What is a gene?
A) a type of eukaryotic cell
B) an organelle that houses DNA
C) a type of prokaryotic cell
D) a unit of inheritance
D
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For water fleas of the genus Daphnia, switching from a pattern of asexual reproduction to sexual reproduction coincides with _____
A) environmental conditions becoming more favorable for offspring B) greater abundance of food resources for offspring C) periods of temperature or food stresses on adults D) completion of puberty E) exhaustion of an individual's supply of eggs
Which hominoids may have given rise to the apes and humans?
a. Pan b. Pongo c. Aegyptopithecus d. Dryopithecines e. Australopithecus
While examining a rock surface, you have discovered an interesting new organism. Which of the following criteria will allow you to classify the organism as belonging to Bacteria but not Archaea or Eukarya?
A) Cell walls are made primarily of peptidoglycan. B) The organism does not have nucleus. C) The lipids in its plasma membrane consist of glycerol bonded to straight-chain fatty acids. D) It can survive at a temperature over 100°C.
CRISPR systems have been used in cancer treatments to
A. deliver radiation to individual cells within large, dense tumors. B. inactivate faulty genes that are responsible for the cell cycle, causing them to slow down or stop cell division. C. activate genes that are responsible for the cell cycle, causing them to speed up cell division to replace cells lost to other cancer treatments. D. deliver packets of chemicals to tumors via genetically engineered red blood cells.