Microbiology

56 cards

MIcrobial Genetics

Created Dec 7, 2006
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	Side A	Side B
1	In DNA replication, the leading strand is formed	from 5' to 3' in a long strand
2	In DNA replication, the lagging strand is formed	in short segments called Ozaki fragments
3	Replication occurs during	the S phase of interphase
4	The production of DNA on the leading strand is catalyzed by the enzyme	DNA polymerase
5	The mRNA chain is formed in which direction	5' to 3'
6	The _____________ is used to transcribe mRNA	DNA coding strand
7	RNA transcription is catalyzed by	RNA polymerase
8	The enzyme which carries out mRNA production binds at an area on the DNA strand called the	promoter
9	The region of the DNA which acts as a switch to turn transcription on or off is called the	operator
10	The gene which codes for a substance to block protein synthesis is the __________ gene	regulator
11	The protein which controls the "switch" is the _______ protein	repressor
12	In the "inducible operon," transcription is blocked when the	repressor binds tot he operator
13	In the "inducible operon," transcription occurs when the	polymerase binds to the promoter
14	In the "repressible operon," a _________ substance is needed to activate the process	corepressor
15	Protein is assembled by the	ribosome
16	A ________ carries amino acids in the cytoplasm	tRNA strand
17	If a change in genetic information which specifies a diffrent amino acid is called a _________...	missense
18	If A replaces the C in UGC, the result is a ______________ mutation	nonsense
19	A mutation in which CAU becomes CAC is a _____________ mutation	neutral
20	If G replaces the C in UGC, the result is a ____________ mutation	missense
21	The process in which segments of DNA can move to another piece of DNA is called	transposition
22	Base pairs may be altered by	chemical mutagens & ionizing radiation
23	Naked, soluable DNA from the surroundings may be introduced into a cell by	transformation
24	the transfer of DNA between cells is called	conjugation
25	The transfer of DNA by means of viruses which become incorporated into the host cell occurs...	transduction
26	A small, extrachromosomal piece of DNA is called a	plasmid
27	A technique which uses an electric current to seperate DNA or protein fragments is called	electrophoresis
28	The major source of enzymes used in biotechnology is	bacteria
29	The vaccina (cowpox) virus is being used experimently to insert recombinant plasmids into	animals
30	The use of recombinant DNA technology in the treatment of genetic diseases is currently only...	False
31	Biotechnology is currently being used to	control oil spills, create new vaccines, detect genetic diseases, identify criminals
32	A technique used to amplify a minute amount of DNA is	polymerase chain reaction
33	The most frequent use of recombinant DNA at present is in	manufacturing protein
34	Enzymes used to cut the DNA at specific points are called	restricition endonucleases
35	Enzymes used to recombine the dna are called	DNA ligases
36	Which of the following is true of viruses	contain nucleic acids
37	Viruses have been found to parasitize all kingdoms of living things	True
38	Viruses are too small to see witht he electron microscope	False
39	The capsid of a virus is made of	protein
40	The present system of viral classification begins with the determination of	nucleic acid type
41	Which of the following is not a current method of cultivating viruses	nutrient media
42	The nucleic acid in a virus is	double-stranded DNA, double-stranded RNA, single-stranded DNA, single-stranded RNA
43	The viral envelope is made by the	host cell plasma membrane
44	A ______ virus destroys the host cell	lytic
45	A ____ virus is incorporated into the host genome	lysogenic
46	Nonenveloped viruses are released from the host cell by	lysis
47	Which type of virus uses reverse transcriptase to make DNA	retrovirus
48	Which of the following is the messenger RNA strand	ss + Rna
49	During the eclipse stage, the host cell first produce	viral enzymes
50	Oncogenes are known to be involved in the production of	cancer
51	A "slow virus" is the causative agent of the disease	SSPE
52	Which of the following is a disease due to a virus which has a latent period	shingles
53	A proteinous infectious agent (prion) is thought to cause the disease	bovine spongiform encephalopathy
54	Epstein-Barr virus had been implicated in	Burkitts lymphoma
55	A very short strand of nucleic acid with no protein coat is the pathogen called a	viroid
56	The __________ virus used the enzyme reverse transcriptase to make a strand of DNA from RNA...	HIV