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Biology Chapter 9
Mrs. Stewart
21
Biology
9th Grade
10/21/2013

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Cards

Term

 

 

Despite years of research, the actual structure 

of the DNA molecule is still unknown.

Definition

 

 

 

False

 

Term

 

Bacteriophage is a type of virus

that infects bacteria

Definition

 

 

True

Term

 

 

It has been discovered that proteins are the genetic material, rather than DNA, because proteins are more complex than DNA 

 

Definition

 

 

False

Term

 

Chargaff observed that the amount of

adenine in an organism always equaled

the amount of thymine

Definition

 

 

True

Term

 

DNA polymerases have the ability to check

for errors in nucleotide pairings

 

 

 

Definition

 

 

True

Term

 

Even though Avery's experiments clearly

indicated that genetic material is

composed of DNA, most scientists at

that time continued to suspect that proteins 

were the genetic material

Definition

 

 

 

True

Term

 

The strands of a DNA molecule are held together

by hydrogen bonding between adenine with guanine

molecules and cytosine with thymine molecules

Definition

 

 

False

Term

 

The two areas on either end of the

bacterial DNA molecule where the double helix

separates are called replication forks.

Definition

 

 

True

Term

 

The five-carbon sugar in DNA

nucleotides is called ribose

Definition

 

 

 

False

Term

 

A nucleotide consists of a sugar, 

a phosphate group, and a nitrogen base

Definition

 

 

True

Term

 

The amount of guanine in an organism

always equals the amount of

 

adenine

or

cytosine

Definition

 

 

Cytosine

Term

 

Which of the following is NOT part

of a molecule of DNA

 

phosphate

or

ribose

Definition

 

 

Ribose

Term

 

The entire molecule shown in the

diagram above is called a(n)

 

amino acid

or

nucleotide

Definition

 

 

Nucleotide

Term

 

 

A vaccine is

 

a plasmid that contains disease-causing genes

or

a harmless version of a disease-causing microbe

Definition

 

 

a harmless version of a disease-causing microbe

Term

 

The part of the molecule for which 

deoxyribonucleic acid is named is the 

 

sugar

or

nitrogen base

Definition

 

 

Sugar

Term

 

Adenine : thymine

 

 

guanine : cytosine

or 

adenine : DNA

Definition

 

 

Guanine : Cytosine

Term

 

The scientists credited with establishing the

structure of DNA are

 

Mendel and Griffith

or

Watson and Crick

Definition

 

 

 

Watson and Crick

Term

 

The enzymes that unwind DNA are called

 

double helixes

or

DNA helicases

Definition

 

 

DNA helicases

Term

 

Molecules of DNA are composed of long chains of

 

amino acids 

or

nucleotides

Definition

 

 

Nucleotides

Term

 

A nucleotide consists of 

 

a sugar, a phosphate group, and a nitrogen base

or

a starch, a phosphate group, and a nitrogen base

Definition

 

 

a sugar, a phosphate group, and a nitrogen base

Term

 

During DNA replication, a complementary strand of DNA

is made for each original DNA strand. Thus, if a portion of the original strand is CCTAGCT, the the new strand will be

 

CCTAGCT

or

GGATCGA

Definition

 

 

 

GGATCGA

 

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