NOT the biotech final

The order of amino acids on a polypeptide chain is encoded by

mRNA

how can gene expression controlled in prokaryotic cells

operons

all of the following may be uses to induce changes at a particular locus on a DNA molecule except:

exposure to low temperature

how ofter will cells divide under ideal growing conditions

every 20 minutes

how do DNA molecules vary from one species to another

number of genes and non-coding genes

all of the following regulate gene expression in eukaryotic except

operators

what is a possible outcome of site-specific mutagenesis

all of these

all of the following are reasons some people need recombinat protein therapeutics except

they need stronger nails and hair

prokaryotic DNA is contained in

the cytoplasm

which of the following is an example of sterile technique

treating a lab bench with disinfectant

a typical E. coli genome contains about _ genes

2000

In eukaryotic cells, after an mRNA has been transcribed,

interons are removed

all of the following are reasons to be TRIS during an electrophoresis except

to stain molecules

R plasmids are useful for both bacteria and scientist because they contain

one or more antibiotic resistance gene

ehich stain causes DNA to glow orange when exposed to UV light

ethidium bromide

a linear oiece of DNA was cut with a restricion enzyme and four bands were visualized after elecrophoresis. how many cuts were made

3

eukaryotic gene expression can be increased by

inhance moleculars

which agarose concentration would work best for separating very large molecules

0.8%

when a regulatory molecule bonds to an operator

gene expression is turned off

most if the DNA in humans is

spacer DNA within and between genes

what is agar

solid media on which bacteria grows

how is packaging of DNA different in eukaryotes and prokaryotes

eukaryotes have more chromosomes and each is linear

genes code for

all of these

semi-conservative replication means

each new DNA molecule has half of the old one

a replications fork is

an area where DNA seperates into two strands and new DNA synthesis occurs

the antiparrellel nature of double stranded DNA means

both a and b are correct

the sequence of nitrogenous bases on one strand of DNA may determine the sequence of

amino acids in a protein molecule

How many hydrogen bonds hold base pairs together?

2 between A and T and 3 between G and C