Which characteristics clearly separate Eukarya from Bacteria, but not Eukarya from Archaea?
What will be an ideal response?
ANSWER: The presence of multiple types of RNA polymerase, methionine as the first amino acid
placed in proteins, and aminoacyl-tRNA synthetases.
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If a population of diploid organisms has three different alleles for a particular gene, how many different genotypes are possible?
A. 2 B. 3 C. 6 D. 9 E. 12
Haversian (central) canals are characteristic of which tissue?
a. adipose b. bone c. cartilage d. epithelial e. muscular
You have identified an enzyme that appears to be involved in the addition of palmityl group (a fatty acid) to certain proteins. Knowing that palmitoylated proteins are usually targeted for delivery to the plasma membrane, in which organelles might this enzyme be expressed?
A. Endoplasmic reticulum and ribosomes B. Golgi apparatus and endoplasmic reticulum C. Endoplasmic reticulum and nucleus D. Golgi apparatus and nucleus
Sexually transmitted diseases are a major cause of infertility. Knowing this, what method of birth control would you think is best for reducing infertility rates?
A. diaphragm B. condoms C. IUDs D. oral contraceptives E. vasectomy