How do Ctenophora differ from Cnidaria?
a. They have a true coelom.
b. They are non-motile.
c. They have rotation symmetry.
d. They have bi-radial symmetry.
c. They have rotation symmetry.
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Which of the following is true of "type 1 diabetes"?
a. Insulin levels are near normal. b. Target cells do not respond to insulin. c. It is the more common form of diabetes. d. It is thought to be an autoimmune disease. e. It usually occurs in middle-aged people.
A buildup of H+ in the blood will lead to ____
a. alkalosis b. acidosis c. excess calcium d. excess carbon dioxide e. a higher than normal pH
Joint (synovial) cavity
What will be an ideal response?
Archaea and bacteria diverged:
a. about 3 billion years ago. b. about 100,000 millions years ago. c. about 1 billion years ago. d. about 2 billion years ago. e. about 10,000 million years ago.