What is the hormone that promotes cell elongation by changing plant cell walls so they can expand due
to the force of turgor pressure?
a. abscisic acid
b. auxin
c. cytokinin
d. ethylene
e. gibberellin
B
Biology & Microbiology
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A person with neither anti-A nor anti-B antibodies in circulation has which of blood type?
A) A B) B C) AB D) O
Biology & Microbiology
The production of random evolutionary changes in small breeding populations is known as
a. gene flow. b. genetic drift. c. disruptive selection. d. mutation. e. natural selection.
Biology & Microbiology
The homeotic gene Hoxc6 is the vertebrate version of ____, which causes the formation of legs in fruit flies.
A. Dlx B. Thoracia C. RHO D. CCR5 E. antennapedia
Biology & Microbiology
What are the primary functions of the plasma membrane in all cells?
What will be an ideal response?
Biology & Microbiology