Exam 44: Osmoregulation and Excretion

Antidiuretic hormone (ADH) and the renin-angiotensin-aldosterone system (RAAS) work together in maintaining osmoregulatory homeostasis through which of the following ways?

Materials are returned to the blood from the filtrate by which of the following processes?

African lungfish, which are often found in small stagnant pools of fresh water, produce urea as a nitrogenous waste. What is the advantage of this adaptation?

If ATP production in a human kidney was suddenly halted, urine production would ________.

In humans, the transport epithelial cells in the ascending loop of Henle ________.

Excessive formation of uric acid crystals in humans leads to ________.

Which nitrogenous waste has the greatest number of nitrogen atoms?

The transfer of fluid from the glomerulus to Bowman's capsule ________.

Within a normally functioning kidney, red blood cells can be found in ________.

Terrestrial organisms lose water through evaporation. In what ecosystem might an entomologist find a good study organism to examine the prevention of water loss?

The advantage of excreting nitrogenous wastes as urea rather than as ammonia is that ________.

Single-celled Paramecium live in pond water (a hypotonic environment relative to the cytosol). They have a structural feature, a contractile vacuole, which enables them to osmoregulate. If sucrose or saline was added to the pond water in different concentrations (in millimolars, mM), under which conditions would you expect the contractile vacuole to be most active?

In animals, nitrogenous wastes are produced mostly from the catabolism of ________.

Processing of filtrate in the proximal and distal tubules ________.

Which of the following is characteristic of juxtamedullary nephrons?

Which process in the nephron is least selective?

Excretory organs known as Malpighian tubules are present in ________.

A primary reason that the kidneys have one of the highest metabolic rates of all body organs is that ________.

After blood flow is artificially reduced at one kidney, you would expect that kidney to secrete more of the hormone known as ________.

To maintain homeostasis, freshwater fish must ________.