Most of the water that enters the plant:
a. leaves the plant through the root system
b. is lost through transpiration
c. remains in the plant to form the high concentration of water in plant tissue
d. remains in the plant to function in translocation
e. is used up in cellular metabolism
b
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The protein of T2 bacteriophage is labeled with 35S and the DNA with 32P. Where would one detect most of the 32P if the T2 bacteriophage were allowed to infect the bacteria?
A. on the phage coat surrounding the T2 bacteriophage B. on the membrane of the infected bacteria C. inside the T2 bacteriophage capsid D. inside the infected bacteria E. The 32P would be equally distributed within the T2 bacteriophage and infected bacteria.
In mammals, urine drains out of the ____ into a collecting duct
a. distal convoluted tubule b. Bowman's capsule c. descending segment of the loop of Henle d. proximal convoluted tubule e. ascending segment of the loop of Henle
In a certain bird species, clutch size (the number of eggs laid by a female in one breeding season) ranges from four to eight, and the most frequent clutch size is six. This phenomenon is an example of
a. sexual selection. b. stabilizing selection. c. disruptive selection. d. directional selection. e. artificial selection.
What type of immunity results from transfer of antibodies from one individual to a susceptible individual by means of injection?
A) innate immunity B) naturally acquired active immunity C) naturally acquired passive immunity D) artificially acquired active immunity E) artificially acquired passive immunity