Which statement most accurately describes the deuterostomes?
a. The first opening on the embryo surface becomes the mouth.
b. Their food and wastes enter/exit through the same body opening.
c. They have an incomplete digestive system.
d. They all have radial symmetry.
e. Their mouth develops from the second embryonic opening and the first opening becomes the anus.
e
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Which health problem(s) are due to environmental factors?
A. Spina bifida B. Fetal alcohol syndrome C. Down syndrome D. Spina bifida and fetal alcohol syndrome E. Fetal alcohol syndrome and Down syndrome
The major function of a receptor is to
a. control the autonomic functions of the body. b. stabilize the internal environment to achieve homeostasis. c. produce responses to the various stimuli the body receives. d. give organisms awareness and sensitivity to their environment by converting a stimulus to an action potential (nerve impulse). e. interpret the sensations it receives from the environment
Certain new cancer therapies deal with the inhibition of angiogenesis (formation of blood vessels). How would inhibition of blood vessel formation be beneficial in terms of treating cancer?
What will be an ideal response?
Algae are plants.
a. true b. false