37) It is believed that the coelacant lungfish represent a crucial link betwen o

Question

37) It is believed that the coelacant lungfish represent a crucial link betwen other fishes and tetrapoxds. What is the feature in these fish in support of hypothesis? A) Their fins have sketetal and muscular hs and in the diets of some animals becaase A) these animals are not able to major B) the nsitrients are structures similar to amphibian lbs B) They have highly evolved nervous and C) only those animals use those nutrients D) only certain foods contain them circulatory systems C) They have lungs and are able to breathe 42) Food being digested in the stomach is in a highly acidic environment. When the food s released from the stomach into the small intestine, why is the environment no longer air when water is scarce. water for reproduction. 38) Large proteins such as albumin remain in D) Like amphibians, they are tied to the A) When pepsinogen activates pepsin, one result is the neutralization of stomach acid in the stomach capillaries rather than diffusing out resulting in the B) Secretin increases the flow of bicarbonate ions from the pancreas into the small intestine to neutralize the stomach acid. A) loss of fluid from capillaries 8) los of csmotic presure in the capillaries C) development of an osmotic pressure C) Trypsinogen is activated, thus difference across capillary walls D) increased diffusion of hemoglobin neutralizing the stomach acid. D) Bile salts from the gallbladder neutralize the stomach acid. 39) Countercurrent exchange in the fish gill helps to maximize 43) If a molecule of carbon dioxide released into A) osmosis B) active transport C) diffusion the blood in your left toe is exhaled from your nose, it must pass through all of the following EXCEPT A) the right atrium B) the pulmonary vein C) an alveolus D) blood pressure 40) When the digestion and absorption of organic carbohydrates results in more energy-rich molecules than are immediately required by an animal, the excess is A) eliminated in the feces B) stored as starch in the liver C) stored as glycogen in the liver and muscles D) oxidized and converted to ATP

Explanation / Answer

37) The correct option is A. Their fins have skeletal and muscular structures similar to amphibian limbs.

Coelacanths and lungfish represent a crucial link between other fishes and tetrapods. Their fins have skeletal and muscular structures like amphibian limbs, which supports this hypothesis.

38) The correct option is C. development of an osmotic pressure difference across capillary walls.

Large proteins such as albumin remain in capillaries rather than diffusing out, which result in the formation of an osmotic pressure difference across capillary walls.

39) The correct option is C. diffusion.

Countercurrent exchange in the fish gill helps to maximize through diffusion, because the oxygen concentration is less in the blood than in the water, which flows over the gills, the oxygen from the water naturally diffuses into the blood.

40) The correct option is C. stored as glycogen in the liver and muscles.

When the digestion and absorption of organic carbohydrates results in more energy-rich molecules than are immediately required by an animal. It is stored as glycogen in the liver and muscles of the animal.

Related Questions

Navigate

• Browse (All)
• Browse 3
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.