A recombinant DNA molecule is produced artificially and contains sequences ________
A) from bacteria only
B) from yeast only
C) from unrelated organisms
D) from cells that have been chemically modified
E) from prokaryotic genes
C
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Fermentation occurs in:
A. anaerobic organisms only. B. some aerobic organisms, such as yeast, even in the presence of oxygen. C. only in bacteria, fungi, and plants.
Which statement concerning REM sleep is true?
a. During the REM stage, delta waves are emitted. b. Most people spend almost all of their sleep time in the REM stage. c. The preoptic area of the hypothalamus stimulates REM sleep. d. During REM sleep, blood flow to the entire brain decreases. e. REM sleep is absolutely necessary, as a lack of this stage causes anxiety and irritability.
If Georgina takes a drug that increases the effects of norepinephrine, what changes would we see in the basic activities of her body?
What will be an ideal response?
In the CRISPR system, the targeted DNA sequence is
A. in the palindromic repeats. B. in the cas gene. C. between CRISPR regions. D. in the spacer of a CRISPR region. E. in a vector.