Question 1

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 2

Photosynthetic bacteria are examples of autotrophs.

Accepted Answer

A) True 
 B)False

Question 3

The scientific method includes all of the following EXCEPT

Accepted Answer

A)  experimentation. 
B)  conclusions. 
C)  an observation. 
D)  a hypothesis. 
E)  a testable theory. 
A)  experimentation. 
B)  conclusions. 
C)  an observation. 
D)  a hypothesis. 
E)  a testable theory.

Question 4

The smallest units that still retain the characteristics of an element are called

Accepted Answer

A)  cells. 
B)  organic molecules. 
C)  atoms. 
D)  tissues. 
E)  molecules. 
A)  cells. 
B)  organic molecules. 
C)  atoms. 
D)  tissues. 
E)  molecules.

Question 5

A scientific theory

Accepted Answer

A)  is an educated guess. 
B)  will never be changed. 
C)  is less reliable than a hypothesis. 
D)  is a general explanation for natural phenomena. 
A)  is an educated guess. 
B)  will never be changed. 
C)  is less reliable than a hypothesis. 
D)  is a general explanation for natural phenomena.

Question 6

Why do heterotrophs require ʺfoodʺ for survival?

Accepted Answer

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

Question 7

For the following question(s), choose the characteristic of a living organism that best corresponds to each statement. Selections may be used once, more than once, or not at all.
-A puppy is born weighing 5 pounds and eventually becomes a 75-pound golden retriever.

Accepted Answer

A) 	Response to stimuli 
B) 	Reproduction 
C) 	Growth 
D) 	Evolution 
A) 	Response to stimuli 
B) 	Reproduction 
C) 	Growth 
D) 	Evolution

Question 8

Suppose an organism has an enzyme that repairs changes in its DNA. The result is a decrease in mutations. This trait would definitely influence the organismʹs ability to

Accepted Answer

A)  move. 
B)  maintain homeostasis. 
C)  evolve. 
D)  obtain energy. 
A)  move. 
B)  maintain homeostasis. 
C)  evolve. 
D)  obtain energy.

Question 9

Using its antennae, the male moth finds female moths by following a trail of airborne chemicals, called pheromones, upwind from the female producing them. This is an example of how living things

Accepted Answer

A)  maintain precise internal conditions. 
B)  acquire nutrients. 
C)  detect and respond to stimuli. 
D)  grow. 
E)  reproduce. 
A)  maintain precise internal conditions. 
B)  acquire nutrients. 
C)  detect and respond to stimuli. 
D)  grow. 
E)  reproduce.

Question 10

Chromosomes are made of

Accepted Answer

A)  proteins. 
B)  DNA. 
C)  DNA and proteins. 
D)  carbohydrates. 
E)  cells. 
A)  proteins. 
B)  DNA. 
C)  DNA and proteins. 
D)  carbohydrates. 
E)  cells.

Question 11

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

Accepted Answer

The answer of All scientific study begins with_________ and the...

Question 12

Science cannot answer certain faith-based questions because

Accepted Answer

A)  scientists are not able to study human behavior. 
B)  faith-based beliefs are impossible to either prove or disprove. 
C)  there arenʹt enough variables. 
D)  faith requires deductive reasoning. 
A)  scientists are not able to study human behavior. 
B)  faith-based beliefs are impossible to either prove or disprove. 
C)  there arenʹt enough variables. 
D)  faith requires deductive reasoning.

Question 13

For the following question(s), choose the characteristic of a living organism that best corresponds to each statement. Selections may be used once, more than once, or not at all.
-A sunflower follows the sun as it moves across the sky during the period of a single day.

Accepted Answer

A) 	Response to stimuli 
B) 	Reproduction 
C) 	Growth 
D) 	Evolution 
A) 	Response to stimuli 
B) 	Reproduction 
C) 	Growth 
D) 	Evolution

Question 14

Why do humans born without sweat glands usually not survive?

Accepted Answer

A)  Sweating is important for eliminating impurities from the body. 
B)  Sweat glands create openings in the skin where gas exchange occurs. 
C)  Sweating is the only way the body eliminates excess water. 
D)  Sweating is an important mechanism for maintaining the correct body temperature. 
A)  Sweating is important for eliminating impurities from the body. 
B)  Sweat glands create openings in the skin where gas exchange occurs. 
C)  Sweating is the only way the body eliminates excess water. 
D)  Sweating is an important mechanism for maintaining the correct body temperature.

Question 15

After you drink a glass of acidic lemonade, your bodyʹs pH does not change. This is an example of how humans and other organisms

Accepted Answer

A)  evolve in response to the environment. 
B)  maintain cellular organization. 
C)  are immune to weak acids. 
D)  maintain precise internal conditions through homeostasis. 
A)  evolve in response to the environment. 
B)  maintain cellular organization. 
C)  are immune to weak acids. 
D)  maintain precise internal conditions through homeostasis.

Question 16

The variation among individuals, on which natural selection acts, describes

Accepted Answer

A)  genetic differences. 
B)  physical training and exercise. 
C)  nutritional differences. 
D)  random occurrences in the lifetimes of individuals. 
A)  genetic differences. 
B)  physical training and exercise. 
C)  nutritional differences. 
D)  random occurrences in the lifetimes of individuals.

Question 17

Alexander Fleming observed a colony of mold that inhibited the growth of nearby bacteria. What was the hypothesis proposed by Fleming to explain this result?

Accepted Answer

A)  The bacteria changed their DNA when growing near the mold. 
B)  The mold used all of the nutrients so that the bacteria couldnʹt grow. 
C)  The mold produced a substance that killed nearby bacteria. 
D)  The mold was dead. 
A)  The bacteria changed their DNA when growing near the mold. 
B)  The mold used all of the nutrients so that the bacteria couldnʹt grow. 
C)  The mold produced a substance that killed nearby bacteria. 
D)  The mold was dead.

Question 18

A mutation is a

Accepted Answer

A)  dose of radiation. 
B)  physical deformity, such as the loss of a limb. 
C)  defective egg or sperm cell. 
D)  change in the DNA sequence. 
A)  dose of radiation. 
B)  physical deformity, such as the loss of a limb. 
C)  defective egg or sperm cell. 
D)  change in the DNA sequence.

Question 19

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

Question 20

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 patient improved, her infection ceased, and she was released from the hospital. In this scenario, what was the hypothesis?

Accepted Answer

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

Exam 1: An Introduction to Life on Earth

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

Photosynthetic bacteria are examples of autotrophs.

The scientific method includes all of the following EXCEPT

The smallest units that still retain the characteristics of an element are called

A scientific theory

Why do heterotrophs require ʺfoodʺ for survival?

For the following question(s), choose the characteristic of a living organism that best corresponds to each statement. Selections may be used once, more than once, or not at all. -A puppy is born weighing 5 pounds and eventually becomes a 75-pound golden retriever.

Suppose an organism has an enzyme that repairs changes in its DNA. The result is a decrease in mutations. This trait would definitely influence the organismʹs ability to

Using its antennae, the male moth finds female moths by following a trail of airborne chemicals, called pheromones, upwind from the female producing them. This is an example of how living things

Chromosomes are made of

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

Science cannot answer certain faith-based questions because

For the following question(s), choose the characteristic of a living organism that best corresponds to each statement. Selections may be used once, more than once, or not at all. -A sunflower follows the sun as it moves across the sky during the period of a single day.

Why do humans born without sweat glands usually not survive?

After you drink a glass of acidic lemonade, your bodyʹs pH does not change. This is an example of how humans and other organisms

The variation among individuals, on which natural selection acts, describes

Alexander Fleming observed a colony of mold that inhibited the growth of nearby bacteria. What was the hypothesis proposed by Fleming to explain this result?

A mutation is a

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

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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