Question 1

A nucleic acid contains uracil,allowing you to conclude that:

Accepted Answer

A)  this nucleic acid is DNA.
B)  this nucleic acid is RNA.
C)  this nucleic acid could be either DNA or RNA.

Question 2

This atom in its unbound state has four valence electrons.These electrons readily form single,double,and even triple bonds among themselves to become stable.This atom is:

Accepted Answer

A)  carbon.
B)  hydrogen.
C)  oxygen.
D)  nitrogen.
E)  phosphorus.

Question 3

Organic molecules have a carbon backbone and ________ such as -OH and -NH2 that affect their chemical properties.

Accepted Answer

A)  R groups
B)  extension groups
C)  functional groups
D)  chemical groups

Question 4

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

Accepted Answer

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

Question 5

Enzymes function to:

Accepted Answer

A)  react with other enzymes to form a product.
B)  catalyze chemical reactions.
C)  transport molecules and ions across membranes.
D)  regulate messages between cells.

Question 6

You have recently identified a novel protein and obtained its sequence.How could you use this sequence to predict the function of the protein?

Accepted Answer

A)  By determining the secondary structure of the protein.
B)  By using the sequence to make antibodies against the protein.
C)  By looking for conserved domains.
D)  By determining the DNA sequence that could encode the protein.

Question 7

Vitamin D can be synthesized by the body from a derivative of cholesterol.Given this information,predict vitamin D's solubility.

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.

Question 8

A DNA molecule containing 32% thymine would contain how much cytosine?

Accepted Answer

A)  18%
B)  32%
C)  36%
D)  64%

Question 9

A candy bar contains 108 calories per serving.There are 4 grams of carbohydrate,5 grams of protein,and 8 grams of fat in a serving.How many of the calories come from fat? Note: One food calorie equals one kilocalorie.

Accepted Answer

A)  20
B)  16
C)  72
D)  18

Question 10

A phosphorus shortage in soil would make it difficult for plants to produce:

Accepted Answer

A)  cellulose
B)  amylose
C)  starch
D)  DNA

Question 11

You arrive late to a biological seminar.However,just as you enter the room,you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule.Immediately,you know that they are talking about a:

Accepted Answer

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

Question 12

The nitrogenous base that is only found in DNA and not in RNA is:

Accepted Answer

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

Question 13

A nucleic acid contains thymine,allowing you to conclude that:

Accepted Answer

A)  this nucleic acid is DNA.
B)  this nucleic acid is RNA.
C)  this nucleic acid could be either DNA or RNA.

Question 14

Common lipids for energy storage are:

Accepted Answer

A)  phospholipids.
B)  steroids.
C)  triglycerides.
D)  cholesterols.
E)  waxes.

Exam 3: The Chemical Building Blocks of Life

You arrive late to a biological seminar.However,just as you enter the room,you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule.Immediately,you know that they are talking about a:

Correct Answer
verified

A nucleic acid contains thymine,allowing you to conclude that:

Correct Answer
verified

Enzymes function to:

Correct Answer
verified

A phosphorus shortage in soil would make it difficult for plants to produce:

Correct Answer
verified

The nitrogenous base that is only found in DNA and not in RNA is:

Correct Answer
verified

A nucleic acid contains uracil,allowing you to conclude that:

Correct Answer
verified

Organic molecules have a carbon backbone and ________ such as -OH and -NH₂ that affect their chemical properties.

Correct Answer
verified

A DNA molecule containing 32% thymine would contain how much cytosine?

Correct Answer
verified

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

Correct Answer
verified

A candy bar contains 108 calories per serving.There are 4 grams of carbohydrate,5 grams of protein,and 8 grams of fat in a serving.How many of the calories come from fat? Note: One food calorie equals one kilocalorie.

Correct Answer
verified

You have recently identified a novel protein and obtained its sequence.How could you use this sequence to predict the function of the protein?

Correct Answer
verified

Common lipids for energy storage are:

Correct Answer
verified

Vitamin D can be synthesized by the body from a derivative of cholesterol.Given this information,predict vitamin D's solubility.

Correct Answer
verified

This atom in its unbound state has four valence electrons.These electrons readily form single,double,and even triple bonds among themselves to become stable.This atom is:

Correct Answer
verified

Exam 3: The Chemical Building Blocks of Life

You arrive late to a biological seminar.However,just as you enter the room,you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule.Immediately,you know that they are talking about a:

Correct AnswerverifiedShow Answer

A nucleic acid contains thymine,allowing you to conclude that:

Correct AnswerverifiedShow Answer

Enzymes function to:

Correct AnswerverifiedShow Answer

A phosphorus shortage in soil would make it difficult for plants to produce:

Correct AnswerverifiedShow Answer

The nitrogenous base that is only found in DNA and not in RNA is:

Correct AnswerverifiedShow Answer

A nucleic acid contains uracil,allowing you to conclude that:

Correct AnswerverifiedShow Answer

Organic molecules have a carbon backbone and ________ such as -OH and -NH2 that affect their chemical properties.

Correct AnswerverifiedShow Answer

A DNA molecule containing 32% thymine would contain how much cytosine?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A candy bar contains 108 calories per serving.There are 4 grams of carbohydrate,5 grams of protein,and 8 grams of fat in a serving.How many of the calories come from fat? Note: One food calorie equals one kilocalorie.

Correct AnswerverifiedShow Answer

You have recently identified a novel protein and obtained its sequence.How could you use this sequence to predict the function of the protein?

Correct AnswerverifiedShow Answer

Common lipids for energy storage are:

Correct AnswerverifiedShow Answer

Vitamin D can be synthesized by the body from a derivative of cholesterol.Given this information,predict vitamin D's solubility.

Correct AnswerverifiedShow Answer

This atom in its unbound state has four valence electrons.These electrons readily form single,double,and even triple bonds among themselves to become stable.This atom is:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Organic molecules have a carbon backbone and ________ such as -OH and -NH₂ that affect their chemical properties.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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