What is at the center of a heme molecule in a
hemoglobin?
a. a beta globin chain
b. an alpha globin chain
c. iron
d. nitrogen
e. another heme molecule
C
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The hormone released from the hypothalamus that stimulates release of LH and FSH in both the male and female is
A. human growth hormone. B. testosterone. C. gonadotropin-releasing hormone. D. antidiuretic hormone. E. epinephrine.
The region that divides a chromosome into two arms is the ______
A. centriole D. chromatid B. centromere E. centrum C. chromatin
A fish with a cartilaginous skeleton and paired fins would be:
a. an Actinopterygian. b. a Crinoid. c. a Cephalochordate. d. a Urochordate. e. a Chondrichthyean
This figure depicts the Briggs experiment, in which he tested the hypothesis that light causes auxin to move to the shaded side of seedlings. Based on what you remember about this experiment, which shoot do you expect to bend the most?
©2020 McGraw-Hill Education.
A. shoot A B. shoot B C. shoot D D. shoot C