Which of the following produces both hormones and enzymes?
Ileum
Pancreas
Gall bladder
Kidney
Correct answer is B
The pancreas has two main functions: an exocrine function that helps in digestion and an endocrine function that regulates blood sugar.
I, II, III, IV
I, IV, III, II
II, III, IV, I
IV, III, II, I
Correct answer is D
Evolutionary sequence in vertebrates: Fishes → Amphibians → Reptiles → Birds → Mammals.
IV → III → II → I
The two key cations involved in the action potential of nervous transmissions are
Na+ and Fe2+
Mg2+ and K+
Na+ and K+
Fe2+ and Mg2+
Correct answer is C
The Na⁺ / K⁺ - helps maintain resting potential, affects transport, and regulates cellular volume.
If a DNA strand has a base sequence TCA, its complementary strand must be
ATG
TAG
GAT
AGT
Correct answer is D
The complementary strand for TCA is AGT
| A | T |
| G | C |
| T | A |
| C | G |
| A | T |
| T | A |
| G | C |
| A | T |
the tank was too small compared to the large ocean
the body cells of the fish swelled and burst as a result of the hypotonic fresh water
the body cells of the fish shrank as their sap was hypertonic to the freshwater
there was no food in the tank, so the fish starved
Correct answer is B
Saltwater fish can't survive in freshwater because their bodies are highly concentrated of salt solution (too much for freshwater). The water would flow into their body until all their cells accumulate so much water that they bloat and die eventually.