Why is the dialysate continually replaced in hemodialysis?
A. because it is lost by urination
B. because it biodegrades rapidly
C. because it is easily infected
D. because it enters the body and is absorbed
E. to maintain a favorable concentration gradient with the blood
Answer: E
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Which of the following is NOT a criterion for an organism's genetic material?
A. The genetic material must contain information necessary to construct a whole organism. B. The genetic material must be transmitted from parent to offspring. C. To transmit information the genetic material must be replicated. D. The genetic material must be dynamic, changing rapidly in response to changes in the environment. E. Genetic material must account for the known variation within each species and among different species.
Which of the following is not a process in the scientific method?
A. Belief in a preconceived idea B. Laboratory experimentation C. Formulation of a hypothesis D. Development of a theory E. Systematic observation
The region of the brain with the highest
concentration of neurons is the
a. hypothalamus. b. cerebrum. c. cerebellum. d. pons. e. medulla oblongata
All of the chemical reactions that take place within your body are known as
A. organismal structure. B. metabolism. C. irritability. D. adaptation.