Among the following choices, the most concentrated urine is excreted by
A) desert tortoises.
B) frogs.
C) birds.
D) kangaroo rats.
E) humans.
Answer: D
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AP Biology Chapter 32
- Positive feedback differs from negative feedback in that
- Which process in the nephron is least selective?
- Connective tissues typically have
- Antidiuretic hormone (ADH) functions at the cellular level by
- Low selectivity of solute movement is a characteristic of
- A primary reason that the kidneys have one of the highest metabolic rates of all body organs is that
- The reason that the steroid hormone aldosterone affects only a small number of cells in the body is that
- Prolactin stimulates mammary gland growth and development in mammals and regulates salt and water balance in freshwater fish. Many scientists think that this wide range of functions indicates that prolactin
- Ammonia
- Interstitial fluid is
- Examine Figure 32.1. Near a goose's abdomen, the countercurrent arrangement of the arterial and venous blood vessels causes
- Unlike most bony fishes, sharks maintain body fluids that are isoosmotic to seawater, so they are considered by many to be osmoconformers. Nonetheless, these sharks osmoregulate at least partially by
- If a person loses a large amount of water in a short period of time, he or she may die from dehydration. ADH can help reduce water loss through its interaction with its target cells in the
- Fight-or-flight reactions include activation of
- During mammalian labor and delivery, the contraction of uterine muscles is enhanced by oxytocin. This is an example of
- Compared to wetland mammals, water conservation in mammals of arid regions is enhanced by having more
- A human who has no access to fresh water but is forced to drink seawater instead
- The thin horizontal arrows in Figure 32.1 show that
- Excretory structures known as protonephridia are present in
- The nitrogenous waste that requires the most energy to produce is
- The nourishment, insulation, and support for neurons is the result of activity by the
- Blood is best classified as connective tissue because
- For hormones that homeostatically regulate cellular functions,
- Urea is produced in the
- Increased ADH secretion is likely after