Question 1

Which of the following allow the bacteria to join together to transfer genes?

Accepted Answer

A)  flagella 
B)  spores 
C)  capsules 
D)  pili 
E)  cilia 
A)  flagella 
B)  spores 
C)  capsules 
D)  pili 
E)  cilia

Question 2

Selecting the Exception Four of the five answers listed below are related by a common association. Select the EXCEPTION.

Accepted Answer

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

Question 3

Which of the following obtain energy from light and carbon from organic sources?
A) photoautotrophs
B) chemoautotrophs
C) photoheterotrophs
D) photoautotrophs
E) more than one of these

Accepted Answer

The answer of Which of the following obtain energy from...

Question 4

Scientific evidences suggest that oxygen gas appeared on 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 5

The first fossils of animals date back to approximately ___ million years ago.

Accepted Answer

A)  370 
B)  420 
C)  470 
D)  520 
E)  570 
A)  370 
B)  420 
C)  470 
D)  520 
E)  570

Question 6

Match between columns
                        Premises: thrives in high salt conditions
most likely the first eukaryotes
disease-causing agent
membranous sac that contains interacting organic molecules
cell with no membrane bound nucleus
weapon used against pathogenic bacteria
makes its own carbohydrates

Accepted Answer

The Answer of halophile and protocell and pathogen and photoautotroph is...

Question 7

Why is it unlikely that DNA was NOT the first self-replicating molecule of life?

Accepted Answer

A)  nitrogen is essential for constructing DNA and there was no nitrogen on early Earth 
B)  DNA is hyper-sensitive to oxygen and would have disassembled quickly in its presence 
C)  DNA requires proteins like DNA polymerase for assembly so it doesn't truly "self-replicate" 
D)  it must have RNA to self-replicate and RNA evolved much later in life's history 
E)  more than one of these is correct 
A)  nitrogen is essential for constructing DNA and there was no nitrogen on early Earth 
B)  DNA is hyper-sensitive to oxygen and would have disassembled quickly in its presence 
C)  DNA requires proteins like DNA polymerase for assembly so it doesn't truly "self-replicate" 
D)  it must have RNA to self-replicate and RNA evolved much later in life's history 
E)  more than one of these is correct

Question 8

Which of the following 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 9

Plasmodium is

Accepted Answer

A)  an apicomplexan. 
B)  a diatom. 
C)  a ciliate. 
D)  a dinoflagellate. 
E)  a flagellated protozoan. 
A)  an apicomplexan. 
B)  a diatom. 
C)  a ciliate. 
D)  a dinoflagellate. 
E)  a flagellated protozoan.

Question 10

Match between columns
                        Premises: share a common ancestor with green plants
move by pseudopods
multicelled protist able to live in deep ocean water
cause of malaria
cause of red tide
virus that infects bacteria

Accepted Answer

The Answer of red algae and bacteriophage and amoebas and is...

Question 11

Where does sexual reproduction of malaria-causing Plasmodium take place?

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 12

Which of the following do anaerobic methanogens produce?

Accepted Answer

A)  carbon monoxide 
B)  carbon dioxide 
C)  ammonia sulfide 
D)  methane 
E)  hydrogen sulfide 
A)  carbon monoxide 
B)  carbon dioxide 
C)  ammonia sulfide 
D)  methane 
E)  hydrogen sulfide

Question 13

The bacterium E. coli

Accepted Answer

A)  is a normal inhabitant of the mammalian gut. 
B)  has some mutant strains that produce toxins and cause disease. 
C)  is grown in laboratories around the world. 
D)  produces vitamin K. 
E)  has all of these characteristics. 
A)  is a normal inhabitant of the mammalian gut. 
B)  has some mutant strains that produce toxins and cause disease. 
C)  is grown in laboratories around the world. 
D)  produces vitamin K. 
E)  has all of these characteristics.

Question 14

____ must have been the first eukaryotic cells.

Accepted Answer

A)  Archaea 
B)  Bacteria 
C)  Protists 
D)  Fungi 
E)  Microplants 
A)  Archaea 
B)  Bacteria 
C)  Protists 
D)  Fungi 
E)  Microplants

Question 15

Both mitochondria and chloroplasts are thought to have evolved by the process of

Accepted Answer

A)  endosymbiosis. 
B)  sexual selection. 
C)  allopatric speciation. 
D)  sympatric speciation. 
E)  more than one of these. 
A)  endosymbiosis. 
B)  sexual selection. 
C)  allopatric speciation. 
D)  sympatric speciation. 
E)  more than one of these.

Question 16

What is (are) the function(s) of bacterial pili?

Accepted Answer

A)  organization of the nuclear material 
B)  assisting in protein synthesis 
C)  energy production 
D)  locomotion 
E)  cell membrane construction 
A)  organization of the nuclear material 
B)  assisting in protein synthesis 
C)  energy production 
D)  locomotion 
E)  cell membrane construction

Question 17

AIDS kills about ____ million people each year.

Accepted Answer

A)  2,000 
B)  20,000 
C)  200,000 
D)  2,000,000 
E)  2,000,000,000 
A)  2,000 
B)  20,000 
C)  200,000 
D)  2,000,000 
E)  2,000,000,000

Question 18

Which of the following statements most likely apply to the earliest cells?

Accepted Answer

A)  They were prokaryotic cells. 
B)  It is likely that earliest cells did not have a nucleus but had membrane-bound organelles. 
C)  The earliest cells may have used oxygen gas in order to thrive successfully. 
D)  Energy from the sun may have been used by the earliest cells. 
E)  All of these statements most likely apply. 
A)  They were prokaryotic cells. 
B)  It is likely that earliest cells did not have a nucleus but had membrane-bound organelles. 
C)  The earliest cells may have used oxygen gas in order to thrive successfully. 
D)  Energy from the sun may have been used by the earliest cells. 
E)  All of these statements most likely apply.

Question 19

What evidence suggests when oxygen gas first became a significant part of Earth's atmosphere?

Accepted Answer

A)  multi-celled microorganisms that breathed oxygen 
B)  fossils of dinosaurs 
C)  molten rock from volcanoes that were rich in oxygen 
D)  rusty rocks indicating oxidized iron 
E)  the presence of water vapor in the atmosphere 
A)  multi-celled microorganisms that breathed oxygen 
B)  fossils of dinosaurs 
C)  molten rock from volcanoes that were rich in oxygen 
D)  rusty rocks indicating oxidized iron 
E)  the presence of water vapor in the atmosphere

Question 20

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

Exam 13: Early Life Forms and the Viruses

Which of the following allow the bacteria to join together to transfer genes?

Selecting the Exception Four of the five answers listed below are related by a common association. Select the EXCEPTION.

Which of the following obtain energy from light and carbon from organic sources? A) photoautotrophs B) chemoautotrophs C) photoheterotrophs D) photoautotrophs E) more than one of these

Scientific evidences suggest that oxygen gas appeared on earth about ____ years ago.

The first fossils of animals date back to approximately ___ million years ago.

Why is it unlikely that DNA was NOT the first self-replicating molecule of life?

Which of the following aspects is NOT characteristic of diatoms?

Plasmodium is

Where does sexual reproduction of malaria-causing Plasmodium take place?

Which of the following do anaerobic methanogens produce?

The bacterium E. coli

____ must have been the first eukaryotic cells.

Both mitochondria and chloroplasts are thought to have evolved by the process of

What is (are) the function(s) of bacterial pili?

AIDS kills about ____ million people each year.

Which of the following statements most likely apply to the earliest cells?

What evidence suggests when oxygen gas first became a significant part of Earth's atmosphere?

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

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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