Members of this lineage of flatworms are parasites of vertebrates. They have a head modified into a
scolex with hooks and suckers for attaching to places like the intestinal wall of hosts. Most of their
body is a series of reproductive units called proglottids.
a. Trematoda
b. Turbellaria
c. Polychaeta
d. Cestoda
e. Hirudinea
D
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Antidiuretic hormone and oxytocin are products of
a. endocrine glands. b. neurosecretory cells. c. blood capillaries. d. the anterior pituitary. e. kidney and uterine wall cells, respectively.
One of the findings of the human genome project is that humans vary by
a. introns. b. exons. c. SNPs. d. codons. e. deviant bases.
Constitutive genes code for proteins that are needed for survival
__________________ Indicate whether the statement is true or false.
Even if utilized properly, what is the least effective means of birth control?
A. IUD B. Implant C. Foam D. Oral contraceptive E. Condom