Question 1

The nitrogen-containing bases in DNA are attached by covalent bonds to a

Accepted Answer

A) sugar. 
B) complementary base. 
C) protein. 
D) phosphate. 
A) sugar. 
B) complementary base. 
C) protein. 
D) phosphate. A

Question 2

Which is/are concerns about genetically modified food crops? I.GM plants will spread into the wild
II)GM crops threaten the natural balance
III)Use of genetically engineered crops will force pests to evolve
IV)GM crops may stop producing food because of damage to their genes

Accepted Answer

A) I and II only 
B) I and IV only 
C) I,II,and III only 
D) I,II,III,and IV 
A) I and II only 
B) I and IV only 
C) I,II,and III only 
D) I,II,III,and IV C

Question 3

How many DNA bases in any one gene must be changed for a mutation to have a serious effect?

Accepted Answer

A) One 
B) Two 
C) Five 
D) At least 100 
A) One 
B) Two 
C) Five 
D) At least 100 A

Question 4

Protein enzymes act as

Accepted Answer

A) active sites. 
B) catalysts. 
C) substrates. 
D) cells. 
A) active sites. 
B) catalysts. 
C) substrates. 
D) cells.

Question 5

DNA has a backbone that consists of alternating

Accepted Answer

A) base pairs. 
B) sugars and proteins. 
C) phosphates and sugars. 
D) proteins and bases. 
A) base pairs. 
B) sugars and proteins. 
C) phosphates and sugars. 
D) proteins and bases.

Question 6

DNA has four different nitrogen-containing bases.Which of the following are other structural characteristics of DNA? I.The bases are attached to the phosphate groups
II)The bases are attached to the sugar molecule,deoxyribose
III)The bases A and T are complementary,and C and G are complementary
IV)The bases A and C are complementary,and T and G are complementary

Accepted Answer

A) I and III 
B) II and III 
C) I and IV 
D) II and IV 
A) I and III 
B) II and III 
C) I and IV 
D) II and IV

Question 7

Which of the following is a true difference between domestic breeding and genetic engineering of plants?

Accepted Answer

A) Domestic breeding does not cause visible changes in the plant 
B) Domestic breeding does not cause changes to the DNA 
C) Domestic breeding cannot mix genes between different organisms 
D) Domestic breeding will not produce a plant that requires tending by a human 
A) Domestic breeding does not cause visible changes in the plant 
B) Domestic breeding does not cause changes to the DNA 
C) Domestic breeding cannot mix genes between different organisms 
D) Domestic breeding will not produce a plant that requires tending by a human

Question 8

Identify the base sequence that is complementary to the following DNA sequence. TTAAGGCC

Accepted Answer

A) AATTCCGG 
B) GGCCAATT 
C) AATTGGCC 
D) TTAACCGG 
A) AATTCCGG 
B) GGCCAATT 
C) AATTGGCC 
D) TTAACCGG

Question 9

Select the true statement below.

Accepted Answer

A) In the United States,genetically engineered crops are still rare 
B) Plants are only genetically engineered to resist viruses or insects 
C) Insects can evolve resistance to GM varieties in lab environments 
D) Farmers typically save GM crop seeds to replant annually 
A) In the United States,genetically engineered crops are still rare 
B) Plants are only genetically engineered to resist viruses or insects 
C) Insects can evolve resistance to GM varieties in lab environments 
D) Farmers typically save GM crop seeds to replant annually

Question 10

Human insulin protein I.is helpful in the treatment of diabetes in humans.
II)controls the levels of glucose in the blood.
III)can be produced in the bacterium,

Accepted Answer

A) I and II only 
B) II and III only 
C) I and III only 
D) I,II,and III 
E) coli 
A) I and II only 
B) II and III only 
C) I and III only 
D) I,II,and III 
E) coli

Question 11

Side chains of amino acids

Accepted Answer

A) can be polar or nonpolar. 
B) always contain nitrogen. 
C) react together in condensation polymerization. 
D) interact in secondary,but not tertiary structure. 
A) can be polar or nonpolar. 
B) always contain nitrogen. 
C) react together in condensation polymerization. 
D) interact in secondary,but not tertiary structure.

Question 12

Only three of the statements below about the nitrogen-containing bases in DNA are true.Select the false statement.

Accepted Answer

A) All bases are able to make hydrogen bonds 
B) All bases have two rings in their structure 
C) Only some bases have oxygens 
D) Four types of bases are used in DNA 
A) All bases are able to make hydrogen bonds 
B) All bases have two rings in their structure 
C) Only some bases have oxygens 
D) Four types of bases are used in DNA

Question 13

What are the three types of units that must be present in a deoxyribonucleotide used in forming DNA? 
I.base
II.deoxyribose
III.ribose
IV.phosphate
V.water

Accepted Answer

A) I,II,and V 
B) I,II,and IV 
C) I,III,and V 
D) I,III,and IV 
A) I,II,and V 
B) I,II,and IV 
C) I,III,and V 
D) I,III,and IV

Question 14

Today,human insulin for treating diabetes is generated by

Accepted Answer

A) corn plants. 
B) a strain of yeast. 
C) a strain of bacteria. 
D) lab mice. 
A) corn plants. 
B) a strain of yeast. 
C) a strain of bacteria. 
D) lab mice.

Question 15

The level of protein structure that involves hydrogen bonding between the atoms of the polypeptide backbone is

Accepted Answer

A) primary. 
B) secondary. 
C) tertiary. 
D) double helix. 
A) primary. 
B) secondary. 
C) tertiary. 
D) double helix.

Question 16

Genetic engineered enzymes can make chemical synthesis greener.Which of the following is not an advantage of enzyme-based reactions?

Accepted Answer

A) Enzymes are reusable 
B) Enzymes are carbon neutral 
C) Enzymes can be designed to handle specific reactions 
D) Enzymes require fewer toxic chemicals than traditional catalysts 
A) Enzymes are reusable 
B) Enzymes are carbon neutral 
C) Enzymes can be designed to handle specific reactions 
D) Enzymes require fewer toxic chemicals than traditional catalysts

Question 17

Genetic engineering has been used in Hawaii to protect the papaya crops by

Accepted Answer

A) making the papaya poisonous to invading insects. 
B) introducing a new strain of papaya that is resistant to fungus growth. 
C) incorporating DNA from the virus to help the plants resist this disease. 
D) incorporating DNA that made the fruit more resistant to rotting after harvest. 
A) making the papaya poisonous to invading insects. 
B) introducing a new strain of papaya that is resistant to fungus growth. 
C) incorporating DNA from the virus to help the plants resist this disease. 
D) incorporating DNA that made the fruit more resistant to rotting after harvest.

Question 18

DNA must uncoil before replication.

Accepted Answer

A) True 
 B)False

Question 19

A codon is three

Accepted Answer

A) bases in DNA. 
B) amino acids in a polypeptide. 
C) chemical units in a nucleotide. 
D) sugar in a polysaccharide. 
A) bases in DNA. 
B) amino acids in a polypeptide. 
C) chemical units in a nucleotide. 
D) sugar in a polysaccharide.

Question 20

The identity and sequence of the amino acids present in a protein is its

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.

The nitrogen-containing bases in DNA are attached by covalent bonds to a

Which is/are concerns about genetically modified food crops? I.GM plants will spread into the wild II)GM crops threaten the natural balance III)Use of genetically engineered crops will force pests to evolve IV)GM crops may stop producing food because of damage to their genes

How many DNA bases in any one gene must be changed for a mutation to have a serious effect?

Protein enzymes act as

DNA has a backbone that consists of alternating

Which of the following is a true difference between domestic breeding and genetic engineering of plants?

Identify the base sequence that is complementary to the following DNA sequence. TTAAGGCC

Select the true statement below.

Human insulin protein I.is helpful in the treatment of diabetes in humans. II)controls the levels of glucose in the blood. III)can be produced in the bacterium,

Side chains of amino acids

Only three of the statements below about the nitrogen-containing bases in DNA are true.Select the false statement.

What are the three types of units that must be present in a deoxyribonucleotide used in forming DNA? I.base II.deoxyribose III.ribose IV.phosphate V.water

Today,human insulin for treating diabetes is generated by

The level of protein structure that involves hydrogen bonding between the atoms of the polypeptide backbone is

Genetic engineered enzymes can make chemical synthesis greener.Which of the following is not an advantage of enzyme-based reactions?

Genetic engineering has been used in Hawaii to protect the papaya crops by

DNA must uncoil before replication.

A codon is three

The identity and sequence of the amino acids present in a protein is its

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Exam 13: Genes and Life

The nitrogen-containing bases in DNA are attached by covalent bonds to a

Which is/are concerns about genetically modified food crops? I.GM plants will spread into the wild II)GM crops threaten the natural balance III)Use of genetically engineered crops will force pests to evolve IV)GM crops may stop producing food because of damage to their genes

How many DNA bases in any one gene must be changed for a mutation to have a serious effect?

Protein enzymes act as

DNA has a backbone that consists of alternating

Which of the following is a true difference between domestic breeding and genetic engineering of plants?

Identify the base sequence that is complementary to the following DNA sequence. TTAAGGCC

Select the true statement below.

Human insulin protein I.is helpful in the treatment of diabetes in humans. II)controls the levels of glucose in the blood. III)can be produced in the bacterium,

Side chains of amino acids

Only three of the statements below about the nitrogen-containing bases in DNA are true.Select the false statement.

What are the three types of units that must be present in a deoxyribonucleotide used in forming DNA? I.base II.deoxyribose III.ribose IV.phosphate V.water

Today,human insulin for treating diabetes is generated by

The level of protein structure that involves hydrogen bonding between the atoms of the polypeptide backbone is

Genetic engineered enzymes can make chemical synthesis greener.Which of the following is not an advantage of enzyme-based reactions?

Genetic engineering has been used in Hawaii to protect the papaya crops by

DNA must uncoil before replication.

A codon is three

The identity and sequence of the amino acids present in a protein is its

Portable Electronics: the Periodic Table in the Palm of Your Hand

The Air We Breathe

Radiation From the Sun

Climate Change

Energy From Combustion

Energy From Alternative Sources

Energy Storage

Water Everywhere: A Most Precious Resource

The World of Polymers and Plastics

Brewing and Chewing

Nutrition

Health Medicine

Who Killed Drthompson a Forensic Mystery

Filters