Term
| Draw the secondary structure of the following RNA. The complementary sequences (inverted repeat) are underlined. 5' CAUGUUCAGCUCAUGUGAACGCU 3' |
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Definition
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Term
Underline two inverted repeats in the following RNA:
5' CUGAACUUCAGUCAAGCAAAGAGUUUGCACUG 3' |
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Definition
| 5' CUGAACUUCAGUCAAGCAAAGAGUUUGCACUG 3' |
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Term
| Name three processing steps undergone by messenger RNA. |
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Definition
| Polyadenylation, capping and splicing |
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Term
| What is the function of polyadenylate polymerase? |
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Definition
| It digests RNA and adds the poly-A tail to the end of mRNA. |
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Term
| What is unusual about the phosphodiester bond formed between mRNA and its 5' cap? |
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Definition
| The 5' cap is attached by an unusual 5' to 5' pyrophosphate linkage. |
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Term
| The parts of the hnRNA that are translated into protein (open reading frames) are the _______. |
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Definition
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Term
| The intervening sequences that interrupt protein coding sequences in hnRNA are _________. |
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Definition
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Term
| Proteins that bind to DNA to control gene expression are called _____ factors. |
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Definition
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Term
| The binding sites on DNA for proteins that control gene expression are _________ factors. |
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Definition
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Term
| How might a single mRNA produce more than one protein product? |
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Definition
| It may be alternatively spliced to produce different products. |
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Term
| The type of transcription producing RNA that is continually required and relatively abundant in the cell is called _________ transcription. |
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Definition
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Term
| A set of structural genes transcribed together on one polycistronic mRNA is called an __________. |
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Definition
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Term
Given the depiction of the lac operon in the text and in our powerpoints, indicate whether gene expression would be on or off in the following conditions (P=promoter,o=operator,R=repressor):
a. P+ O+ R+, no inducer
b. P+ O+ R+, inducer present
c. P- O+ R+, no inducer
d. P- O+ R+, inducer present |
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Definition
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Term
Given the depiction of the lac operon in the text and in our powerpoints, indicate whether gene expression would be on or off in the following conditions (P=promoter,o=operator,R=repressor):
e. P+ O- R+, no inducer
f. P+ O- R+, inducer present
g. P+ O+ R-, no inducer
h. P+ O+ R-, inducer present |
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Definition
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Term
Given the depiction of the lac operon in the text and in our powerpoints, indicate whether gene expression would be on or off in the following conditions (P=promoter,o=operator,R=repressor):
i. P- O- R+, no inducer
j. P- O- R+, inducer present
k. P- O+ R-, no inducer
l. P- O+ R-, inducer present |
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Definition
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Term
Given the depiction of the lac operon in the text and in our powerpoints, indicate whether gene expression would be on or off in the following conditions (P=promoter,o=operator,R=repressor):
m. P+ O- R-, no inducer
n. P+ O- R-, inducer present
o. P- O- R-, no inducer
p. P- O- R-, inducer present |
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Definition
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