Which vitamin functions in blood clot formation?
a. A
b. E
c. K
d. B
e. D
c
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What is the correct sequence of events in the lytic cycle of a bacteriophage infection?
A. Attachement, Viral DNA penetration into host cell, Integration of viral DNA into host cell DNA, Biosynthesis, Maturation, Release B. Endocytosis of virion, Uncoating, Maturation, and Release C. Attachment, Fusion of envelope and host cell membrane, Biosynthesis, Maturation, and Release D. Attachement, Viral DNA penetration, Biosynthesis, Maturation and Release
According to Darwin's theories and observations on "the struggle for existence", organisms better suited to an environment have a greater probability of surviving and will also:
a) lead a long, satisfying life. b) leave more offspring. c) have larger bodies. d) have fewer predators. e) be faster runners.
The offspring of a cross between two individuals that breed true for different forms of a trait are __________.
Fill in the blank(s) with the appropriate word(s).
Which of the following explains why normal cells grown in a petri dish tend to stop growing once they have covered the bottom of the dish?
A) The cells lack cyclin. B) Contact with other cells stops cell growth. C) The petri dish inhibits cell growth. D) Most cells grown in petri dishes have a defective p53.