Question 1

In the nucleotide sequence ACTGG, what does C stand for?

Accepted Answer

A)  cysteine 
B)  cytotoxic 
C)  cytosine 
D)  chargaff 
E)  cytoplasm 
A)  cysteine 
B)  cytotoxic 
C)  cytosine 
D)  chargaff 
E)  cytoplasm

Question 2

In DNA replication, which type of molecule is a primer?

Accepted Answer

A)  nucleic acid 
B)  lipid 
C)  protein 
D)  carbohydrate 
E)  inorganic 
A)  nucleic acid 
B)  lipid 
C)  protein 
D)  carbohydrate 
E)  inorganic

Question 3

Which scientist(s) was/were the first to suggest that the proportion of adenine and guanine differs from one species to another?

Accepted Answer

A)  Watson and Crick 
B)  Wilkins 
C)  Hershey and Chase 
D)  Chargaff 
E)  Franklin 
A)  Watson and Crick 
B)  Wilkins 
C)  Hershey and Chase 
D)  Chargaff 
E)  Franklin

Question 4

Which male organism contains two identical sex chromosomes?

Accepted Answer

A)  turtles 
B)  birds 
C)  chimpanzees 
D)  dogs 
E)  lizards 
A)  turtles 
B)  birds 
C)  chimpanzees 
D)  dogs 
E)  lizards

Question 5

The process by which cells become specialized during development is called _____.

Accepted Answer

A)  somatic cell nuclear transfer 
B)  differentiation 
C)  development 
D)  mitosis 
E)  meiosis 
A)  somatic cell nuclear transfer 
B)  differentiation 
C)  development 
D)  mitosis 
E)  meiosis

Question 6

Why did most scientists assume that the bases of DNA should be on the outside of the helix?

Accepted Answer

A)  T he bases were easily digested by DNA cutting enzymes. 
B)  T he hydrogen bonding between sugar and phosphate would form a helix as well. 
C)  T he bases needed to be accessible for replication. 
D)  A  single-stranded DNA molecule would not be able to support the bases on the interior. 
E)  T he bases were hydrophobic. 
A)  T he bases were easily digested by DNA cutting enzymes. 
B)  T he hydrogen bonding between sugar and phosphate would form a helix as well. 
C)  T he bases needed to be accessible for replication. 
D)  A  single-stranded DNA molecule would not be able to support the bases on the interior. 
E)  T he bases were hydrophobic.

Question 7

Before a cell divides, it must ____ its genetic information.

Accepted Answer

A)  duplicate 
B)  translate 
C)  isolate 
D)  protect 
E)  distribute 
A)  duplicate 
B)  translate 
C)  isolate 
D)  protect 
E)  distribute

Question 8

In the Hershey-Chase experiments, the radioactive tracers 32P and 35S were used to track DNA and protein, respectively, because _____.

Accepted Answer

A)  bacterial DNA contains sulfur and viral DNA contains phosphorus 
B)  viral DNA contains sulfur and bacterial DNA contains phosphorus 
C)  only DNA contains phosphorus and only protein contains sulfur 
D)  DNA has more sulfur than protein and protein has more phosphorus than DNA 
E)  protein has more sulfur than DNA and DNA has more phosphorus than protein 
A)  bacterial DNA contains sulfur and viral DNA contains phosphorus 
B)  viral DNA contains sulfur and bacterial DNA contains phosphorus 
C)  only DNA contains phosphorus and only protein contains sulfur 
D)  DNA has more sulfur than protein and protein has more phosphorus than DNA 
E)  protein has more sulfur than DNA and DNA has more phosphorus than protein

Question 9

A eukaryotic chromosome consists of _____.

Accepted Answer

A)  DNA and lipids 
B)  RNA and proteins 
C)  DNA and proteins 
D)  DNA and carbohydrates 
E)  just DNA 
A)  DNA and lipids 
B)  RNA and proteins 
C)  DNA and proteins 
D)  DNA and carbohydrates 
E)  just DNA

Question 10

A somatic cell is defined as a(n) _____.

Accepted Answer

A)  blastocyst 
B)  egg 
C)  body cell 
D)  cloned cell 
E)  sperm cell 
A)  blastocyst 
B)  egg 
C)  body cell 
D)  cloned cell 
E)  sperm cell

Question 11

Body cells of human males contain _____.

Accepted Answer

A)  one X chromosome 
B)  two X chromosomes 
C)  one Y chromosomes 
D)  two Y chromosomes 
E)  one X and one Y chromosome 
A)  one X chromosome 
B)  two X chromosomes 
C)  one Y chromosomes 
D)  two Y chromosomes 
E)  one X and one Y chromosome

Question 12

Which technique did Rosalind Franklin use to determine many of the physical characteristics of DNA?

Accepted Answer

A)  scanning electron microscopy 
B)  transmission electron microscopy 
C)  recombinant DNA techniques 
D)  X -ray crystallography 
E)  DNA profiling 
A)  scanning electron microscopy 
B)  transmission electron microscopy 
C)  recombinant DNA techniques 
D)  X -ray crystallography 
E)  DNA profiling

Question 13

The connection point of two sister chromatids is called the _____.

Accepted Answer

A)  chromatid 
B)  chromatin 
C)  centriole 
D)  centrosome 
E)  centromere 
A)  chromatid 
B)  chromatin 
C)  centriole 
D)  centrosome 
E)  centromere

Question 14

Chemicals in tobacco smoke can cause _____.

Accepted Answer

A)  DNA to break into pieces. 
B)  mispairing of bases. 
C)  kinking in the DNA molecule. 
D)  the formation of nucleotide dimers. 
E)  covalent bonding between adjacent adenine bases. 
A)  DNA to break into pieces. 
B)  mispairing of bases. 
C)  kinking in the DNA molecule. 
D)  the formation of nucleotide dimers. 
E)  covalent bonding between adjacent adenine bases.

Question 15

Each DNA strand serves as a _____during DNA synthesis.

Accepted Answer

A)  replicate 
B)  substitute 
C)  template 
D)  source of nucleotides 
E)  primer 
A)  replicate 
B)  substitute 
C)  template 
D)  source of nucleotides 
E)  primer

Question 16

Butterflies Butterflies are diploid organisms. In these animals, the sex of an individual is determined by Z and W chromosomes. Use this information to answer the following question.
Which chromosomes are carried by a normal female butterfly?

Accepted Answer

A)  ZO 
B)  ZW 
C)  WW 
D)  WO 
E)  ZWW 
A)  ZO 
B)  ZW 
C)  WW 
D)  WO 
E)  ZWW

Exam 7: Dna Structure and Function

In the nucleotide sequence ACTGG, what does C stand for?

In DNA replication, which type of molecule is a primer?

Which scientist(s) was/were the first to suggest that the proportion of adenine and guanine differs from one species to another?

Which male organism contains two identical sex chromosomes?

The process by which cells become specialized during development is called _____.

Why did most scientists assume that the bases of DNA should be on the outside of the helix?

Before a cell divides, it must ____ its genetic information.

In the Hershey-Chase experiments, the radioactive tracers 32P and 35S were used to track DNA and protein, respectively, because _____.

A eukaryotic chromosome consists of _____.

A somatic cell is defined as a(n) _____.

Body cells of human males contain _____.

Which technique did Rosalind Franklin use to determine many of the physical characteristics of DNA?

The connection point of two sister chromatids is called the _____.

Chemicals in tobacco smoke can cause _____.

Each DNA strand serves as a _____during DNA synthesis.

Butterflies Butterflies are diploid organisms. In these animals, the sex of an individual is determined by Z and W chromosomes. Use this information to answer the following question. Which chromosomes are carried by a normal female butterfly?

Invitation to Biology

Molecules of Life

Cell Structure

Energy and Metabolism

Photosynthesis

Releasing Chemical Energy

Gene Expression and Control

How Cells Reproduce

Patterns of Inheritance

Biotechnology

Evidence of Evolution

Processes of Evolution

Prokaryotes, Protists, and Viruses

Plants and Fungi

Animal Evolution

Population Ecology

Communities and Ecosystems

The Biosphere and Human Effects

Animal Tissues and Organs

How Animals Move

Circulation and Respiration

Immunity

Digestion and Excretion

Neural Control and the Senses

Endocrine Control

Animal Reproduction and Development

Plant Form and Function

Life Cycles of Flowering Plants

Filters

In the Hershey-Chase experiments, the radioactive tracers ³²P and ³⁵S were used to track DNA and protein, respectively, because _____.