The __________ biome has the greatest species richness of the terrestrial biomes

a. tropical rainforest
b. savanna
c. grassland
d. chaparral
e. temperate deciduous forest


A

Biology & Microbiology

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Smooth muscles can be activated by all of the following except:

A. the somatic nervous system. B. hormones. C. nitric oxide. D. pH. E. stretch of the muscle.

Biology & Microbiology

You want to examine the structure of the protein coat of a virus by microscopy. Which microscope is your best choice, and why?

A. The scanning electron microscope-it has excellent resolution and magnification, much higher than a light microscope, and can clearly visualize viruses. B. An atomic force microscope-this has the highest resolution and magnification of the microscopes we discussed. Here, we want to visualize a subcomponent of the virus particles, so we need the best value for resolution and magnification we can possibly achieve. C. A fluorescent microscope-this will let us tag the protein coat with colored dyes in order to visualize it using this light microscope at 1000x. D. A bright-field light microscope-of course, we'll need to stain the viruses before we can visualize them against the bright white background at 1000x total magnification.

Biology & Microbiology

The steady charge difference across the plasma membrane is called the

a. action potential. b. energy potential. c. electrolyte potential. d. resting membrane potential. e. kinetic potential.

Biology & Microbiology

Which cells of the pancreas produce somatostatin?

a. alpha cells b. beta cells c. delta cells d. F cells e. gamma cells

Biology & Microbiology