____ magnifies light passing directly through a specimen. Staining with a dye is typically used to
enhance contrast and visualization of cellular structures.
a. Confocal laser scanning microscopy
b. Phase-contrast microscopy
c. Bright field microscopy
d. Scanning electron microscopy
e. Fluorescence microscopy
C
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Which of the following choices is not an effect of cortisol?
a. controls sodium and water reabsorption in the kidneys b. signals skeletal muscles to degrade proteins c. induces liver cells to break down glycogen d. triggers adipose cells to degrade fats
One hundred thousand years ago a population of rodent species migrated into a new environment and experienced little competition for resources. Today, this species is still surviving in this environment, but competition from other species has decreased its choices for food and has limited the species to a smaller home range. When the species first migrated into this new environment it filled its
_________________ niche, whereas, 100,000 years later it experienced its ____________ niche. a. realized; fundamental b. fundamental; realized c. intrinsic; realized d. extrinsic; fundamental e. intrinsic; extrinsic
Bones are wrapped in ____ tissue(s)
a. adipose b. dense connective c. epithelial d. loose connective e. all of these
Ecological efficiency is usually higher in aquatic ecosystems than on land, in part because photosynthetic protists do not make ____, as most land plants do.
A. chlorophyll B. ATP C. lignin D. cellulose E. organic material