Q. No.What will be seen in a fish living in a marine environment?
1. They do not drink the water in their surroundings.
2. They drink the water in their surroundings.
3. They move monovalent ions into their bodies through active transport across their epithelial outer tissue.
4. They move monovalent ions out of their bodies through active transport across their epithelial outer tissue.
1. They do not drink the water in their surroundings.
2. They drink the water in their surroundings.
3. They move monovalent ions into their bodies through active transport across their epithelial outer tissue.
4. They move monovalent ions out of their bodies through active transport across their epithelial outer tissue.
The urine concentrating ability of mammals and birds is correlated with the length of their:
| 1. | ureters | 2. | proximal convoluted tubules |
| 3. | distal convoluted tubules | 4. | loops of Henle |
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The part of the nephron that is least permeable to water is the:
| 1. ascending limb of the loop of Henle | 2. descending limb of the loop of Henle |
| 3. collecting duct | 4. proximal convoluted tubule |
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Glomerular ultrafiltrate would normally not contain:
1. plasma proteins
2. glucose and amino acids
3. water
4. urea
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The region of human kidney where you expect to find maximum osmolarity is:
1. at the top of the renal cortex
2. at the bottom of the renal cortex
3. at the top of the renal medulla
4. at the bottom of the renal medulla
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Sodium is the principal cation in blood. If the blood concentration of sodium ions gets below normal:
1. blood volume increases and blood pressure decreases
2. water drains from the collecting duct
3. blood volume and blood pressure decrease
4. ADH secretion increases
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