The stability of a synovial joint is due largely to the presence of calcium salts
Indicate whether the statement is true or false
FALSE
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Transition mutations can result from
A. chemical modification of an existing base in the DNA so that in the next round of replication it will pair differently from the unmodified base. B. a small insertion or deletion. C. incorporation of a base analog that exhibits different base-pairing properties from the base it replaces and chemical modification of an existing base in the DNA so that in the next round of replication it will pair differently from the unmodified base. D. incorporation of a base analog that exhibits different base-pairing properties from the base it replaces.
Chemotherapeutic agents that are artificially produced are most specifically referred to as ________.
A. antimicrobial agents B. synthetic drugs C. semisynthetic drugs D. antibiotics
The diploid chromosome number of an organism is usually represented as 2n. Humans have a diploid chromosome number of 46. What would be the expected haploid chromosome number in a human?
A) 24 B) 12 C) 23 D) 92 E) 16
In which of the following do the mucous membranes serve as a portal of entry for disease?
A) A pathogen crosses from the mother to the fetus by way of the placenta. B) A person rubs the eye with contaminated fingers and the pathogen is washed into the nasal cavity by way of tears. C) A person is bitten by a mosquito that carries the malaria parasite. D) Fungi digest the outer layer of the skin. E) A person receives an injection with a contaminated needle.