Plants, fungi and bacterial all have:
A. nuclei
B. cell walls
C. chloroplasts
D. lysosomes
E. mitochondria
B
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Which of the following is a characteristic of octopuses and squid?
a. an open circulatory system b. a closed circulatory system c. the presence of mesohyl d. a single heart
All of the following are involved in PCR EXCEPT
a. free nucleotides. b DNA templates. c. high temperature. d. RNA polymerase. e. low temperature.
Which of the following statements regarding chemical agents is correct?
A) Chemical agents are manmade substances that destroy living organisms. B) There is no effective antidote for any chemical agent at the present time. C) Chemical agents can be weaponized only in the form of liquid or vapor. D) The majority of chemical agents used by terrorists are naturally occurring.
The lambda immunity region includes
a. the repressor gene cI. b. the positive regulator gene cIII. c. the positive regulator gene cII. d. the antiterminator gene N. e. All of the above.