A teratogen is any drug or chemical agent that causes ____________ development in a fetus upon exposure.
a. normal
b. stunted
c. rapid
d. abnormal
Answer: d. abnormal
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In salamander reproduction, another name for the fertilized egg is the __________
a. zygote b. gamete c. blastula d. gastrula
Which branch of this phylogenetic tree identifies Eukarya?
a. A b. B c. C d. D e. E
Which of the following is not a fundamental property of carbon?
A) Carbon-containing molecules are diverse. B) Carbon-containing molecules may form stereoisomers. C) Carbon-containing molecules are stable. D) Carbon has a valence of 4. E) Carbon atoms are most likely to form ionic bonds with one another.
Which of the following organelles is NOT involved with protein synthesis?
A. The rough endoplasmic reticulum B. The Golgi complex C. The nucleus D. The lysosomes E. All of these organelles are involved in protein synthesis