Which category of genetic changes does not lead to the formation of oncogenes?
A) translocations B) point mutations
C) correct DNA repair D) copy number changes
Answer: C
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The entrance into the cavity formed during gastrulation in sea stars and frogs is called the
(a) archenteron. (b) blastocoel. (c) blastocyst. (d) blastopore.
The conical sea floor vents that spout sulfide-rich, super-heated water at temperatures up to 300ºC are called
A. yellow smokers. B. hydrothermal vents. C. warm vents. D. hot vents.
The complement system functions to ____ and ____
a. mobilize B cells; initiate antibody production b. help the innate immune system; turn on expression of T-cell receptor protein genes c. destroy invading cells; provide a physical barrier against pathogens d. destroy invading cells; guide phagocytes to the infection site e. destroy viruses; guide phagocytes to the site of inflammation
What is true about the data in the accompanying figure?
 A) The solid line represents a reaction that has been catalyzed by an enzyme. B) The dashed line represents a reaction that includes an enzyme and a cofactor. C) Both lines represent endergonic reactions. D) The energy of the products is higher than the energy of the reactants.