The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane?
A. simple osmosis
B. active transport
C. simple diffusion
D. facilitated diffusion
D. facilitated diffusion
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Bacteria that contain complex internal membrane systems are more likely to divide by budding than by binary fission
Indicate whether the statement is true or false.
During bacterial conjugation, you wish to examine genes associated with the F plasmid of your bacterial strain of interest, as you feel that it possesses an additional gene. You are able to easily determine the presence or absence of the gene you believe to be associated with the plasmid. In order to investigate this possibility, you must allow conjugation between your strain and a compatible
strain that is A) an Hfr strain. B) another F+ strain. C) an F' strain. D) an F- strain. E) the same F+ strain.
Manta rays, sting rays, and eagle rays are similar to lampreys in that they have cartilaginous skeletons. How are they different from lampreys?
A. They have closed circulatory systems. B. They have gills. C. They have jaws. D. They have bony fin lobes. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about the evolution of the jaw? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Using Darwin's inferences, which population would be most similar to lizards on a dry, sandy island?
A) lizards in the rainforest on the mainland 20 miles away B) lizards on a rainforest island 200 miles farther out to sea C) lizards on a dry, sandy island 500 miles farther out to sea D) tortoises on the same dry, sandy island