Matter is composed of:
A. molecules
B. atoms
C. mass
D. energy
Answer: B
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Frameshift mutations (select all that apply)
A. cause the insertion or deletion of a single amino acid from the polypeptide chain. B. result in premature stop codons. C. change the entire amino acid sequence downstream from the site of the insertion or deletion. D. are known risk factors in most forms of cancer, including breast and colon cancer. E. are known risk factors in breast cancer, but not colon cancer.
Which of the following diseases may be caused by Chlamydia trachomatis?
A) inclusion conjunctivitis B) nongonococcal urethritis (NGU) C) trachoma D) all of these choices
Koch's postulates can be applied to every infectious disease to identify its causative pathogen.
Answer the following statement true (T) or false (F)
Which of the following is not found in the cytoskeleton?
A. intermediate filaments B. spindle fibers C. actin filaments D. microfilaments E. none of the above