The following diagram represents some of the puzzle pieces used in this exercise. a. Assembled in the form of the illustration, do they represent a (an) amino acid, base, portion of messenger RNA, or deoxyribonucleotide?
What will be an ideal response?
Portion of messenger RNA. b. Justify your answer. The sugar is ribose, as indicated by the presence of a single oxygen atom in the five-carbon ring. The base is uracil. Thus, the best answer of the choices is "a portion of messenger RNA."
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Which of the following fractures causes a break in a bone that stays in place?
a. compound c. greenstick b. subluxation d. simple
Sweating
a. causes vasodilation of the skin vessels. b. increases the insulative capacity of the skin so that less heat can be gained from the environment. c. is the only heat-loss mechanism available to the body when the environmental temperature is so high that a normal temperature gradient between the skin and the environment cannot be established. d. both (a) and (c) above. e. all of these answers.
Cellular swelling is likely to occur when blood cells are immersed in:
A) hypotonic solutions. B) hypertonic solutions. C) isotonic solutions. D) more concentrated solutions.
The muscle that medially rotates and flexes (unlocks) the knee joint is the
A) iliacus. B) gracilis. C) sartorius. D) soleus. E) popliteus.