Question 1

Lactose intolerance

Accepted Answer

A)  is common in people of all ages, from infancy to adulthood. 
B)  is most common in people of European descent. 
C)  can currently be treated by gene therapy to treat the underlying cause. 
D)  does not affect the consumption of beverages made from soy or rice. 
A)  is common in people of all ages, from infancy to adulthood. 
B)  is most common in people of European descent. 
C)  can currently be treated by gene therapy to treat the underlying cause. 
D)  does not affect the consumption of beverages made from soy or rice.

Question 2

Which of the following statements regarding carbon is false?

Accepted Answer

A)  Carbon has a tendency to form covalent bonds. 
B)  Carbon has the ability to bond with up to six other atoms. 
C)  Carbon has the capacity to form single and double bonds. 
D)  Carbon has the ability to bond together to form extensive branched or unbranched "carbon skeletons." 
A)  Carbon has a tendency to form covalent bonds. 
B)  Carbon has the ability to bond with up to six other atoms. 
C)  Carbon has the capacity to form single and double bonds. 
D)  Carbon has the ability to bond together to form extensive branched or unbranched "carbon skeletons."

Question 3

Which of the following statements about enzymes is false?

Accepted Answer

A)  They increase the rate of chemical reactions. 
B)  They function as chemical catalysts. 
C)  They regulate virtually all chemical reactions in a cell. 
D)  They are monomers used to build proteins. 
A)  They increase the rate of chemical reactions. 
B)  They function as chemical catalysts. 
C)  They regulate virtually all chemical reactions in a cell. 
D)  They are monomers used to build proteins.

Question 4

Which of the following statements about dehydration reactions is false?

Accepted Answer

A)  One monomer loses a hydrogen atom, and the other loses a hydroxyl group. 
B)  H2O is formed as the monomers are joined. 
C)  Covalent bonds are formed between the monomers. 
D)  Animal digestive systems utilize this process to break down food. 
A)  One monomer loses a hydrogen atom, and the other loses a hydroxyl group. 
B)  H2O is formed as the monomers are joined. 
C)  Covalent bonds are formed between the monomers. 
D)  Animal digestive systems utilize this process to break down food.

Question 5

Which of the following statements about animal cell lipids is false?

Accepted Answer

A)  Fats are a form of lipid that function to store energy. 
B)  Phospholipids are important components of cell membranes. 
C)  Many lipids function as enzymes. 
D)  Cholesterol is a type of lipid that is a component of cell membranes and steroid hormones. 
A)  Fats are a form of lipid that function to store energy. 
B)  Phospholipids are important components of cell membranes. 
C)  Many lipids function as enzymes. 
D)  Cholesterol is a type of lipid that is a component of cell membranes and steroid hormones.

Question 6

Which of the following is an example of secondary structure in a protein?

Accepted Answer

A)  a particular amino acid sequence 
B)  an alpha helix 
C)  a globular shape 
D)  the joining of two polypeptide chains 
A)  a particular amino acid sequence 
B)  an alpha helix 
C)  a globular shape 
D)  the joining of two polypeptide chains

Question 7

You identify a molecule in a pizza that is a polymer; has oxygen, hydrogen, and sulfur atoms; and is hydrophilic. What kind of molecule is it?

Accepted Answer

A)  protein 
B)  carbohydrate 
C)  nucleic acid 
D)  lipid 
A)  protein 
B)  carbohydrate 
C)  nucleic acid 
D)  lipid

Question 8

Your first big biology exam is coming up in a few days, and in order to prepare for late-night study sessions, you buy a box of Yummies, a delicious type of snack cake. After checking out the nutrition facts label on the side of the box, you discover that a single Yummie cake contains 4.5 grams of total fat, 27 grams of carbohydrate, 0 grams of fiber, and 1 gram of protein.
-After eating a Yummie cake, what molecule do you expect to be most abundant in your digestive system?

Accepted Answer

A)  amino acids 
B)  monosaccharides 
C)  cellulose 
D)  triglycerides 
A)  amino acids 
B)  monosaccharides 
C)  cellulose 
D)  triglycerides

Question 9

The primary structure of a protein is

Accepted Answer

A)  an alpha helix or a pleated sheet. 
B)  the amino acid sequence of the polypeptide chain. 
C)  composed of two or more polypeptide chains. 
D)  maintained by hydrogen bonds. 
A)  an alpha helix or a pleated sheet. 
B)  the amino acid sequence of the polypeptide chain. 
C)  composed of two or more polypeptide chains. 
D)  maintained by hydrogen bonds.

Exam 3: The Molecules of Cells

Lactose intolerance

Which of the following statements regarding carbon is false?

Which of the following statements about enzymes is false?

Which of the following statements about dehydration reactions is false?

Which of the following statements about animal cell lipids is false?

Which of the following is an example of secondary structure in a protein?

You identify a molecule in a pizza that is a polymer; has oxygen, hydrogen, and sulfur atoms; and is hydrophilic. What kind of molecule is it?

The primary structure of a protein is

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