Tailed bacterial viruses can be used as genetic engineering tools
Indicate whether the statement is true or false.
Answer: TRUE
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Host defense mechanisms—ways in which the body protects itself from pathogens—can be thought of as an army consisting of how many lines of defense?
A) 2 B) 3 C) 4 D) 5
Which mutation is an example of an adaptation?
a. A mutation results in decreased sperm count in humans. b. A mutation is found to be the cause of Alzheimer's Disease. c. A mutation results in hairless cats, reducing allergies in humans. d. A mutation increases the size of tomato plants. e. A mutation renders an individual immune to HIV infection.
Is it possible to be a "carrier" (phenotypically normal but capable of passing the allele to one's offspring) for color blindness?
a. Yes, women and men can be carriers. b. Yes, but only women can be carriers. c. Yes, but only men can be carriers. d. No
The enzyme nitrogenase is rather unique, as it specifically functions in the:a
absence of oxygen. b. absence of nitrogen. c. absence of carbon dioxide. d. presence of oxygen. e. presence of carbon dioxide.