Which of the following is not involved in the regulation of the cell cycle?
A) cyclins
B) internal and external signals
C) growth factors
D) check points
E) caspases
Ans: E) caspases
Biology & Microbiology
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The amount of energy in a system that cannot be used to perform work is referred to as ____
Fill in the blank with the appropriate word.
Biology & Microbiology
The possibility of an abscess should be considered if this bacterial group is isolated in the blood:
a. Clostridium septicum. b. Bacteroides fragilis. c. Streptococcus anginosus. d. Aeromonas hydrophila.
Biology & Microbiology
The macromolecule composed of amino acids is a
A. lipid. B. carbohydrate. C. nucleic acid. D. protein. E. steroid.
Biology & Microbiology
For the isotopes of any element, the _____ number will always be the same.
A) mass B) atomic C) superscript D) neutron
Biology & Microbiology