The body’s main regulator of the internal environment is the ____
a. anterior pituitary gland
b. hypothalamus
c. medulla oblongata
d. cerebellum
e. pons
ANSWER: b
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Prior to the 1940s, many biologists thought that ____, being made up of 20 types of ____, was the best
candidate for genetic material.
a. protein; amino acids b. DNA; amino acids c. protein; nucleotides d. DNA; nucleotides e. RNA; nucleotides
Which of the following proteins involved in muscle contraction is also an ATPase?
A. Myosin B. Tropomyosin C. Troponin D. Actin E. Titin
Accessory cells in nervous tissue are called
a. neurons. b. neuroglia. c. chondrocytes. d. formed elements. e. nerves.
As global temperatures increase, evidence suggests that ribulose 1, 5-biphosphate carboxylase/oxygenase (rubisco) is likely to denature and photosynthesis rates will decrease.
Answer the following statement true (T) or false (F)