microbiology

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Microbiology
Chapters 8, 9, 14, 20
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1

a frameshift is caused by ____________ mutation?

Deletion and insertion

2

transgenic animals are ___________ modified organisms.

genetically

3

A base substitution will lead to a frame-shift mutation.

false

4

the polymerase chain reaction is used to

amplify certain section of DNA

5

each nucleotide is composed of

one phosphate, one nitrogenous base, one sugar

6

the DNA site to which the repressor protein binds is the

operator

7

initiation, elongation, and termination are three stages in

translation

8

This is often used in forensic science to distinguish one sequence of DNA from another by comparing the sequence if the strands at specific loci

DNA fingerprinting

9

the enzyme that is used to join complementary DNA nucleotides together is

DNA polymerase

10

the enzyme that joins the ends of newly synthesized segments of DNA after the primers have been removed is:

DNA ligase

11

what type of mutation alters the base, but not the amino acid being coded for?

silent

12

the non-transcribed region of DNA to which RNA polymerase binds to initiate

promoter

13

the operon segment composed of the gene that codes for a protein repressor are called

regulator

14

the duplication of a cell's DNA is called

replication

15

DNA molecules that contain pieces of DNA from two different sources are defined as

recombinant DNA

16

A very common vector is a plasmid

TRUE

17

the site of translation is the

ribosome

18

the treatment of a disorder by inserting genetic material into an organism is called

gene therapy

19

a codon consists of 2 nucleotides

False

20

which of the following procedures would most likely be used to identify a specific

DNA fingerprinting

21

a mutation that changes a normal codon to a stop codon is called a

nonsense mutation

22

the RNA molecules that carry amino acid to the ribosomes during protein synthesis are called

Transfer RNA

23

The DNA of microorganisms is made up of subunits called

Nucleotides

24

biochemist Erwin Chargaff found that in DNA there was a special relationship between individual bases thar we now refer to as chargaff's rule hois obsrvation was

A=T and G=C

25

when patient tissue are trasnsfected with viruses carrying a needed , normal human gene the technique is called

gene therapy

26

Genetic engineering of plants has so far produced

  • plants with an increased nutri