Chapter 10

1.

1 point

The lytic stage of a cell is the

dormant phase

release of the virus from the cell

resting phase

reproductive stage

2.

1 point

If the sequence of DNA is AAA then the complementary tRNA anticodon will be

AAA

TTT

UUU

GGG

3.

1 point

The flow of information in a cell proceeds

from protein to RNA to DNA

from DNA to protein to RNA

Fron DNA to RNA to protien

from RNA to DNA to protein

4.

1 point

The process in which DNA is turned to RNA is called _____________, and it occurs in the ___________.

transcipton, cytoplasm

translation, cytoplasm

transcription, nucleus

translation, nucleus

5.

1 point

Which of the following is a nucleotide found in DNA?

deoxyribose+phosphate group+thymine

deoxyribose+phosphate group+uracil

ribose+phosphate group+cytosine

ribose+phosphate group+uracil

6.

1 point

DNA is copied during a process called

translation

replication

transcription

transformation

7.

1 point

In DNA replication, the sequence ACTGAGA will base pair with

ACTGAGA

TCACTCT

UCACUCU

TGACTCT

8.

1 point

If the three letter sequence of DNA is ACT, then the complementary mRNA is going to be

TGA

ACT

AGU

UGA

9.

1 point

tRNA molecules contain

anti-codons

codons

amino acids

enzymes

10.

1 point

The information carried by a DNA molecule is in

its amino acid sequence

the total number of nucleotides it contains

the order of the bases in the molecule

the sugars and phosphates forming its backbone

11.

1 point

RNA is ____________, where DNA is __________

single stranded, double stranded

found in the nucleus and cytoplasm, found only in nucleus

double stranded, single stranded

found in viruses, not

12.

1 point

The site of protein synthesis

cytoplasm

nucleus

cell membrane

ribosome

13.

1 point

During replication, each new molecule will contain ______ of the parent strand and _______ of the new strand.

50%, 50%

25%, 75%

100%, 0%

0%, 100%

14.

1 point

A mutagen is

the portion of a chromosome altered by a mutation

a gene that has been altered by a mutation

something that causes a mutation

any change in the nucleotide sequence of DNA

15.

1 point

Which of the following is not a key step in the "attack" of all viruses?

attachment

nucleic acid replication

death of the host cell

protein synthesis

16.

1 point

Which of the following occurs in the cytoplasm of a eukaryotic cell?

DNA replication and translation

transcription

DNA replication

translation

17.

1 point

In our protein synthesis activity the notecard represented

mRNA

protein

anticodon

tRNA

18.

1 point

The enzyme responsible for building new DNA strands during DNA replication is

RNA polymerase

DNA polymerase

helicase

reverse transcriptase

19.

1 point

Which of the following is not needed for DNA replication

enzymes

DNA

ribosomes

nucleotides

20.

1 point

RNA and DNA molecules are polymers made of subunits called

nucleotides

bases

nucleic acids

amino acids

21.

1 point

The start codon is always

TAC

UAC

AUG

AAA

22.

1 point

HIV is a

bacterial infection

DNA virus

retrovirus

RNA virus

23.

1 point

All viruses contain

DNA

RNA

capsid

cell membrane

24.

1 point

A reading frame mutation is the result of

insertion

deletion

substitution

inversion

25.

1 point

Unlike lytic viruses, lysogenic viruses do NOT

enter the lytic cycle

inject their genetic material into the host cell

lyse the host cell right away

infect host cells

26.

1 point

The process by which mRNA is turned into a polypeptide is called_________________ and occurs in the _____________.

transcription, nucleus

transcription, cytoplasm

translation, nucleus

translation, cytoplasm

27.

1 point

DNA replication occurs

whenever a cell needs RNA

to repair genes damaged by mutations

whenever a cell makes a protein

before a cell divides

28.

1 point

A three letter sequence found on mRNA is called

anti-codon

gene

chromosome

codon

29.

1 point

Chargaff stated that

the amount of C will always be equal to G

the amount of T will always be equal to C

the amount of U will always be equal to T

the amount of A will always equal amout of U

30.

1 point

When RNA is being made, the RNA base ____ always pairs with the base ____ in DNA

U...A

U...T

T...G

T...A

31.

1 point

The molecule responsible for carrying the amino acid to the polypeptide

DNA

mRNA

rRNA

tRNA

32.

1 point

There are __________ possible codons and _________ amino acids.

64, 20

50, 50

20, 64

unlimited, 20

33.

1 point

DNA and RNA differ in

the sugar making up nucleotide

the phosphate making up nucleotide

two different nitrogen bases

one different nitrogen bases

34.

1 point

A gene is

made of RNA

the same thing as a chromosome

made of protein

the information for making a polypeptide

35.

1 point

How do retroviruses, such as HIV, differ from other viruses?

they contain RNA that is used as a template to make DNA

they are much simpler than other viruses

they contain DNA tha is used as a template to make RNA

they contain nucleic acids that code from the making of proteins