When renin is released:
A) the conversion of angiotensin I to angiotensin II is inhibited, which facilitates excretion of sodium via the kidneys.
B) the lungs convert the plasma protein angiotensinogen to angiotensin I, which dilates the renal blood vessels and increases kidney function.
C) the pancreatic alpha cells secrete the hormone glucagon, which facilitates the conversion of glycogen to glucose in the liver.
D) the angiotensin-converting enzyme (ACE) converts angiotensin I to angiotensin II, which stimulates sodium resorption by the renal tubules
Answer: D) the angiotensin-converting enzyme (ACE) converts angiotensin I to angiotensin II, which stimulates sodium resorption by the renal tubules
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The transduction of sound waves into action potentials takes place _____
A) within the tectorial membrane as it is stimulated by the hair cells B) when hair cells are bent against the tectorial membrane, causing them to depolarize and release neurotransmitter that stimulates sensory neurons C) as the basilar membrane becomes more permeable to sodium ions and depolarizes, initiating an action potential in a sensory neuron D) as the basilar membrane vibrates at different frequencies in response to the varying volume of sounds E) within the middle ear as the vibrations are amplified by the malleus, incus, and stapes
The lipid layer that forms the foundation of cell membranes is primarily composed of molecules called __________
A. phospholipids B. fats C. proteins D. carbohydrates
Fast moving fishes tend to propel themselves by undulating their entire bodies
Indicate whether the statement is true or false
In some fungi, such as the bread mold Neurospora crassa, the arrangement of spores in the ascus directly reflects the order in which they were produced during meiosis. What is the collection of spores produced by meiosis in Neurospora crassa called?
A) unordered tetrad B) unordered octad C) ordered tetrad or ordered octad D) ordered pentad