Question 1

Which of the following statements comparing DNA and RNA is correct?

Accepted Answer

A) DNA exists as a double helix of DNA chains; RNA is single stranded. 
B) RNA exists as a double helix of RNA chains; DNA is single stranded. 
C) Both DNA and RNA exist as a double helix. 
D) Both DNA and RNA are single stranded. 
A) DNA exists as a double helix of DNA chains; RNA is single stranded. 
B) RNA exists as a double helix of RNA chains; DNA is single stranded. 
C) Both DNA and RNA exist as a double helix. 
D) Both DNA and RNA are single stranded.

Question 2

A salt bridge occurs when the oppositely charged side chains on two amino acids within the same or different protein chains are attracted to each other.

Accepted Answer

A) True 
 B)False

Question 3

Starch and Cellulose are examples of ________.

Accepted Answer

The answer of Starch and Cellulose are examples of ________....

Question 4

Which of the following statements about the genetic code is NOT true?

Accepted Answer

A) Each codon consists of four bases. 
B) An amino acid may be coded for by more than one codon. 
C) Some codons act as stop signals and terminate further synthesis of a protein chain. 
D) Codons consist of some combination of A, G, C and U. 
A) Each codon consists of four bases. 
B) An amino acid may be coded for by more than one codon. 
C) Some codons act as stop signals and terminate further synthesis of a protein chain. 
D) Codons consist of some combination of A, G, C and U.

Question 5

DNA is found primarily in the cell

Accepted Answer

A) nucleus. 
B) ribosomes. 
C) mitochondria. 
D) DNA is found throughout the cell. 
A) nucleus. 
B) ribosomes. 
C) mitochondria. 
D) DNA is found throughout the cell.

Question 6

If the DNA template chain contains the 5' → 3' sequence A-T-T-G-C,what will be the sequence on the newly synthesized mRNA chain?

Accepted Answer

A) 3' → 5' T-A-A-C-G 
B) 5' → 3' T-A-A-C-G 
C) 3' → 5' U-A-A-C-G 
D) 5' → 3' U-A-A-C-G 
A) 3' → 5' T-A-A-C-G 
B) 5' → 3' T-A-A-C-G 
C) 3' → 5' U-A-A-C-G 
D) 5' → 3' U-A-A-C-G

Question 7

Using biochemical methods to make products has many advantages over more traditional methods.Which of the following is NOT an advantage of biochemical methods?

Accepted Answer

A) Reactions frequently use water as a solvent, and water is nontoxic and nonflammable. 
B) Nonpolar products are difficult to separate from a water solvent. 
C) Most biochemical reactions are carried out at mild temperatures and atmospheric pressure. 
D) Enzymes can be used repeatedly to catalyze the formation of many molecules and thus generate little waste. 
A) Reactions frequently use water as a solvent, and water is nontoxic and nonflammable. 
B) Nonpolar products are difficult to separate from a water solvent. 
C) Most biochemical reactions are carried out at mild temperatures and atmospheric pressure. 
D) Enzymes can be used repeatedly to catalyze the formation of many molecules and thus generate little waste.

Question 8

The pleated structure of certain proteins,such as silk,is part of the protein's

Accepted Answer

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

Question 9

Which of the following is NOT true for a DNA double helix?

Accepted Answer

A) Complementary base pairs are on the outside of the double helix. 
B) Complementary base pairs are on the inside of the double helix. 
C) The phosphate groups are on the outside of the double helix. 
D) Each complementary base pair contains a pyrimidine and a purine. 
A) Complementary base pairs are on the outside of the double helix. 
B) Complementary base pairs are on the inside of the double helix. 
C) The phosphate groups are on the outside of the double helix. 
D) Each complementary base pair contains a pyrimidine and a purine.

Question 10

What is a disulfide bond? How does it influence the structure of a protein?

Accepted Answer

A disulfide bond, also known as a disulf

Question 11

How many different tripeptides can be made that contain serine,glycine and phenylalanine?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 6 
A) 1 
B) 2 
C) 3 
D) 6

Question 12

What is the major structural difference between cellulose and starch?

Accepted Answer

The major structural difference between

Question 13

The series of chemical reactions that degrade molecules to provide energy to a living system is called ________.

Accepted Answer

The answer of The series of chemical reactions that degrade...

Question 14

What type of molecule carries the amino acid from the cell fluid to the ribosomes?

Accepted Answer

A) uracil 
B) tRNA 
C) guanine 
D) DNA 
A) uracil 
B) tRNA 
C) guanine 
D) DNA

Question 15

A disulfide linkage in a protein is a(n)

Accepted Answer

A) ionic bond between sulfur atoms on different amino acids. 
B) covalent bond between sulfur atoms on different amino acids. 
C) hydrogen bond between sulfur atoms on different amino acids. 
D) hydrophobic interaction between sulfur atoms on different amino acids. 
A) ionic bond between sulfur atoms on different amino acids. 
B) covalent bond between sulfur atoms on different amino acids. 
C) hydrogen bond between sulfur atoms on different amino acids. 
D) hydrophobic interaction between sulfur atoms on different amino acids.

Question 16

The polysaccharide that is in potatoes and cereal grains is

Accepted Answer

A) starch. 
B) galactose. 
C) cellulose. 
D) fructose. 
A) starch. 
B) galactose. 
C) cellulose. 
D) fructose.

Question 17

86% of the corn planted in the U.S.is genetically modified.

Accepted Answer

A) True 
 B)False

Question 18

Pyrimidines have only one ring,while purines have two.

Accepted Answer

A) True 
 B)False

Question 19

One of the bases in the nucleotides of DNA is

Accepted Answer

A) lactose. 
B) deoxyribose. 
C) adenine. 
D) uracil. 
A) lactose. 
B) deoxyribose. 
C) adenine. 
D) uracil.

Question 20

Which of the following approaches has NOT been explored as an alternate source of gasoline?

Accepted Answer

A) Transformation of plant carbohydrates to form gasoline. 
B) Engineering bacteria that can convert carbohydrates and carbon dioxide into gasoline. 
C) Development of bacteria that produce hydrocarbon fuels. 
D) All of the above have been explored as alternate sources of gasoline. 
A) Transformation of plant carbohydrates to form gasoline. 
B) Engineering bacteria that can convert carbohydrates and carbon dioxide into gasoline. 
C) Development of bacteria that produce hydrocarbon fuels. 
D) All of the above have been explored as alternate sources of gasoline.

Exam 16: Biochemistry

Which of the following statements comparing DNA and RNA is correct?

A salt bridge occurs when the oppositely charged side chains on two amino acids within the same or different protein chains are attracted to each other.

Starch and Cellulose are examples of ________.

Which of the following statements about the genetic code is NOT true?

DNA is found primarily in the cell

If the DNA template chain contains the 5' → 3' sequence A-T-T-G-C,what will be the sequence on the newly synthesized mRNA chain?

Using biochemical methods to make products has many advantages over more traditional methods.Which of the following is NOT an advantage of biochemical methods?

The pleated structure of certain proteins,such as silk,is part of the protein's

Which of the following is NOT true for a DNA double helix?

What is a disulfide bond? How does it influence the structure of a protein?

How many different tripeptides can be made that contain serine,glycine and phenylalanine?

What is the major structural difference between cellulose and starch?

The series of chemical reactions that degrade molecules to provide energy to a living system is called ________.

What type of molecule carries the amino acid from the cell fluid to the ribosomes?

A disulfide linkage in a protein is a(n)

The polysaccharide that is in potatoes and cereal grains is

86% of the corn planted in the U.S.is genetically modified.

Pyrimidines have only one ring,while purines have two.

One of the bases in the nucleotides of DNA is

Which of the following approaches has NOT been explored as an alternate source of gasoline?

Chemistry

Atoms

Atomic Structure

Chemical Bonds

Chemical Accounting

Gases, Liquids, Solids, and Intermolecular Forces

Acids and Bases

Oxidation and Reduction

Organic Chemistry

Polymers

Nuclear Chemistry

Chemistry of the Earth

Air

Water

Energy

Food

Drugs

Fitness and Health

Chemistry Down on the Farm

Household Chemicals

Poisons

Filters