Which group of vertebrates will lack a pulmonary circuit?
A. fish
B. annelids
C. frogs
D. birds
E. mammals
Answer: A
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Starting from the outside and moving in toward the center, which list gives the correct order of tissues in the stem of a
young tree?
a. secondary phloem, primary phloem, primary xylem, secondary xylem b. primary xylem, secondary xylem, secondary phloem, primary phloem c. primary phloem, secondary xylem, secondary phloem, primary xylem d. secondary phloem, primary xylem, secondary xylem, primary phloem e. primary phloem, secondary phloem, secondary xylem, primary xylem
Which of the following is secreted by cells in the juxtaglomerular apparatus in response to a
significant drop in blood pressure or blood volume?
a. atrial natriuretic factor b. renin c. aldosterone d. antidiuretic hormone e. angiotensin
The pituitary gland is controlled by the
a. pons. b. corpus callosum. c. medulla. d. thalamus. e. hypothalamus.
Amylose, cellulose, and glycogen are all polysaccharides composed of glucose. What makes each of these polysaccharides unique in spite of the fact that all are composed solely of glucose?
What will be an ideal response?