Question 1

Which of thfollowing scientists demonstratefor thfirst timthat molecules of lifcoulhavcomfrononliving entities (gases, water, anspark discharge)?

Accepted Answer

A) Leeuwenhoek 
B) Aristotle 
C) Miller 
D) Fleming 
E) Avogadro 
A) Leeuwenhoek 
B) Aristotle 
C) Miller 
D) Fleming 
E) Avogadro

Question 2

HIV contains __________ as its genetic material.

Accepted Answer

A) guanine 
B) DNA 
C) adenine 
D) RNA 
E) cytosine 
A) guanine 
B) DNA 
C) adenine 
D) RNA 
E) cytosine

Question 3

HIV may affect

Accepted Answer

A) the human reproductive system. 
B) the human circulatory system. 
C) the human respiratory system. 
D) the human immune system. 
E) all of these. 
A) the human reproductive system. 
B) the human circulatory system. 
C) the human respiratory system. 
D) the human immune system. 
E) all of these.

Question 4

Four of thfivanswers listebelow armembers of thsamgroup.Select thEXCEPTION.

Accepted Answer

A) amoeba 
B) clostridium 
C) euglena 
D) Trypanosoma 
E) Giardia 
A) amoeba 
B) clostridium 
C) euglena 
D) Trypanosoma 
E) Giardia

Question 5

Two researchers suggestein th1960s that __________ may havbeen thfirst 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 6

Wherdo sporozoites develop into merozoites?

Accepted Answer

A) in the gut of a female mosquito 
B) in the liver 
C) in the mosquito salivary glands 
D) inside white blood cells 
E) inside red blood cells 
A) in the gut of a female mosquito 
B) in the liver 
C) in the mosquito salivary glands 
D) inside white blood cells 
E) inside red blood cells

Question 7

Stromatolites appeareabout __________ years ago.

Accepted Answer

A) 6,000 
B) 1,000,000 
C) 250,000,000,000 
D) 3,500,000,000 
E) 50,000,000,000 
A) 6,000 
B) 1,000,000 
C) 250,000,000,000 
D) 3,500,000,000 
E) 50,000,000,000

Question 8

Thprimitivtemplatthat was thought to busefor forming chains that resemblproteins or nucleic acids was

Accepted Answer

A) stratified mica crystals. 
B) clay compounds. 
C) the bottom of tidal pools. 
D) dried-out mud flats. 
E) pockets in lava beds. 
A) stratified mica crystals. 
B) clay compounds. 
C) the bottom of tidal pools. 
D) dried-out mud flats. 
E) pockets in lava beds.

Question 9

Which of thfollowing protists may causdysentery after drinking contaminatewater?

Accepted Answer

A) dinoflagellates 
B) apicomplexans 
C) amoebas 
D) ciliates 
E) all of these 
A) dinoflagellates 
B) apicomplexans 
C) amoebas 
D) ciliates 
E) all of these

Question 10

Four of thfivanswers listebelow arrelateby a common association.Select thEXCEPTION.

Accepted Answer

A) archaea 
B) methanogens 
C) cyanobacteria 
D) halophiles 
E) thermophiles 
A) archaea 
B) methanogens 
C) cyanobacteria 
D) halophiles 
E) thermophiles

Question 11

Which of thfollowing aspects is NOT characteristic of diatoms?

Accepted Answer

A) overlapping shell 
B) live in fresh water and cool seas 
C) silica composition 
D) flagella 
E) photosynthetic 
A) overlapping shell 
B) live in fresh water and cool seas 
C) silica composition 
D) flagella 
E) photosynthetic

Question 12

A hypothesis of thorigin of molecules of lifis that thesmolecules werformed

Accepted Answer

A) by meteorites which delivered them to earth. 
B) in interstellar clouds of ice, dust, and gases and were delivered to earth by meteorites. 
C) in interstellar clouds of ice, dust, and gases, including oxygen, and were delivered to earth by meteorites. 
D) in supernova clouds of ice, dust, and gases, including oxygen, and were delivered to earth by asteroids. 
E) from hydrogen, carbon dioxide, oxygen, and nitrogen gases in a supernova and were delivered to earth by comets. 
A) by meteorites which delivered them to earth. 
B) in interstellar clouds of ice, dust, and gases and were delivered to earth by meteorites. 
C) in interstellar clouds of ice, dust, and gases, including oxygen, and were delivered to earth by meteorites. 
D) in supernova clouds of ice, dust, and gases, including oxygen, and were delivered to earth by asteroids. 
E) from hydrogen, carbon dioxide, oxygen, and nitrogen gases in a supernova and were delivered to earth by comets.

Question 13

Malaria is still common in which of thfollowing geographical areas?

Accepted Answer

A) Central Africa 
B) Central America 
C) Pacific Islands 
D) all of these 
E) Central Africa and Central America only 
A) Central Africa 
B) Central America 
C) Pacific Islands 
D) all of these 
E) Central Africa and Central America only

Question 14

Four of thfivanswers listebelow arbacteria structures.Select thEXCEPTION.

Accepted Answer

A) cell wall 
B) pili 
C) flagella 
D) cilia 
E) plasmid 
A) cell wall 
B) pili 
C) flagella 
D) cilia 
E) plasmid

Question 15

Thprocess by which onbacterial cell transfers DNA to another is

Accepted Answer

A) fission. 
B) gametic fusion. 
C) conjugation. 
D) lysis. 
E) none of these. 
A) fission. 
B) gametic fusion. 
C) conjugation. 
D) lysis. 
E) none of these.

Question 16

Mitochondria anchloroplasts arthought to bendosymbionts because

Accepted Answer

A) they both carry pieces of genetic information and are structurally similar to bacteria. 
B) they are both able to thrive independently if taken out of their host. 
C) they both contain machineries for moving around and to escape adverse conditions. 
D) they both contain plasmids that provide them the capacity to breakdown some carbon-based compounds. 
E) of all of these. 
A) they both carry pieces of genetic information and are structurally similar to bacteria. 
B) they are both able to thrive independently if taken out of their host. 
C) they both contain machineries for moving around and to escape adverse conditions. 
D) they both contain plasmids that provide them the capacity to breakdown some carbon-based compounds. 
E) of all of these.

Question 17

Thearly atmosphere

Accepted Answer

A) was essentially the same as occurs now. 
B) was changed drastically by the liberation of oxygen following the evolution of photosynthesis. 
C) was characterized by high concentrations of oxygen and ozone. 
D) was characterized by high concentrations of inert gases before the evolution of living organisms. 
E) was so dense that life could not evolve. 
A) was essentially the same as occurs now. 
B) was changed drastically by the liberation of oxygen following the evolution of photosynthesis. 
C) was characterized by high concentrations of oxygen and ozone. 
D) was characterized by high concentrations of inert gases before the evolution of living organisms. 
E) was so dense that life could not evolve.

Question 18

What was thprobablsourcof gases constituting thearly atmosphere?

Accepted Answer

A) other planets orbiting the sun but close enough to the early earth 
B) meteorites 
C) volcanoes 
D) stromatolites 
E) comets 
A) other planets orbiting the sun but close enough to the early earth 
B) meteorites 
C) volcanoes 
D) stromatolites 
E) comets

Question 19

Which of thfollowing statements is NOT correct about HIV?

Accepted Answer

A) HIV is able to successfully infect white blood cells and multiply therein. 
B) The human immune system is likely to be weakened by infection with HIV. 
C) HIV infection may affect the reproductive system of humans. 
D) Worldwide, about 20 million people have died from HIV infection. 
E) Worldwide, only a small proportion of infected people have access to HIV drugs. 
A) HIV is able to successfully infect white blood cells and multiply therein. 
B) The human immune system is likely to be weakened by infection with HIV. 
C) HIV infection may affect the reproductive system of humans. 
D) Worldwide, about 20 million people have died from HIV infection. 
E) Worldwide, only a small proportion of infected people have access to HIV drugs.

Question 20

Wherdo merozoites develop into gametes?

Accepted Answer

A) in the gut of a female mosquito 
B) in the gut of a male mosquito 
C) in the mosquito salivary glands 
D) inside white blood cells 
E) inside red blood cells 
A) in the gut of a female mosquito 
B) in the gut of a male mosquito 
C) in the mosquito salivary glands 
D) inside white blood cells 
E) inside red blood cells

Exam 13: Early Life Forms and the Viruses

Which of thfollowing scientists demonstratefor thfirst timthat molecules of lifcoulhavcomfrononliving entities (gases, water, anspark discharge)?

HIV contains __________ as its genetic material.

HIV may affect

Four of thfivanswers listebelow armembers of thsamgroup.Select thEXCEPTION.

Two researchers suggestein th1960s that __________ may havbeen thfirst informational molecule.

Wherdo sporozoites develop into merozoites?

Stromatolites appeareabout __________ years ago.

Thprimitivtemplatthat was thought to busefor forming chains that resemblproteins or nucleic acids was

Which of thfollowing protists may causdysentery after drinking contaminatewater?

Four of thfivanswers listebelow arrelateby a common association.Select thEXCEPTION.

Which of thfollowing aspects is NOT characteristic of diatoms?

A hypothesis of thorigin of molecules of lifis that thesmolecules werformed

Malaria is still common in which of thfollowing geographical areas?

Four of thfivanswers listebelow arbacteria structures.Select thEXCEPTION.

Thprocess by which onbacterial cell transfers DNA to another is

Mitochondria anchloroplasts arthought to bendosymbionts because

Thearly atmosphere

What was thprobablsourcof gases constituting thearly atmosphere?

Which of thfollowing statements is NOT correct about HIV?

Wherdo merozoites develop into gametes?

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 Evolutionunit

Population Ecology

Communities and Ecosystems

The Biosphere and Human Eff Ects

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

Filters