Which of the following is not a major class of growth factors?
A. Vitamins
B. Nucleic acids
C. Purines and pyrimidines
D. Amino acids
Answer: B
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The use of which commonly employed medication may lead to the development of a vaginal yeast
infection? a. aspirin b. pain relievers c. decongestants d. antibiotics e. antacids
What technique can be used to detect genetic defects in early stage embryos, prior to implantation?
a. genetic screening b. chorionic villus sampling c. PGD d. amniocentesis e. micromanipulation
Why are estuaries and coral reefs more productive than deeper regions of the ocean?
A. They have more access to light and nutrients. B. They have more access to light and lower salt concentrations in the water. C. They have more access to light D. They have more access to nutrients and lower salt concentrations in the water. E. They have lower salt concentrations in the water.
The human genome has how many pairs of autosomal chromosomes?
A) 44 pairs B) 22 pairs C) 24 pairs D) 46 pairs E) 23 pairs