(Q).
Answer the following question given this paragraph: Nephrons and Vessels The renal artery first divides into segmental arteries, followed by further branching to form interlobar arteries that pass through the renal columns to reach the cortex (Figure 25.9). The interlobar arteries, in turn, branch into arcuate arteries, cortical radiate arteries, and then into afferent arterioles. The afferent arterioles service about 1.3 million nephrons in each kidney. Q: The afferent arterioles service about 1.3 million of what in each kidney? Choices: - dendrites - axons - neurons - nephrons A:
(A).
nephrons

(Q).
Answer the following question given this paragraph: Water has remarkable properties. Water expands when it freezes, even though all other substances contract. This means that in the winter ice on a pond or lake will float. Water has high surface tension because polar molecules tend to stick together. That's why drops stick together or some bugs can walk on the surface of a pond. Without water, life might not be able to exist on Earth. If it did exist, it would not be as diverse or as complex. Q: What can water's high surface tension be attributed t? Choices: - territorial molecules sticking together - molecules create a thin film-like substance - electric impulses in atoms - polar molecules sticking together A:
(A).
polar molecules sticking together

(Q).
Answer the following question given this paragraph: invertebrates produce uric acid. Animals that secrete urea as the primary nitrogenous waste material are called ureotelic animals. Q: The primary nitrogenous waste material secreted by ureotelic animals is what substance? Choices: - ammonia - carbon - nitrate - urea A:
(A).
urea