week 11

Question 1

the scientific field that studies whole genomes is called

Answer 1

genomics

Question 2

introns are

Answer 2

noncoding DNA sequences

Question 3

“sticky ends” are produced as a result of the action of

Answer 3

a restriction enzyme

Question 4

the human genome project has the potential to

Answer 4

play a role in all of the choices listed here

Question 5

of these steps which one offucs earliest in the process of producing recominant DNA

Answer 5

the same restrictin enzyme is used to isolate the gene of intrest and to cut the lasmid DNA

Question 6

the process of making multiple copies of a gene by inserting it into a host genome and culturing the host is an exampl of

Answer 6

gene cloning

Question 7

how can a single RNA transcript be translated into different polypedptides

Answer 7

there is more than one way to splice an RNA transcript

Question 8

cutting DNA with a particular restriction enzyme produces DNA fragments that can be separated by

Answer 8

gel electrophoresis

Question 9

Which of the following turns off transcritptin by binding to the operator

Answer 9

repressors

Question 10

transgenic animals are currently used

Answer 10

to produce potentially useful proteins

Question 11

your friend asks you a question about your biology class, what is genetic engineering, you answier is

Answer 11

genetic engineering is moving genes from organism to another

Question 12

to make a clone-a genetically identical organism- from a mammaliam cell, the cell must

Answer 12

be dedifferentiatied

Question 13

in bacteria, what name given to a clustr of genes with related function, along with their control sequences

Answer 13

operon

Question 14

in the futre, scientists hope to be able to compare whole genomes of indvidulas, a new field called

Answer 14

comparative genomics

Question 15

which of the following is the best dfinition of recominant DNA

Answer 15

DNA that carries genes from two different sources

Question 16

polymerase chain reactions results in

Answer 16

multiple copies of a specific gene

Question 17

one of the most potent enviormental carcingogens is

Answer 17

UV radiation

Question 18

Which enzyme is used to bind DNA fragments together

Answer 18

DNA ligase

Question 19

of the following, which is the last step in the production of recombinant DNA plasmid

Answer 19

using DNA ligase to join DNA fragments

Question 20

Gel electrophoresis separates DNA fragments on the basis of differences in their

Answer 20

length

Question 21

in a DNA strand

Answer 21

A=T and C=G

Question 22

which best describes the end result of translation

Answer 22

a polypeptide chain

Question 23

___ occurs when genetic information is copied from DNA to make RNA

Answer 23

replication

Question 24

in a DNA double helix adenine pairs with___ and guanine paris with___

Answer 24

thymine….cytosine

Question 25

messanger RNA carries codes and uses them to assemble amino acids into a protein by a process called

Answer 25

translation

Question 26

evidence for the spiral nature of DNA came from

Answer 26

x-ray crystallography studies

Question 27

___ read mRNA and are the sire where amino acids are bound together

Answer 27

ribosomes

Question 28

nucelotides are made of

Answer 28

a sugar moleucle, a phosphare group and a nitrogenous base

Question 29

if you had DNA that read ATG and this changed through a mutation to GTG what type of mutation would this be

Answer 29

substitution

Question 30

which best descrbies the end result of transcription

Answer 30

a mRNA strand

Question 31

in prokaryotic cells that are nto actively transcribing a ___ with be bound to the ___

Answer 31

repressor protein... promoter

Question 32

a ___ is to bacteria as a ___ is to animal cells

Answer 32

prophase...provirus

Question 33

a codon would be found on the ___mRNA strand

Answer 33

mRNA strand

Question 34

DNA replication occurs in the __ stage of the cell cycle

Answer 34

S

Question 35

If you had a DNA strand that read ACTG what would the mRNA strand read

Answer 35

UGAC

Question 36

Which scientists first suggested that the DNA structure was a double helix

Answer 36

Rosalind Franklin

Question 37

DNA is

Answer 37

a coiled double chain of nucleotides

Question 38

RNA contains the nitrogenous base ___ instead of ___, which is only found in DNA

Answer 38

uracil...thymine

Question 39

If one strand of a DNA double helix has the sequence GTCCAT, what is the sequence of the other strand

Answer 39

CAGGTA

Question 40

the backbone of DNA consists of

Answer 40

a repeating sugar-phosphate sugar phosphate pattern