Question 1

The "first cells" shown at the bottom of this illustration were most likely

Accepted Answer

A)  animals. 
B)  prokaryotes. 
C)  fungi. 
D)  protists. 
E)  plants. 
A)  animals. 
B)  prokaryotes. 
C)  fungi. 
D)  protists. 
E)  plants. B

Question 2

All scientific study begins with and the formation of testable hypotheses.

Accepted Answer

observations

Question 3

Of the following levels of organization, Archaea have

Accepted Answer

A)  atoms, molecules, and organs. 
B)  atoms and molecules. 
C)  molecules only. 
D)  atoms only. 
E)  organs only. 
A)  atoms, molecules, and organs. 
B)  atoms and molecules. 
C)  molecules only. 
D)  atoms only. 
E)  organs only. B

Question 4

Suppose you are testing a treatment for AIDS patients and find that 75% respond well, whereas 25% show no improvement or a decline in health. You should

Accepted Answer

A)  discontinue experimentation with this treatment because 25% of patients did not improve. 
B)  begin work on developing a new drug. 
C)  conclude that only 75% of AIDS patients should be treated. 
D)  review the results, modify the drug or the dosage, and repeat the experiment. 
E)  conclude that you have proven the effectiveness of the drug. 
A)  discontinue experimentation with this treatment because 25% of patients did not improve. 
B)  begin work on developing a new drug. 
C)  conclude that only 75% of AIDS patients should be treated. 
D)  review the results, modify the drug or the dosage, and repeat the experiment. 
E)  conclude that you have proven the effectiveness of the drug.

Question 5

All of the following are features of the scientific method EXCEPT

Accepted Answer

A)  supernatural causes. 
B)  repeatable by other scientists. 
C)  observation and experimentation. 
D)  deductive reasoning. 
E)  hypothesis formulation. 
A)  supernatural causes. 
B)  repeatable by other scientists. 
C)  observation and experimentation. 
D)  deductive reasoning. 
E)  hypothesis formulation.

Question 6

A basic difference between a prokaryotic cell and a eukaryotic cell is that the prokaryotic cell

Accepted Answer

A)  possesses membrane- bound organelles. 
B)  is considerably larger. 
C)  lacks a nucleus. 
D)  is structurally more complex. 
E)  lacks DNA. 
A)  possesses membrane- bound organelles. 
B)  is considerably larger. 
C)  lacks a nucleus. 
D)  is structurally more complex. 
E)  lacks DNA.

Question 7

Cells that contain a nucleus are eukaryotic, and cells without a nucleus are _ .

Accepted Answer

The answer of Cells that contain a nucleus are eukaryotic,...

Question 8

To test the effect of vitamin D on growth, two groups of rats were raised under identical conditions and fed the same diet. One of the groups received daily injections of vitamin D. The other group received injections of saline, which did not contain vitamin D. All the rats were weighed weekly for 2 months. In this experiment, the control was the

Accepted Answer

A)  group receiving vitamin D. 
B)  2- month period of time. 
C)  average weight gain of the rats. 
D)  group receiving saline. 
A)  group receiving vitamin D. 
B)  2- month period of time. 
C)  average weight gain of the rats. 
D)  group receiving saline.

Question 9

Why do heterotrophs require "food" for survival?

Accepted Answer

A)  Food provides the organic chemicals needed by heterotrophs. 
B)  Food is an alternative source of energy for heterotrophs when sunlight is unavailable. 
C)  Heterotrophs cannot photosynthesize without the chemicals provided by food. 
D)  Food provides at least half of the water required by heterotrophs. 
A)  Food provides the organic chemicals needed by heterotrophs. 
B)  Food is an alternative source of energy for heterotrophs when sunlight is unavailable. 
C)  Heterotrophs cannot photosynthesize without the chemicals provided by food. 
D)  Food provides at least half of the water required by heterotrophs.

Question 10

Prokaryotic cells have a true nucleus and eukaryotic cells do not.

Accepted Answer

A) True 
 B)False

Question 11

Photosynthetic bacteria are examples of autotrophs.

Accepted Answer

A) True 
 B)False

Question 12

Photosynthetic plants are considered "self- feeders," or .

Accepted Answer

The answer of Photosynthetic plants are considered "self- feeders," or...

Question 13

The basic unit of life is the .

Accepted Answer

The answer of The basic unit of life is the...

Question 14

Single- celled organisms that lack a nucleus belong to the domains Bacteria and _ _.

Accepted Answer

The answer of Single- celled organisms that lack a nucleus...

Question 15

Which group has prokaryotic individuals?

Accepted Answer

A)  Kingdom Fungi 
B)  Protist kingdoms 
C)  Kingdom Plantae 
D)  Domain Archaea 
E)  Kingdom Animalia 
A)  Kingdom Fungi 
B)  Protist kingdoms 
C)  Kingdom Plantae 
D)  Domain Archaea 
E)  Kingdom Animalia

Question 16

Which kingdom possesses unicellular animal- like species and unicellular plantlike species?

Accepted Answer

A)  Animalia 
B)  Plantae 
C)  Fungi 
D)  Protista 
A)  Animalia 
B)  Plantae 
C)  Fungi 
D)  Protista

Question 17

A 57- year- old woman was admitted to a hospital with an infected toe, and the infection was spreading rapidly. The damage was being caused by an unknown microorganism that could not be cultured in the lab. Doctors observed that antibiotics, which kill only prokaryotes, were ineffective. They suspected that the microbe was a fungus, so they tried the drug Amphotericin, which targets the ergosterols in fungal cells. Because animal cells contain cholesterols, not ergosterols, they are unaffected by the drug. Shortly after receiving Amphotericin, the p improved, her infection ceased, and she was released from the hospital. In this scenario, what was the hypothesis?

Accepted Answer

A)  The infection will spread rapidly. 
B)  Why didn't the antibiotics kill the microbe that caused the infection? 
C)  If the infection is caused by an animal, then Amphotericin will cure the patient. 
D)  A microbe that has cholesterol is causing the infection. 
E)  Antibiotics will not kill the microbe because it is a fungal species. 
A)  The infection will spread rapidly. 
B)  Why didn't the antibiotics kill the microbe that caused the infection? 
C)  If the infection is caused by an animal, then Amphotericin will cure the patient. 
D)  A microbe that has cholesterol is causing the infection. 
E)  Antibiotics will not kill the microbe because it is a fungal species.

Question 18

A group of similar, interbreeding individuals that live in the same area is a(n) _ _.

Accepted Answer

The answer of A group of similar, interbreeding individuals that...

Question 19

A hypothesis is typically stated as an "If . . . then" statement.

Accepted Answer

A) True 
 B)False

Question 20

The three natural processes that underlie evolution are genetic variation, inheritance, and .

Accepted Answer

The answer of The three natural processes that underlie evolution...

Exam 1: An Introduction to Life on Earth

The "first cells" shown at the bottom of this illustration were most likely

All scientific study begins with and the formation of testable hypotheses.

Of the following levels of organization, Archaea have

Suppose you are testing a treatment for AIDS patients and find that 75% respond well, whereas 25% show no improvement or a decline in health. You should

All of the following are features of the scientific method EXCEPT

A basic difference between a prokaryotic cell and a eukaryotic cell is that the prokaryotic cell

Cells that contain a nucleus are eukaryotic, and cells without a nucleus are _ .

Why do heterotrophs require "food" for survival?

Prokaryotic cells have a true nucleus and eukaryotic cells do not.

Photosynthetic bacteria are examples of autotrophs.

Photosynthetic plants are considered "self- feeders," or .

The basic unit of life is the .

Single- celled organisms that lack a nucleus belong to the domains Bacteria and _ _.

Which group has prokaryotic individuals?

Which kingdom possesses unicellular animal- like species and unicellular plantlike species?

A group of similar, interbreeding individuals that live in the same area is a(n) _ _.

A hypothesis is typically stated as an "If . . . then" statement.

The three natural processes that underlie evolution are genetic variation, inheritance, and .

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity II: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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