The bonds that hold the two strands of DNA together come from

weak hydrogen bonds between N-bases

Cytosine and guanine form

3 hydrogen bonds with each other

Which researcher(s) used radioactive markers to show DNA was the genetic material in cells?

Alfred Hershey and Martha Chase

Oswald Avery used enzymes to break down protein, lipids, carbohydrates, and RNA, and discovered

DNA was the transforming factor in Griffith's experiments

Before DNA was definitively shown to be the genetic material in cells, scientists proved that

DNA carried and made copies of information.

Frederick Griffith used two strains of pneumonia in his experiments called

S-strain and R-strain (S-caused disease)

A purine is different in a pyrimidine because

purines have two rings instead of one

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Chapter 15 Review

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High school college prep biology class Quiz! for our test on DNA structure and function. Includes scientists who helped discover structure

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Questions 29

Answers

1
In prokaryotes, DNA molecules are located in the ______
ribosomes
cytoplasm
nucleous
histones
2
The bonds that hold the two strands of DNA together come from
weak hydrogen bonds between N-bases
the attraction of phosphate groups to each other
strong bonds between the N-base and sugar-phosphate backbone
carbon-to-carbon bonds in the sugar portion of nucleotides
3
The D in DNA stands for
delineation.
dinucleotide.
decahedron.
deoxyribose.
4
Which polymer is incorrectly paired with it's monomer?
polysaccharide: monosaccharide
nucleic acids: nucleotides
lipids: fatty acid and glycerol
proteins: starch
5
Hershey-Chase experiments used radioactive markers to observe ____ in bacteriophage infection
lipids and DNA
proteins and DNA
DNA and RNA
proteins and lipids
6
The diagram below shows the process of
replication
digestion
transformation
transpiration
7
Select the best description of a cell membrane.
phospholipid bilayer
contains channels to allow free passage of ions
feels like jelly
two layers of hydrophobic lipids
8
Cytosine and guanine form
2 hydrogen bonds with each other
3 hydrogen bonds with each other
2 covalent bonds with each other
cytosine and guanine do not bond together
9
The two strands of DNA are
identical
prime
parallel
antiparallel
10
A nucleotide gets its negative charge from atoms on the
hydrogen bond.
phosphate ion.
sugar.
nitrogen base.
11
Hydrogen bonds are ______; covalent bonds are ______.
weak; strong
centralized; decentralized
important; not important
strong; weak
12
According to Chargaff's rule of base pairing, which is true about DNA?
A = T = C = G
A = C and T = G
A = T and C = G
A = G and T = C
13
The process by which one strain of bacterium is changed into another strain is called _________
duplication.
transcription.
replication.
transformation.
14
Nucleotides are added to the ________ end of DNA during replication.
added at random
5 prime (5')
3 prime (3')
5' and 3'
15
A nucleotide does NOT contain
an amino acid.
a nitrogen base.
a phosphate group.
a 5-carbon sugar.
16
The main enzyme involved in linking individual nucleotides into a DNA molecule is
ribose
carbohydrase
DNA protease
DNA polymerase
17
James Watson and Francis Crick won the Nobel Prize with what other scientist?
Carolus Linnaeus
Maurice Wilkins
John Randall
Rosalind Franklin
18
DNA replication forks form at ______ points in the genome during replication.
wherever a 3' end is found
where DNA polymerase attaches
many points
one point
19
Which researcher(s) used radioactive markers to show DNA was the genetic material in cells?
Oswald Avery
Alfred Hershey and Martha Chase
Frederick Griffith
James Watson and Francis Crick
20
Oswald Avery used enzymes to break down protein, lipids, carbohydrates, and RNA, and discovered
proteins are transferred during bacterial transformation
lipids must be the genetic material of cells
no macromolecule can store and transfer information
DNA was the transforming factor in Griffith's experiments
21
Before DNA was definitively shown to be the genetic material in cells, scientists proved that
DNA could be broken into small subunits.
DNA carried and made copies of information.
DNA could tolerate high temperatures.
DNA could be modified in response to the environment.
22
The monomer of the DNA polymer is
sugar-phosphate backbone
nucleic acid
nucleotide
nitrogenous base
23
Frederick Griffith used two strains of pneumonia in his experiments called
S-strain and R-strain (S-caused disease)
S-strain and T-strain (both were harmless)
S-strain and R-strain (S didn't grow in culture)
S-Strain and R-strain (R caused disease)
24
In eukaryotes, nearly all the DNA is found in the
histones
nucleus
cytoplasm
ribosomes
25
Bacteriophages are
coils of DNA.
enzymes.
viruses.
a form of bacteria.
26
A purine is different in a pyrimidine because
purines are adenine and thymine
purines are cytosine and guanine
purines form 3 hydrogen bonds with each other
purines have two rings instead of one
27
Rosalind Franklin used what technique to take photo 51?
radioactive markers
cell cultures
x-ray diffusion
x-ray crystallography
28
Which is not a class of macromolecule?
proteins
lipids
enzymes
nucelic acids
29
Which one is not a necessary role of DNA?
evaluating information
copying information
storing information
transmitting information

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