All of the following have been produced by inserting human genes into bacteria EXCEPT
A) cancer-cell-killing hormones, which cure patients who have malignancies.
B) insulin, which treats diabetics.
C) growth hormone, which helps children grow normally.
D) clot-dissolving enzymes, which help heart attack victims recover.
E) blood-clotting enzymes, which treat hemophiliacs.
A
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In eukaryotic cells,
a. the bulk of the control of gene expression is at the level of transcription just like in prokaryotes b. mRNAs tend to remain stable for about the same length of time c. mRNAs can have their activities altered through modifications such as phosphorylation d. promoters of genes that are transcribed remain part of heterochromatin e. genes that are involved in similar processes are clustered together in operons
An inducible operon is usually controlled by:
a. an inducer molecule that keeps it in the "off" state. b. an active repressor that keeps it in the "off" state. c. being active at all times. d. allolactose. e. being turned "off," usually by the end product of the pathway
The trp operon is typically characterized as being both under negative control and repressible
Indicate whether the statement is true or false
The Platyhelminthes group includes roundworms, tapeworms, and flukes
Indicate whether the statement is true or false