is thought that viruses may have originated from cells because

Accepted Answer

A)  of their small size. 
B)  they are pathogens. 
C)  they can only replicate within a host cell. 
D)  they do not have organelles. 
E)  more than one of these. 
A)  of their small size. 
B)  they are pathogens. 
C)  they can only replicate within a host cell. 
D)  they do not have organelles. 
E)  more than one of these.

Question 14

How do viruses differ from all other microorganisms?

Accepted Answer

A)  they do not evolve 
B)  they have no nucleus 
C)  they are non-cellular 
D)  they are pathogens 
E)  more than one of these is a difference between viruses and all other microorganisms 
A)  they do not evolve 
B)  they have no nucleus 
C)  they are non-cellular 
D)  they are pathogens 
E)  more than one of these is a difference between viruses and all other microorganisms

Question 15

Red algae

Accepted Answer

A)  are primarily marine organisms. 
B)  are thought to have developed from green algae. 
C)  contain xanthophylls as their main accessory pigments. 
D)  are actually brown. 
E)  are all of these. 
A)  are primarily marine organisms. 
B)  are thought to have developed from green algae. 
C)  contain xanthophylls as their main accessory pigments. 
D)  are actually brown. 
E)  are all of these.

Question 16

Clay compounds were thought to be original sites for the formation of

Accepted Answer

A)  nucleotide strands. 
B)  fat globules. 
C)  short polysaccharides. 
D)  amino acid chains. 
E)  sugar-protein complexes. 
A)  nucleotide strands. 
B)  fat globules. 
C)  short polysaccharides. 
D)  amino acid chains. 
E)  sugar-protein complexes.

Question 17

Examine the figure above and answer the following question(s).
-In the figure above,the viral DNA in the lysogenic pathway

Accepted Answer

A)  has been destroyed by host bacterial enzymes. 
B)  is integrated into the bacterial chromosome. 
C)  has been copied and changed into bacterial DNA. 
D)  is no longer present. 
E)  has been transcribed into RNA. 
A)  has been destroyed by host bacterial enzymes. 
B)  is integrated into the bacterial chromosome. 
C)  has been copied and changed into bacterial DNA. 
D)  is no longer present. 
E)  has been transcribed into RNA.

Question 18

Match the following letters with the number with which they best correspond.
 a.protist
b.prokaryote
c.photoautotroph
d.pathogen
e.protocell
f.halophile
g.antibiotic
-weapon used against pathogenic bacteria

Accepted Answer

The answer of Match the following letters with the number...

Question 19

Metagenomic studies of prokaryotes have revealed that

Accepted Answer

A)  there is very little diversity among bacteria. 
B)  archaea are more closely related to bacteria than to eukaryotes. 
C)  bacteria and archaea are essentially the same organisms. 
D)  most archaea evolved from viruses. 
E)  none of these things were revealed by metagenomic studies. 
A)  there is very little diversity among bacteria. 
B)  archaea are more closely related to bacteria than to eukaryotes. 
C)  bacteria and archaea are essentially the same organisms. 
D)  most archaea evolved from viruses. 
E)  none of these things were revealed by metagenomic studies.

Question 20

Classification.Answer the questions using the five groups of protistans listed below.
a.apicomplexans
b.amoebas
c.euglenoids
d.dinoflagellates
e.trypanosomes
-Toxins from these can kill humans.

Accepted Answer

The answer of Classification.Answer the questions using the five groups...

Exam 13: Early Life Forms and the Viruses

Most ciliates are likely to be found in

Match the following letters with the number with which they best correspond. a.protist b.prokaryote c.photoautotroph d.pathogen e.protocell f.halophile g.antibiotic -disease-causing agent

Which of the following bacteria causes cholera?

The protist has an organelle called an apicoplast.From what organelle did the apicoplast evolve?

____ are dome-shaped structures composed of layers of early cells and sediments.

HIV affects

Two researchers suggested in the 1960s that ____ may have been the first informational molecule.

How does Plasmodium alter the behavior of the mosquito that carries it?

The first life-related and carbon-based molecule was synthesized in vitro by a German chemist.What was that molecule?

Which of the following is NOT a structural component of any virus?

Some bacteria in the deep oceans use iron as an energy source to make carbohydrates from carbon dioxide.These bacteria would be classified as

Which of the following nucleic acid elements is thought that viruses might have evolved from?

It is thought that viruses may have originated from cells because

How do viruses differ from all other microorganisms?

Red algae

Clay compounds were thought to be original sites for the formation of

Examine the figure above and answer the following question(s). -In the figure above,the viral DNA in the lysogenic pathway

Match the following letters with the number with which they best correspond. a.protist b.prokaryote c.photoautotroph d.pathogen e.protocell f.halophile g.antibiotic -weapon used against pathogenic bacteria

Metagenomic studies of prokaryotes have revealed that

Classification.Answer the questions using the five groups of protistans listed below. a.apicomplexans b.amoebas c.euglenoids d.dinoflagellates e.trypanosomes -Toxins from these can kill humans.

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Capturing and Releasing Energy

DNA Structure and Function

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Reproduction and Development

Plant Form and Function

Plant Reproduction and Development

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