Human growth hormone (HGH) can be used to treat patients with pituitary dwarfism. Today, parents are getting HGH injections for their children to provide an advantage in sports or to enhance their appearance by making them taller
Based on what you know about the process of bone lengthening, what is the most appropriate age group to begin such injections? A) 3- to 6-year-olds
B) 7- to 10-year-olds
C) 18- to 21-year-olds
D) 21- to 30-year-olds
B
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Inflammation begins when mast cells in tissue release __________, which increases blood flow and
also makes capillaries leaky to phagocytes and plasma proteins. Fill in the blank(s) with the appropriate word(s).
Which of the following is NOT true concerning
plants? a. There are at least 295,000 kinds of existing plants. b. Plants affect the composition of the atmosphere. c. Flowering plants are the dominant group in most regions. d. The colonization of the land by plants made it possible for animals to live and evolve on land. e. Plants resupply atmospheric oxygen by splitting CO2 during photosynthesis.
Compared to humoral immunity, cell-mediated immunity is more likely to defend against which of the following?
A) virally infected cells only B) transplanted tissue only C) cancer cells only D) both virally-infected cells and cancer cells E) virally-infected cells, cancer cells, and transplanted tissue
In prokaryotes, control of gene expression is mainly at the level of ____.
A. transcription B. transcript processing C. transport D. translation E. post-translation