The evolution of biochemical molecules started on Earth ____.
A. after the appearance of prokaryotic cells
B. long before any cells emerged
C. after the appearance of eukaryotic cells
D. after the appearance of eukaryotic cells but before the appearance of multicellular organisms
E. after the appearance of multicellular organisms
Answer: B
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Similarities at the neural circuit level between humans and ____ are easy to detect and therefore are
used in evolutionary studies examining the requirements for neural circuits.
a. rodents b. invertebrates c. fruit flies d. sea hares e. bees
Place the following events of an inflammatory
event in response to bacterial infection in proper order. 1. activated complement binds to bacteria 2. capillary permeability increased 3. phagocytes engulf bacteria 4. mast cell receptors bind to bacterial antigens 5. signaling molecules cause arterioles to widen
a. 4-5-2-1-3 b. 4-3-1-2-5 c. 5-2-1-4-3 d. 1-3-4-2-5 e. 5-2-4-1-3
Antidiuretic hormone and oxytocin are
products of a. exocrine glands. b. secretory neurons. c. blood capillaries. d. the anterior pituitary. e. kidney and uterine wall cells, respectively
Sucrose is composed of ____
a. two molecules of fructose b. two molecules of glucose c. a molecule of fructose and a molecule of glucose d. a molecule of fructose and a molecule of galactose e. two molecules of galactose