Question 1

DNA nucleotides include ________.

Accepted Answer

A)  uracil, guanine, adenine, and cytosine 
B)  thymine, guanine, adenine, and cytosine 
C)  thymine, uracil, adenine, and cytosine 
D)  thymine, guanine, adenine, and uracil 
A)  uracil, guanine, adenine, and cytosine 
B)  thymine, guanine, adenine, and cytosine 
C)  thymine, uracil, adenine, and cytosine 
D)  thymine, guanine, adenine, and uracil B

Question 2

Please read the following scenario to answer the following questions.
Cooking oils, such as olive oil, are largely made up of unsaturated fats. If you have ever heated cooking oil in a pan, you might have noticed that eventually the oil begins to smoke. The temperature when this occurs is called the "smoke point." At the smoke point, the fatty acids and glycerol molecules that make up the unsaturated fats in the oil begin to break down and form smoke. Different oils have different smoke points, and these smoke points depend on the molecular composition of the oils. Below is a table with data for four different types of cooking oils, including their smoke points (values are for 1 tablespoon each [15 ml]).
  
-Which of the following statements about the data in the table is TRUE?

Accepted Answer

A)  Saturated fat content and smoke point are positively correlated (related to one another). 
B)  There is a negative (inverse) correlation between unsaturated fat content and smoke point. 
C)  You can use the saturated fat content of an oil to reliably predict the smoke point of an oil. 
D)  Unsaturated fat content and smoke point are not correlated. 
A)  Saturated fat content and smoke point are positively correlated (related to one another). 
B)  There is a negative (inverse) correlation between unsaturated fat content and smoke point. 
C)  You can use the saturated fat content of an oil to reliably predict the smoke point of an oil. 
D)  Unsaturated fat content and smoke point are not correlated. D

Question 3

If one strand of a DNA double helix has the sequence AGTACTG,what will be the sequence of the other strand?

Accepted Answer

A)  GACGTCA 
B)  AGTACTG 
C)  GTCATGA 
D)  TCATGAC 
A)  GACGTCA 
B)  AGTACTG 
C)  GTCATGA 
D)  TCATGAC D

Question 4

Which of the following is TRUE with regard to a DNA molecule?

Accepted Answer

A)  The amount of adenine is equal to the amount of guanine, and the amount of thymine is equal to the amount of cytosine. 
B)  The amount of adenine is equal to the amount of cytosine, and the amount of guanine is equal to the amount of thymine. 
C)  The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of uracil. 
D)  The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine. 
A)  The amount of adenine is equal to the amount of guanine, and the amount of thymine is equal to the amount of cytosine. 
B)  The amount of adenine is equal to the amount of cytosine, and the amount of guanine is equal to the amount of thymine. 
C)  The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of uracil. 
D)  The amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine.

Question 5

Proteins are polymers constructed from ________ monomers.

Accepted Answer

A)  hydrocarbon 
B)  amino acid 
C)  nucleotide 
D)  fatty acid 
A)  hydrocarbon 
B)  amino acid 
C)  nucleotide 
D)  fatty acid

Question 6

________ is a steroid.

Accepted Answer

A)  Butter 
B)  Sucrose 
C)  Amino acid 
D)  Estrogen 
A)  Butter 
B)  Sucrose 
C)  Amino acid 
D)  Estrogen

Question 7

Please read the following scenario to answer the following questions.
While shopping, you settle on two types of cookies. The nutritional label for the chocolate mint cookies lists 5 grams of saturated fat, 0 grams of trans fat, 22 grams of carbohydrates, and 11 grams of protein per serving. The nutritional label for the peanut butter cookies lists 0 grams of saturated fat, 5 grams of trans fat, 26 grams of carbohydrates, and 4 grams of protein per serving.
-The manufacturer of the chocolate mint cookies changed the ingredients of its cookies.Each serving now has 1 gram of saturated fat (4 fewer grams),4 grams of trans fat (4 more grams),21 grams of carbohydrates (1 fewer gram),and 11 grams of protein (no change).Do you think that the manufacturer made these cookies healthier?

Accepted Answer

A)  No, because they now have less saturated fat. 
B)  Yes, because they now have less saturated fat. 
C)  Yes, because they now have fewer grams of carbohydrates. 
D)  No, because they now have more grams of trans fat. 
A)  No, because they now have less saturated fat. 
B)  Yes, because they now have less saturated fat. 
C)  Yes, because they now have fewer grams of carbohydrates. 
D)  No, because they now have more grams of trans fat.

Question 8

People with lactose intolerance do not have enough ________.

Accepted Answer

A)  lactose 
B)  lactase 
C)  glucose 
D)  fructose 
A)  lactose 
B)  lactase 
C)  glucose 
D)  fructose

Question 9

What name is given to the following reaction? glycerol + 3 fatty acids → triglyceride + 3 water molecules

Accepted Answer

A)  glycolysis 
B)  hydrolysis 
C)  hydrogenation 
D)  dehydration 
A)  glycolysis 
B)  hydrolysis 
C)  hydrogenation 
D)  dehydration

Question 10

A DNA molecule has the sequence AGTTCAACT.The equivalent RNA molecule would have the sequence ________.

Accepted Answer

A)  AGTTCAACT 
B)  AGUUCAACU 
C)  UGTTCUUCT 
D)  UGUUCUUCU 
A)  AGTTCAACT 
B)  AGUUCAACU 
C)  UGTTCUUCT 
D)  UGUUCUUCU

Question 11

The ability to tolerate lactose throughout life most likely arose in ________.

Accepted Answer

A)  populations that live in cold climates 
B)  populations that live in wet climates 
C)  cultures that keep dairy herds 
D)  Native Americans 
A)  populations that live in cold climates 
B)  populations that live in wet climates 
C)  cultures that keep dairy herds 
D)  Native Americans

Question 12

Animals store carbohydrates as ________.

Accepted Answer

A)  cellulose 
B)  glycogen 
C)  starch 
D)  maltose 
A)  cellulose 
B)  glycogen 
C)  starch 
D)  maltose

Question 13

A glycerol with three fatty acids attached is referred to as a ________.

Accepted Answer

A)  prostaglandin 
B)  nucleic acid 
C)  steroid 
D)  fat 
A)  prostaglandin 
B)  nucleic acid 
C)  steroid 
D)  fat

Question 14

In the following equation,lactose is a ________. galactose + glucose → lactose + water

Accepted Answer

A)  nucleic acid 
B)  fatty acid 
C)  disaccharide 
D)  dipeptide 
A)  nucleic acid 
B)  fatty acid 
C)  disaccharide 
D)  dipeptide

Question 15

Please read the following scenario to answer the following questions.
While shopping, you settle on two types of cookies. The nutritional label for the chocolate mint cookies lists 5 grams of saturated fat, 0 grams of trans fat, 22 grams of carbohydrates, and 11 grams of protein per serving. The nutritional label for the peanut butter cookies lists 0 grams of saturated fat, 5 grams of trans fat, 26 grams of carbohydrates, and 4 grams of protein per serving.
-Which cookies are less healthy?

Accepted Answer

A)  The chocolate mint cookies because they contain more saturated fat. 
B)  The chocolate mint cookies because they contain more total grams of protein and carbohydrates. 
C)  The peanut butter cookies because they contain more trans fat. 
D)  The peanut butter cookies because they contain more grams of carbohydrates. 
A)  The chocolate mint cookies because they contain more saturated fat. 
B)  The chocolate mint cookies because they contain more total grams of protein and carbohydrates. 
C)  The peanut butter cookies because they contain more trans fat. 
D)  The peanut butter cookies because they contain more grams of carbohydrates.

Question 16

Examine the two sugars in the following figure.How do these two sugars compare?

Accepted Answer

A)  Glucose has more hydrogen. 
B)  Glucose has more double bonds. 
C)  They have the same formula but different structures. 
D)  They are structurally identical in every way. 
A)  Glucose has more hydrogen. 
B)  Glucose has more double bonds. 
C)  They have the same formula but different structures. 
D)  They are structurally identical in every way.

Question 17

The following molecule is best described as a(n)________. CH₃-CH₂-CH₂-CH₂

Accepted Answer

A)  protein 
B)  carbohydrate 
C)  organic compound 
D)  inorganic compound 
A)  protein 
B)  carbohydrate 
C)  organic compound 
D)  inorganic compound

Question 18

Nucleic acids are polymers of ________ monomers.

Accepted Answer

A)  monosaccharide 
B)  fatty acid 
C)  DNA 
D)  nucleotide 
A)  monosaccharide 
B)  fatty acid 
C)  DNA 
D)  nucleotide

Question 19

Which of the following is a health effect of a diet high in saturated fats?

Accepted Answer

A)  increased risk of infectious disease 
B)  decreased risk of atherosclerosis 
C)  increased risk of heart attack 
D)  decreased risk of stroke 
A)  increased risk of infectious disease 
B)  decreased risk of atherosclerosis 
C)  increased risk of heart attack 
D)  decreased risk of stroke

Question 20

Amino acids include a side group as well as ________.

Accepted Answer

A)  a central carbon, a hydrogen atom, an amino group, and a carboxyl group 
B)  a central carbon, a hydrogen atom, a hydroxyl group, and a carbonyl group 
C)  a central nitrogen, a carbon atom, a hydroxyl group, and a carbonyl group 
D)  a central nitrogen, a carbon atom, an amino group, and a carbonyl group 
A)  a central carbon, a hydrogen atom, an amino group, and a carboxyl group 
B)  a central carbon, a hydrogen atom, a hydroxyl group, and a carbonyl group 
C)  a central nitrogen, a carbon atom, a hydroxyl group, and a carbonyl group 
D)  a central nitrogen, a carbon atom, an amino group, and a carbonyl group

Exam 3: The Molecules of Life

DNA nucleotides include ________.

If one strand of a DNA double helix has the sequence AGTACTG,what will be the sequence of the other strand?

Which of the following is TRUE with regard to a DNA molecule?

Proteins are polymers constructed from ________ monomers.

________ is a steroid.

People with lactose intolerance do not have enough ________.

What name is given to the following reaction? glycerol + 3 fatty acids → triglyceride + 3 water molecules

A DNA molecule has the sequence AGTTCAACT.The equivalent RNA molecule would have the sequence ________.

The ability to tolerate lactose throughout life most likely arose in ________.

Animals store carbohydrates as ________.

A glycerol with three fatty acids attached is referred to as a ________.

In the following equation,lactose is a ________. galactose + glucose → lactose + water

Examine the two sugars in the following figure.How do these two sugars compare?

The following molecule is best described as a(n)________. CH₃-CH₂-CH₂-CH₂

Nucleic acids are polymers of ________ monomers.

Which of the following is a health effect of a diet high in saturated fats?

Amino acids include a side group as well as ________.

Introduction: Biology Today

Essential Chemistry for Biology

A Tour of the Cell

The Working Cell

Cellular Respiration: Obtaining Energy from Food

Photosynthesis: Using Light to Make Food

Cellular Reproduction: Cells from Cells

Patterns of Inheritance

The Structure and Function of DNA

How Genes Are Controlled

DNA Technology

How Populations Evolve

How Biological Diversity Evolves

The Evolution of Microbial Life

The Evolution of Plants and Fungi

The Evolution of Animals

An Introduction to Ecology and the Biosphere

Population Ecology

Communities and Ecosystems

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Circulation and Respiration

The Body's Defenses

Hormones

Reproduction and Development

Nervous, Sensory, and Locomotor Systems

The Life of a Flowering Plant

The Working Plant

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