Which of the following produces antibiotics?
a) B-cells
b) Orthomxyovirus
c) Plasma cells
d) Pseudomonas aeruginosa
Answer: d) Pseudomonas aeruginosa
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If you wanted to install lights to grow plants indoors, the type of light would you want to use is
A. gamma rays, because it has high energy wavelengths. B. visible light, because it has low energy wavelengths. C. microwaves, because it has low energy wavelengths. D. infrared, because it has high energy wavelengths. E. ultraviolet, because it has high energy wavelengths.
Some restriction endonucleases cut the DNA in such a way that short, single stranded regions are
created. We call these regions
a. hydrogen-bonding ends b. sticky ends c. tacky ends d. blunt ends e. jagged ends
Which of the following statements about the botulism toxin is NOT true?
a. It is an exotoxin. b. It is produced by the bacterium Clostridium. c. It may be found as a contaminant in poorly prepared food. d. Its brand name is Botox. e. It causes muscles to contract.
A closed or blocked reading frame is __________
a. one that can not be transcribed at all b. a reading frame that is damaged and therefore can not be read c. a reading frame that cannot be translated into protein because termination codons occur frequently d. heterochromatin that can not be transcribed e. None of the above