Compared to urine, the filtrate that first enters a nephron tubule
A) contains less water.
B) contains red blood cells.
C) has more salts.
D) does not contain urea.
Answer: C
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As arthropods grow, they shed their exoskeletons at periodic intervals, allowing growth before formation of a new exoskeleton. This process of shedding the exoskeleton is known as:
A. expansion. B. a growth spurt. C. differentiation. D. molting.
Under the Linnean system of classification which level is an immediate subcategory of Phylum?
a. Species b. Kingdom c. Family d. Order e. Class
In some cases, when an insect begins feeding on a leaf the plant responds by activating a signaling
pathway that results in the production of ____, which disrupt an insect's capacity to digest proteins.
a. gibberellins b. lipases c. chitinases d. protease inhibitors e. cytokinins
Hydropower and wind power are similar in that both are
A) dependent in part on fossil fuels B) nonrenewable energy sources C) sources of environmental pollution D) renewable energy sources E) commonly used worldwide as power sources