Cryptococcus neoformans is a gram-negative cocci with a thick capsule
Indicate whether the statement is true or false
FALSE
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An extreme case of Rh disease is known as
a. hemolytic disease of the newborn. b. Down syndrome. c. Tay-Sachs disease. d. sickle cell anemia. e. polycythemia.
Avery, MacLeod, and McCarty (1944) demonstrated that DNA was the genetic material by treating heat-killed Streptococcus pneumoniae S (smooth) strain with DNase,
thereby preventing transfer of the "transforming substance" from the killed S strain to the live R (rough) strain when the two were mixed together and injected into mice. Another way that one could demonstrate transformation in bacteria would be to extract DNA from A) an R strain and mix it with cells of an S strain. B) both S and R strains and mix it to allow recombination to take place. C) an ampicillin-sensitive strain and mix it with cells of an ampicillin-resistant strain. D) an S strain and mix it with cells of an R strain. E) None of the above are correct.
The first law of thermodynamics states:
A. that energy is constantly being created by entropy events B. that energy can be used and then destroyed because of entropy's actions on it C. that energy can be changed from one form to another, but cannot be created or destroyed D. that energy can be destroyed while it is producing entropy
As compared to the circulatory system of most fishes, the circulatory system of adult amphibians has the advantage of
A. complete separation between oxygenated and deoxygenated blood. B. a single circuit. C. a pocket of the gut that serves as an air bladder. D. partially separate circuits for gas exchange and systemic delivery of blood. E. a four-chambered heart.