The face of a sunflower turns to follow the sun as it moves across the sky. This is an example of
A. homeostasis.
B. reproduction.
C. metabolism.
D. response to stimuli.
E. development.
Answer: D
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An example of antagonistic hormones controlling homeostasis is _____
A) thyroxine and parathyroid hormone in calcium balance B) insulin and glucagon in glucose metabolism C) progestins and estrogens in sexual differentiation D) epinephrine and norepinephrine in fight-or-flight responses E) oxytocin and prolactin in milk production
What technique can help identify a disease gene quickly by narrowing the focus?
A) Compare the genome sequences of different species to identify conserved amino acids B) Filter the results to include only common polymorphisms C) Determine genotypes of parents and children at all SSR loci D) Use microarrays to identify silent mutations
The cell walls of fungi are composed mainly of
a. cellulose. b. lignin. c. chitin. d. pectin. e. protein.
Dehydration synthesis reactions are forms of ____
a. catabolism b. anabolism c. enzymatic deficiency d. intermediary metabolism e. denaturation