Engulfing-phagocytic cells of innate immunity of vertebrates include _____. I) neutrophils II) macrophages III) dendritic cells IV) natural killer cells
A) I and III
B) II and IV
C) I and IV
D) I, II, and III
D
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Among the following, which number of carbons would be the most likely number of carbons for a
fatty acid from a living organism?
a. 8 b. 13 c. 16 d. 19 e. 26
Four of the five answers listed below are
characteristics of cnidarians. Select the EXCEPTION.
a. larvae b. polyp c. gill slits d. medusa e. nematocysts
An advantage of chorionic villus sampling (compared with amniocentesis) is that:a
chorionic villus sampling detects a much wider range of genetic defects than does amniocentesis. b. chorionic villus sampling is much less expensive than is amniocentesis. c. chorionic villus sampling is much less invasive than amniocentesis. d. chorionic villus sampling is much easier to perform than amniocentesis. e. chorionic villus sampling can be performed much earlier than amniocentesis.
Which of the following statements is a logical consequence of the second law of thermodynamics?
A) If the entropy of a system increases, there must be a corresponding decrease in the entropy of the universe. B) If there is an increase in the energy of a system, there must be a corresponding decrease in the energy of the rest of the universe. C) Every energy transfer requires activation energy from the environment. D) Every chemical reaction must increase the total entropy of the universe. E) Energy can be transferred or transformed, but it cannot be created or destroyed.