The phylogeny below represents a hypothesis for the evolutionary relationships among major groups of plants. If it is correct, in what order should we predict to find the fossils of these groups, in order from oldest to youngest?
A. flower group, conifer group, ferns, moss
group
B. conifer group, ferns, moss group, flower
group
C. ferns, moss group, conifer group, flower
group
D. moss group, ferns, daisy
E. ferns, conifer group, moss group
D
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What would you predict would happen in an area of the body where blood was relatively cool?
a. O2 would bind more readily to hemoglobin. b. CO2 would bind more readily to hemoglobin. c. O2 would release from hemoglobin. d. CO2 would release from hemoglobin. e. binding of O2 by hemoglobin would cease.
____ can indicate a fruit or developing root
cells. a. A b. B c. C d. D e. E
Active transport can only move a substance with a concentration gradient
1.True 2.False
What does troponin bind to, and what happens when it binds?
A. Ca2+; tropomyosin shifts B. T tubules; the sarcomere shortens C. acetylcholine; the sarcomere shortens D. ATP; tropomyosin returns to normal position E. tropomyosin; the sarcomere relaxes