Antidiuretic hormone (ADH) decreases the amount of water absorbed by the kidneys and increases the volume of urine output.
a. true
b. false
Answer: b. false
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The direction of genetic information transfer in a retrovirus (such as HIV) is
A. DNA to mRNA to protein. B. RNA to DNA to mRNA to protein. C. DNA to protein. D. RNA to mRNA to protein. E. RNA to protein. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about the HIV infection cycle? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Diatoms can best be described as
a. unicellular and autotrophic. b. unicellular and heterotrophic. c. multicellular and autotrophic. d. multicellular and heterotrophic. e. multicellular and parasitic.
An example of natural active immunity would be
A. chickenpox infection, followed by lifelong immunity. B. chickenpox vaccine triggering extended immunity to chickenpox. C. giving a person immune serum globulins to chickenpox virus after exposure to the disease. D. a fetus acquiring maternal IgG to the chickenpox virus across the placenta.
Which of the following characterize B cells?
A. They are manufactured and mature in the bone marrow. B. They function in antibody mediated immunity against bacteria. C. They directly recognize antigens and undergo clonal selection. D. All of the choices characterize B cells. E. None of the choices characterize B cells.