Exam

Question 1

 Gene regulation

Answer 1

 The turning on and off of genes

Question 2

Operons Only exist in

Answer 2

Prokaryotes

Question 3

homeotic genes,

Answer 3

master control genes that determine the anatomy of the parts of the body.

Question 4

DNA microarrays

Answer 4

can gather data about which
genes are turned on or off in a particular cell.

Question 5

Nucleic acid hybridization

Answer 5

allows researchers to
identify cells in which a target gene is expressed.

Question 6

embryonic stem (ES) cells

Answer 6

Another way to clone, harvested from a blastocyst.

Question 7

therapeutic cloning

Answer 7

supply cells for
the repair of damaged or diseased organs.

Question 8

Proto-oncogenes

Answer 8

are normal genes that promote cell division

Question 9

The absence of growth factors can cause

Answer 9

Mutations

Question 10

p53 gene

Answer 10

In the absence of functional p53, cell division continues because the inhibitory protein is not
produced.

Question 11

Carcinogens

Answer 11

are cancer-causing agents that alter
DNA.

Question 12

Gene regulation

Answer 12

the turning on and off of genes.

Question 13

trp operon

Answer 13

Repressor active

Question 14

Lactose

Answer 14

Represor inactive

Question 15

DNA
packing.

Answer 15

Eukaryotic chromosomes undergo multiple levels of folding and coiling

Question 16

Barr body.

Answer 16

• An inactivated X chromosome

Question 17

Promoter and enhancers

Answer 17

control sequences in
eukaryotes.

Question 18

RNA interference (RNAi)

Answer 18

the use of miRNA to artificially control gene expression by injecting miRNAs into a cell to turn off a specific gene
sequence.

Question 19

G & c

Answer 19

Form 3 hydrogen bonds

Question 20

Translation

Answer 20

the synthesis of proteins under the
direction of RNA in the cytoplasm