Which type of muscle fibers is known as dark meat in chickens?
a. White
b. Both red and white
c. None of these choices
d. Red
e. Neither red nor white
d
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An integrated set of hypotheses that together explain a broader set of observations is considered a(n)
A) experiment. B) educated guess. C) fact. D) theory.
Which statement relates to secondary growth in plants?
A) Monocots can undergo true secondary growth to increase the width of their stems. B) Cork, cork cambium, and vascular cambium make up the bark of a woody plant. C) Xylem cells make up the wood of a tree, whereas phloem cells are located in the bark of a tree. D) True secondary growth in coconut palm trees makes them woody yet incredibly flexible.
A key step in the evolution of vascular plants was the ability to produce ____, a strengthening polymer in the walls of
cells that function for support and conduction a. cutin b. chitin c. lignin d. actin e. cellulose
Thymosin is a hormone produced by the thymus gland. If production of thymosin is inhibited, then
A) bone density decreases. B) progesterone production stops. C) T cells do not develop. D) blood glucose levels fluctuate wildly. E) dehydration occurs.