Question 1

Photosynthetic organisms using thoxygen-releasing pathway appeareon earth about __________ billion years ago.

Accepted Answer

A) 1.3 
B) 1.8 
C) 2.3 
D) 2.7 
E) 3.8 
A) 1.3 
B) 1.8 
C) 2.3 
D) 2.7 
E) 3.8

Question 2

Worldwide, about __________ million peoplarinfectewith HIV.

Accepted Answer

A) 9 
B) 19 
C) 29 
D) 39 
E) 49 
A) 9 
B) 19 
C) 29 
D) 39 
E) 49

Question 3

Microorganisms may possibly adapt to which of thfollowing conditions?

Accepted Answer

A) selective pressures exerted by chemicals 
B) high temperatures 
C) extremely low temperatures 
D) extremely dry and hot seasons 
E) all of these 
A) selective pressures exerted by chemicals 
B) high temperatures 
C) extremely low temperatures 
D) extremely dry and hot seasons 
E) all of these

Question 4

Therarseveral evidences that RNA may have

Accepted Answer

A) carried genetic information. 
B) contained some enzymatic activity. 
C) been the precursor of polysaccharides. 
D) carried both genetic information and some enzymatic activity. 
E) carried genetic information, some enzymatic activity, and been the precursor of polysaccharides. 
A) carried genetic information. 
B) contained some enzymatic activity. 
C) been the precursor of polysaccharides. 
D) carried both genetic information and some enzymatic activity. 
E) carried genetic information, some enzymatic activity, and been the precursor of polysaccharides.

Question 5

Bacteria

Accepted Answer

A) have cell walls composed of cellulose. 
B) reproduce primarily sexually. 
C) have a single chromosome. 
D) are eukaryotes. 
E) have a distinct nucleus. 
A) have cell walls composed of cellulose. 
B) reproduce primarily sexually. 
C) have a single chromosome. 
D) are eukaryotes. 
E) have a distinct nucleus.

Question 6

Flagella allow bacteria to movarounby

Accepted Answer

A) adopting a wipe-like motion. 
B) vibrating. 
C) rotating like wheels. 
D) moving forth and back. 
E) all of these means. 
A) adopting a wipe-like motion. 
B) vibrating. 
C) rotating like wheels. 
D) moving forth and back. 
E) all of these means.

Question 7

Early photosynthetic organisms dinot produce

Accepted Answer

A) sugars. 
B) oxygen. 
C) lipids. 
D) proteins. 
E) nucleotides. 
A) sugars. 
B) oxygen. 
C) lipids. 
D) proteins. 
E) nucleotides.

Question 8

Water molds arclassifieas

Accepted Answer

A) protozoans. 
B) fungi. 
C) protists. 
D) protozoans and protists. 
E) protozoans, fungi, and protists. 
A) protozoans. 
B) fungi. 
C) protists. 
D) protozoans and protists. 
E) protozoans, fungi, and protists.

Question 9

According to scientific evidences, many organic compounds essential for lifcoulNOT foranpersist in thpresencof

Accepted Answer

A) methane gas. 
B) hydrogen gas. 
C) oxygen gas. 
D) water vapor. 
E) carbon dioxide. 
A) methane gas. 
B) hydrogen gas. 
C) oxygen gas. 
D) water vapor. 
E) carbon dioxide.

Question 10

Which of thfollowing organisms causmalaria?

Accepted Answer

A) butterflies 
B) mosquitoes 
C) flies 
D) wasps 
E) Plasmodium 
A) butterflies 
B) mosquitoes 
C) flies 
D) wasps 
E) Plasmodium

Question 11

Which of thfollowing components was NOT part of thearth's early atmosphere?

Accepted Answer

A) carbon dioxide 
B) water vapor 
C) nitrogen 
D) oxygen gas 
E) hydrogen gas 
A) carbon dioxide 
B) water vapor 
C) nitrogen 
D) oxygen gas 
E) hydrogen gas

Question 12

__________ ardome-shapestructures composeof layers of early cells ansediments.

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 13

Scientific evidences suggest that oxygen gas appeareon earth about __________ years ago.

Accepted Answer

A) 38,000,000,000 
B) 25,000,000,000 
C) 2,300,000,000 
D) 380,000,000 
E) 4,500,000 
A) 38,000,000,000 
B) 25,000,000,000 
C) 2,300,000,000 
D) 380,000,000 
E) 4,500,000

Question 14

Which of thfollowing is NOT truof protists?

Accepted Answer

A) They may reproduce sexually. 
B) They may reproduce asexually. 
C) Their genetic material is gathered in a region of the cell called the nucleoid. 
D) Most protists are unicellular organisms, but some are multicelled species. 
E) Some protists are photoautotrophs. 
A) They may reproduce sexually. 
B) They may reproduce asexually. 
C) Their genetic material is gathered in a region of the cell called the nucleoid. 
D) Most protists are unicellular organisms, but some are multicelled species. 
E) Some protists are photoautotrophs.

Question 15

Escherichia coli Xl1-BluanEscherichia coli O157:H7 arexamples of bacterial

Accepted Answer

A) divisions. 
B) strains. 
C) families. 
D) species. 
E) phyla. 
A) divisions. 
B) strains. 
C) families. 
D) species. 
E) phyla.

Question 16

Increasin thpopulation of photosynthetic bacteria using thoxygen-releasing pathway leto an increasin thoxygen levels in thseas anair.What was (were) thmajor consequence(s) of that change?
I.aerobic respiration becamthmajor modof life
II.no morself-assembly of complex molecules of life
III.formation of ozonlayer

Accepted Answer

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

Question 17

Experiments likthosperformeby Stanley Miller in th1850s demonstrated

Accepted Answer

A) that DNA forms readily and produces itself. 
B) that many of the organic compounds required for life can form under abiotic conditions. 
C) that complete, functioning prokaryotic cells are formed after approximately three months. 
D) that a lipid-protein film will eventually be formed by thermal convection. 
E) by all of these. 
A) that DNA forms readily and produces itself. 
B) that many of the organic compounds required for life can form under abiotic conditions. 
C) that complete, functioning prokaryotic cells are formed after approximately three months. 
D) that a lipid-protein film will eventually be formed by thermal convection. 
E) by all of these.

Question 18

What forof Plasmodiuproduces merozoites?

Accepted Answer

A) merozoites 
B) gametocytes 
C) cysts 
D) sporozoites 
E) spores 
A) merozoites 
B) gametocytes 
C) cysts 
D) sporozoites 
E) spores

Question 19

Malaria is likely to bendemic in

Accepted Answer

A) Russia. 
B) North China. 
C) Gabon. 
D) Belgium. 
E) New York state. 
A) Russia. 
B) North China. 
C) Gabon. 
D) Belgium. 
E) New York state.

Question 20

Which of thfollowing statements about viruses is TRUE?

Accepted Answer

A) They were the first form of life to evolve. 
B) They do not attack plants. 
C) They are able to reproduce without using other organisms. 
D) They are made of protein only. 
E) They include some forms that are able to attack bacteria. 
A) They were the first form of life to evolve. 
B) They do not attack plants. 
C) They are able to reproduce without using other organisms. 
D) They are made of protein only. 
E) They include some forms that are able to attack bacteria.

Exam 13: Early Life Forms and the Viruses

Photosynthetic organisms using thoxygen-releasing pathway appeareon earth about __________ billion years ago.

Worldwide, about __________ million peoplarinfectewith HIV.

Microorganisms may possibly adapt to which of thfollowing conditions?

Therarseveral evidences that RNA may have

Bacteria

Flagella allow bacteria to movarounby

Early photosynthetic organisms dinot produce

Water molds arclassifieas

According to scientific evidences, many organic compounds essential for lifcoulNOT foranpersist in thpresencof

Which of thfollowing organisms causmalaria?

Which of thfollowing components was NOT part of thearth's early atmosphere?

__________ ardome-shapestructures composeof layers of early cells ansediments.

Scientific evidences suggest that oxygen gas appeareon earth about __________ years ago.

Which of thfollowing is NOT truof protists?

Escherichia coli Xl1-BluanEscherichia coli O157:H7 arexamples of bacterial

Experiments likthosperformeby Stanley Miller in th1850s demonstrated

What forof Plasmodiuproduces merozoites?

Malaria is likely to bendemic in

Which of thfollowing statements about viruses is TRUE?

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

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