The cardiovascular system is highly protected from microbial infection because
A. it is so close to the skin that even minor injuries could lead to major infection.
B. it is the only body system that has no normal microbiota.
C. it is the only body system that is liquid-based, i.e., with blood.
D. failure to do so will result in a systemic infection.
Answer: D
You might also like to view...
In addition to the defining features of chordates, ALL craniates are distinguished by which of the following combination of features?
A. a cranium and a gnathostome B. a cranium and neural crest C. a cranium and protostome development D. a cranium and an ostracoderm E. a cranium and an operculum
Extensive data from hospitals have shown that infants born with intermediate weights
are the ones most likely to survive. This is a classic example of which type of selection? a. directional selection b. stabilizing selection c. disruptive selection d. natural selection e. no selection
What is the function of GTP in translation?
A. GTP supplies phosphates and energy to make ATP from ADP. B. GTP energizes the formation of the initiation complex, using initiation factors. C. GTP separates the small and large subunits of the ribosome at the stop codon. D. GTP hydrolyzes to provide phosphate groups for tRNA binding. E. GTP hydrolyzes to provide energy for making peptide bonds.
Which of the following is the conversion of ammonium ion+ into nitrogen gas (N2)?
A) assimilation B) anammox C) nitrogen fixation D) nitrification E) denitrification