Question 1

Which of the following is not found in RNA?

Accepted Answer

A) adenine 
B) cytosine 
C) guanine 
D) thymine 
E) uracil 
A) adenine 
B) cytosine 
C) guanine 
D) thymine 
E) uracil

Question 2

Macromolecules are disassembled in ____________ reactions.

Accepted Answer

A) anabolic 
B) hydrolysis 
C) radioactive 
D) denaturation 
E) dehydration 
A) anabolic 
B) hydrolysis 
C) radioactive 
D) denaturation 
E) dehydration

Question 3

Imagine that you were able to see a nucleotide under a very special microscope.As you scan the nucleotide you see a U nitrogen base.Without seeing any other part of the nucleotide you know that

Accepted Answer

A) it is a DNA nucleotide. 
B) it is an RNA nucleotide. 
C) it is either a DNA nucleotide or an RNA nucleotide. 
D) you will need to continue to scan for more clues,such as the type of sugar associated with it,to be able to determine which type of nucleotide it is. 
A) it is a DNA nucleotide. 
B) it is an RNA nucleotide. 
C) it is either a DNA nucleotide or an RNA nucleotide. 
D) you will need to continue to scan for more clues,such as the type of sugar associated with it,to be able to determine which type of nucleotide it is.

Question 4

Margarine is made by hydrogenating vegetable oils so that they take on the consistency of butter.Which of the following is the chemical basis for this change from a liquid to a solid?

Accepted Answer

A) Fats are changed from unsaturated to saturated,allowing them to solidify. 
B) Fats are changed from saturated to unsaturated,allowing them to solidify. 
C) Trans-fatty acids are changed from unsaturated to saturated,allowing them to solidify. 
D) Trans fatty acids are changed from saturated to unsaturated,allowing them to solidify. 
A) Fats are changed from unsaturated to saturated,allowing them to solidify. 
B) Fats are changed from saturated to unsaturated,allowing them to solidify. 
C) Trans-fatty acids are changed from unsaturated to saturated,allowing them to solidify. 
D) Trans fatty acids are changed from saturated to unsaturated,allowing them to solidify.

Question 5

The oxidation of glucose (C6H12O6)by cellular respiration is an example of a dehydration reaction.A simplified version of this reaction can be written as

Accepted Answer

A) 6H2O + 6CO2 $\rarr$C6H12O6 + 6O2. 
B) C6H12O6 + 6O2 $\rarr$ 6H2O + 6CO2. 
C) C6H12O6 $\rarr$6H2O + 6CO2. 
D) C6H12O6 + 6O2 $\rarr$6CO2C. 
A) 6H2O + 6CO2 $\rarr$C6H12O6 + 6O2. 
B) C6H12O6 + 6O2 $\rarr$ 6H2O + 6CO2. 
C) C6H12O6 $\rarr$6H2O + 6CO2. 
D) C6H12O6 + 6O2 $\rarr$6CO2C.

Question 6

Macromolecules that are used by organisms to store hereditary information are called

Accepted Answer

A) transfer RNA molecules. 
B) messenger RNA molecules. 
C) ribosomal RNA molecules. 
D) amino acids molecules. 
E) DNA molecules. 
A) transfer RNA molecules. 
B) messenger RNA molecules. 
C) ribosomal RNA molecules. 
D) amino acids molecules. 
E) DNA molecules.

Question 7

Which of the following is a DNA sequence capable of pairing with CGATTAGT?

Accepted Answer

A) GCTAATCA 
B) CGATTAGT 
C) GCUAAUCA 
D) CGAUUAGT 
A) GCTAATCA 
B) CGATTAGT 
C) GCUAAUCA 
D) CGAUUAGT

Question 8

The digestive enzyme pepsin works in the acidic environment of the stomach to hydrolyze peptide bonds.On which of the following macromolecules does pepsin act?

Accepted Answer

A) carbohydrate 
B) protein 
C) DNA 
D) lipid 
A) carbohydrate 
B) protein 
C) DNA 
D) lipid

Question 9

Which of the following would not be an example of protein use in a living organism?

Accepted Answer

A) synthesis of macromolecules 
B) muscle contraction 
C) recognition of "self" in immune reactions 
D) stores information 
E) forms hair 
A) synthesis of macromolecules 
B) muscle contraction 
C) recognition of "self" in immune reactions 
D) stores information 
E) forms hair

Question 10

Vitamin D can be synthesized by the body from a derivative of cholesterol.Given this information,which of the following statements about the solubility of vitamin D is true?

Accepted Answer

A) Vitamin D is water-soluble. 
B) Vitamin D is fat-soluble. 
C) Vitamin D is soluble in both water and fat. 
D) Vitamin D is not soluble in either water or fat. 
A) Vitamin D is water-soluble. 
B) Vitamin D is fat-soluble. 
C) Vitamin D is soluble in both water and fat. 
D) Vitamin D is not soluble in either water or fat.

Exam 3: The Chemical Building Blocks of Life

Which of the following is not found in RNA?

Macromolecules are disassembled in ____________ reactions.

Imagine that you were able to see a nucleotide under a very special microscope.As you scan the nucleotide you see a U nitrogen base.Without seeing any other part of the nucleotide you know that

Margarine is made by hydrogenating vegetable oils so that they take on the consistency of butter.Which of the following is the chemical basis for this change from a liquid to a solid?

The oxidation of glucose (C6H12O6)by cellular respiration is an example of a dehydration reaction.A simplified version of this reaction can be written as

Macromolecules that are used by organisms to store hereditary information are called

Which of the following is a DNA sequence capable of pairing with CGATTAGT?

The digestive enzyme pepsin works in the acidic environment of the stomach to hydrolyze peptide bonds.On which of the following macromolecules does pepsin act?

Which of the following would not be an example of protein use in a living organism?

Vitamin D can be synthesized by the body from a derivative of cholesterol.Given this information,which of the following statements about the solubility of vitamin D is true?

The Science of Biology

The Nature of Molecules

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes Mapping and the Meiosis - Inheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

Genomics

Cellular Mechanisms of Development

Genes Within Populations

The Evidence for Evolution

The Origin of Species

Systematics and the Phylogenetic Revolution

Genome Evolution

Evolution of Development

The Tree of Life

Viruses

Prokaryotes

Protists

Overview of Green Plants

Fungi

Overview of Animal Diversity

Noncoelomate Invertebrates

Coelomate Invertebrates

Vertebrates

Plant Form

Vegetative Plant Development

Transport in Plants

Plant Nutrition and Soils

Plant Defense Responses

Sensory Systems in Plants

Plant Reproduction

The Animal Body and Principles of Regulation

The Nervous System

Sensory Systems

The Endocrine System

The Musculoskeletal System

The Digestive System

The Respiratory System

The Circulatory System

Osmotic Regulation and the Urinary System

The Immune System

The Reproductive System

Animal Development

Behavioral Biology

Population Ecology

Community of Ecology

Dynamics of Ecosystems

The Biosphere

Conservation Biology

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The oxidation of glucose (C₆H₁₂O₆)by cellular respiration is an example of a dehydration reaction.A simplified version of this reaction can be written as