Question 1

Which of the following statements regarding triglyceride molecules is false?

Accepted Answer

A)  Triglycerides consist of three fatty acids attached to a glycerol molecule. 
B)  Triglycerides play a role in energy storage. 
C)  Triglycerides are a type of fat. 
D)  Triglycerides are hydrophilic. 
A)  Triglycerides consist of three fatty acids attached to a glycerol molecule. 
B)  Triglycerides play a role in energy storage. 
C)  Triglycerides are a type of fat. 
D)  Triglycerides are hydrophilic.

Question 2

Which of the following foods would be least likely to contribute to the development of heart disease?

Accepted Answer

A)  margarine 
B)  butter 
C)  bacon 
D)  fish oil 
A)  margarine 
B)  butter 
C)  bacon 
D)  fish oil

Question 3

Which of the following statements regarding nucleotides is false?

Accepted Answer

A)  Nucleotides contain lipids. 
B)  Nucleotides contain sugar molecules. 
C)  Nucleotides can be linked together to form nucleic acids. 
D)  Nucleotides contain nitrogenous bases. 
A)  Nucleotides contain lipids. 
B)  Nucleotides contain sugar molecules. 
C)  Nucleotides can be linked together to form nucleic acids. 
D)  Nucleotides contain nitrogenous bases.

Question 4

The development of heart disease can result from a diet high in

Accepted Answer

A)  fiber. 
B)  protein. 
C)  saturated fats. 
D)  sugars. 
A)  fiber. 
B)  protein. 
C)  saturated fats. 
D)  sugars.

Question 5

The recent National Health and Nutrition Examination Survey found a 275% greater risk of what disease for individuals who consumed more than 25% of their daily calories from added sugars?

Accepted Answer

A)  diabetes 
B)  cardiovascular disease 
C)  stomach cancer 
D)  hypertension 
A)  diabetes 
B)  cardiovascular disease 
C)  stomach cancer 
D)  hypertension

Question 6

A protein containing more than one polypeptide chain exhibits the ________ level of protein structure.

Accepted Answer

A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary 
A)  primary 
B)  secondary 
C)  tertiary 
D)  quaternary

Question 7

Why did the lactose tolerance mutation in the East African herders spread so rapidly within the population?

Accepted Answer

A)  Milk provided calcium for strong bones. 
B)  It was a selective advantage for survival during droughts and cold winters. 
C)  Lactose was a better source of energy than glucose. 
D)  Milk was a good source of protein during the summer harvests. 
A)  Milk provided calcium for strong bones. 
B)  It was a selective advantage for survival during droughts and cold winters. 
C)  Lactose was a better source of energy than glucose. 
D)  Milk was a good source of protein during the summer harvests.

Question 8

Which of the following is a carboxyl group?

Accepted Answer

A)  -C-O 
B)  -OH 
C)  -NH2 
D)  -COOH 
A)  -C-O 
B)  -OH 
C)  -NH2 
D)  -COOH

Question 9

Propanol and isopropanol are isomers. This means that they have

Accepted Answer

A)  the same molecular formula but different chemical properties. 
B)  different molecular formulas but the same chemical properties. 
C)  the same molecular formula and the same chemical properties. 
D)  the same molecular formula but represent different states of the compound. 
A)  the same molecular formula but different chemical properties. 
B)  different molecular formulas but the same chemical properties. 
C)  the same molecular formula and the same chemical properties. 
D)  the same molecular formula but represent different states of the compound.

Question 10

When microbes are in the dark, they do not produce molecules called carotenoids because the PR proteins are bound to DNA. In the light, however, carotenoids are produced because the PR proteins unbind the DNA. Which of the following graphs best summarizes these statements about carotenoid production in microbes?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 11

A diet high in animal products and hydrogenated vegetable margarine may increase the risk for heart disease. This is because

Accepted Answer

A)  most animal fats are unsaturated and most hydrogenated vegetable margarines contain high levels of steroids. 
B)  most hydrogenated vegetable margarines are hydrogenated oils and most animal products contain high levels of phospholipids. 
C)  most animal fats are used for energy storage and most hydrogenated vegetable margarines contain high levels of unsaturated fats. 
D)  most animal fats are saturated and many hydrogenated vegetable margarines contain high levels of trans fats. 
A)  most animal fats are unsaturated and most hydrogenated vegetable margarines contain high levels of steroids. 
B)  most hydrogenated vegetable margarines are hydrogenated oils and most animal products contain high levels of phospholipids. 
C)  most animal fats are used for energy storage and most hydrogenated vegetable margarines contain high levels of unsaturated fats. 
D)  most animal fats are saturated and many hydrogenated vegetable margarines contain high levels of trans fats.

Question 12

The storage form of carbohydrates is ________ in animals and ________ in plants.

Accepted Answer

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

Question 13

Many names for sugars end in the suffix

Accepted Answer

A)  -acid. 
B)  -ose. 
C)  -hyde. 
D)  -ase. 
A)  -acid. 
B)  -ose. 
C)  -hyde. 
D)  -ase.

Question 14

What is the complementary sequence to the DNA strand TCGATGG?

Accepted Answer

A)  TCGATGG 
B)  GGTAGCT 
C)  AGCUACC 
D)  AGCTACC 
A)  TCGATGG 
B)  GGTAGCT 
C)  AGCUACC 
D)  AGCTACC

Question 15

Cellulose differs from starch in that

Accepted Answer

A)  starch is formed by plants and cellulose by animals. 
B)  most animals cannot break down cellulose, whereas starch is easily digested. 
C)  starch is made of glucose monomers, whereas cellulose is made of fructose monomers. 
D)  cellulose is highly branched, whereas starch is unbranched. 
A)  starch is formed by plants and cellulose by animals. 
B)  most animals cannot break down cellulose, whereas starch is easily digested. 
C)  starch is made of glucose monomers, whereas cellulose is made of fructose monomers. 
D)  cellulose is highly branched, whereas starch is unbranched.

Question 16

Which of the following would be correctly classified as a protein?

Accepted Answer

A)  cholesterol 
B)  starch 
C)  an enzyme 
D)  cellulose 
A)  cholesterol 
B)  starch 
C)  an enzyme 
D)  cellulose

Question 17

Based on your understanding of enzyme structure, which of the following would you recommend that they also investigate?

Accepted Answer

A)  the temperature of the liquid in the washing vat 
B)  the manufacturer of the fabric 
C)  how long the fabric has been in storage 
D)  the primary structure of the enzyme 
A)  the temperature of the liquid in the washing vat 
B)  the manufacturer of the fabric 
C)  how long the fabric has been in storage 
D)  the primary structure of the enzyme

Question 18

The results of dehydration reactions can be reversed by

Accepted Answer

A)  condensation reactions. 
B)  hydrolysis reactions. 
C)  polymerization reactions. 
D)  the addition of an amino group. 
A)  condensation reactions. 
B)  hydrolysis reactions. 
C)  polymerization reactions. 
D)  the addition of an amino group.

Question 19

Which meal is high in fiber, low in saturated fats, and high in unsaturated fats?

Accepted Answer

A)  beef, potatoes, and carrots 
B)  eggs and bacon 
C)  black beans, cheese, lettuce, and sour cream 
D)  spaghetti noodles with olive oil and broccoli 
A)  beef, potatoes, and carrots 
B)  eggs and bacon 
C)  black beans, cheese, lettuce, and sour cream 
D)  spaghetti noodles with olive oil and broccoli

Question 20

Which of the following characteristics of a protein will remain intact if the protein is denatured?

Accepted Answer

A)  the shape of the protein 
B)  the function of the protein 
C)  the number of amino acids in the protein 
D)  the binding properties of the protein 
A)  the shape of the protein 
B)  the function of the protein 
C)  the number of amino acids in the protein 
D)  the binding properties of the protein

Exam 3: The Molecules of Cells

Which of the following statements regarding triglyceride molecules is false?

Which of the following foods would be least likely to contribute to the development of heart disease?

Which of the following statements regarding nucleotides is false?

The development of heart disease can result from a diet high in

The recent National Health and Nutrition Examination Survey found a 275% greater risk of what disease for individuals who consumed more than 25% of their daily calories from added sugars?

A protein containing more than one polypeptide chain exhibits the ________ level of protein structure.

Why did the lactose tolerance mutation in the East African herders spread so rapidly within the population?

Which of the following is a carboxyl group?

Propanol and isopropanol are isomers. This means that they have

A diet high in animal products and hydrogenated vegetable margarine may increase the risk for heart disease. This is because

The storage form of carbohydrates is ________ in animals and ________ in plants.

Many names for sugars end in the suffix

What is the complementary sequence to the DNA strand TCGATGG?

Cellulose differs from starch in that

Which of the following would be correctly classified as a protein?

Based on your understanding of enzyme structure, which of the following would you recommend that they also investigate?

The results of dehydration reactions can be reversed by

Which meal is high in fiber, low in saturated fats, and high in unsaturated fats?

Which of the following characteristics of a protein will remain intact if the protein is denatured?

Biology: Exploring Life

The Chemical Basis of Life

A Tour of the Cell

The Working Cell

How Cells Harvest Chemical Energy

Photosynthesis: Using Light to Make Food

The Cellular Basis of Reproduction and Inheritance

Patterns of Inheritance

Molecular Biology of the Gene

How Genes Are Controlled

DNA Technology and Genomics

How Populations Evolve

The Origin of Species

Tracing Evolutionary History

Microbial Life: Prokaryotes and Protists

The Evolution of Plant and Fungal Diversity

The Evolution of Invertebrate Diversity

The Evolution of Vertebrate Diversity

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Gas Exchange

Circulation

The Immune System

Control of Body Temperature and Water Balance

Hormones and the Endocrine System

Reproduction and Embryonic Development

Nervous Systems

The Senses

How Animals Move

Plant Structure, Growth, and Reproduction

Plant Nutrition and Transport

Control Systems in Plants

The Biosphere: an Introduction to Earths Diverse Environments

Behavioral Adaptations to the Environment

Population Ecology

Communities and Ecosystems

Conservation Biology

Filters

The storage form of carbohydrates is in animals and in plants.