Cones
a. detect coarse perception of movement.
b. detect very dim light.
c. detect changes in light intensity across the visual field in dark places.
d. contain disks packed with the visual pigment rhodopsin.
e. detect bright light.
E
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You and a classmate are discussing early experiments in genetics, and you state that Avery, MacLeod, and McCarty provided the first evidence that DNA carries genetic information. Your classmate argues that Griffith was the first to demonstrate this. Which statement best defends your argument?
A. Because Avery, MacLeod, and McCarty did their experiments after those done by Griffith, they had much more information regarding the structure and function of DNA. B. Although Griffith first demonstrated transformation, Avery, MacLeod, and McCarty provided evidence that DNA rather than protein or RNA was the transforming agent. C. DNA used by Avery, MacLeod and McCarty was extracted solely from transformed strains of pneumococci, while Griffith used native pneunococcal strains. D. Enzymes were used in the experiments carried out by Avery, MacLeod, and McCarty while Griffith transformed cells chemically or by using heat. E. Avery, MacLeod, and McCarty worked with purified DNA extracts while Griffith worked with bacterial strains.
In the process of glycolysis, glucose is cleaved into a pair of three-carbon ________ molecules.
A. acetyl CoA B. lactate C. oxaloacetate D. pyruvate E. alcohol
Resource partitioning can often be seen in similar species that occupy the same geographic area. These species avoid competition by living in different portions of the habitat or by utilizing different food or other resources and are called ________ species.
A. fundamental B. allopatric C. sympatric D. exploitative E. competitive
A phylogenetic event horizon is:
a. a point in the future in which species will diversify. b. a phylogeny based on extinct species. c. the point at which life started. d. a point in the history of life beyond which phylogenetic analysis cannot see.