The many lamellae in the gills of fish improve respiratory efficiency by ______.  

A.  changing the diffusion constant
B.  decreasing the distance for diffusion
C.  increasing the surface area for diffusion
D.  increasing the concentration difference


C.  increasing the surface area for diffusion

Biology & Microbiology

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Wetlands ________

A) are important in improving water quality B) include rivers, streams, ponds, and lakes C) are bodies of swiftly flowing water D) are found in the intertidal zone

Biology & Microbiology

Use the figure below to match the pigments' description with their absorption spectra. Figure 6.5C

A. Closely related to chlorophyll a B. Potent antioxidant and signaling molecule found in carrots C. Accessory pigment in red flowers D. Allows algae in deep sea waters to survive by absorbing green and blue-green light E. Main pigment in photosynthetic plants

Biology & Microbiology

In the absence of sunlight, plants are not able to engage in the Calvin cycle due to a lack of

a. ATP. b. NADPH. c. oxygen. d. Both a and c are correct.

Biology & Microbiology

A plasmid contains a multiple cloning site inside the coding region of the lacZ gene and also contains an ampicillin resistance gene at a separate locus. When cells are transformed with a successfully recombinant plasmid containing a piece of DNA cloned

into the multiple cloning site, what color will the colonies be when grown on an agar plate containing ampicillin and X-gal? A) blue B) colonies will not grow C) green D) clear E) white

Biology & Microbiology