An acoelomate is an animal that
A. has a coelom.
B. has a pseudocoelom.
C. has both a coelom and a pseudocoelom.
D. has neither a coelom nor a pseudocoelom.
E. has a coelom during early development but later loses it.
D. has neither a coelom nor a pseudocoelom.
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The specimen of choice to collect in suspected cases of respiratory syncytial virus (RSV) is:
a. buccal mucosa. b. sputum. c. throat. d. nasopharyngeal.
The spinal cord is part of the ________ nervous system.
A. somatic B. autonomic C. peripheral D. central
What are two commonly used DNA landmarks for mapping human genes?
What will be an ideal response?
Which of the following statements about the brain is NOT correct?
A. The medulla oblongata has reflex centers for vomiting, coughing, sneezing, and swallowing. B. The thalamus relays sensory input from lower brain areas to the cerebrum. C. The hypothalamus is concerned with homeostasis and regulation of thirst, hunger, and blood pressure. D. The cerebellum functions in muscle coordination, posture, and balance. E. The pineal gland secretes serotonin, which is involved in mood changes.