Ephedrine is a stimulant that is derived from a member of the phylum
A. Cycadophyta.
B. Pterophyta.
C. Hepaticophyta.
D. Gnetophyta.
Answer: D
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The connection point of two sister chromatids
is called the
a. chromatid. b. chromatin. c. centriole. d. centrosome. e. centromere
In humans, normal skin pigmentation is influenced by a dominant gene (C), which allows
pigmentation to develop. All individuals who are homozygous for the recessive allele (c) are unable to produce an enzyme needed for melanin formation and are therefore referred to as albino. Two normal parents produce an albino child. What are the chances that the next child will be an albino? What will be an ideal response?
Which type of neuron lies entirely within the central nervous system?
A. motor neuron B. sensory neuron C. interneuron
Endocrine communication involves hormones that reach their target cells via the bloodstream, whereas ________ communication involves local hormones that affect nearby cells
Fill in the blank(s) with correct word