The appendix is a vestigial structure. Which structure does it extend from?
a. the rectum
b. the cecum
c. the stomach
d. the colon
Answer: b. the cecum
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The ________ is a viral respiratory disease that is preventable by a yearly vaccination
Fill in the blank(s) with correct word
If the population age structure of a country resembles a pyramid, with the pre-reproductive age group the largest proportion of the population, and the post-reproductive age group the smallest, this country can most likely be classified as one of the
A) stable populations. B) least developed countries. C) most developed countries. D) steady-state populations. E) expanding populations.
During translation, amino acids are carried to the ribosome by
A. tRNA. B. mRNA. C. snRNA. D. miRNA. E. rRNA.
You are studying a newly discovered prokaryotic microorganism and are attempting to determine whether it will be classified in the domain Bacteria or in the domain Archaea. All of the following would be helpful in making that distinction except ________.
A. type of membrane lipids B. presence or absence of double-stranded circular DNA genome C. presence or absence of peptidoglycan in cell walls D. sequence of small subunit ribosomal RNA