Practice check: Which option correctly completes the fact: which organ is primarily responsible for gas exchange in humans?

✅ C. Brain

Option A: Lungs Option B: Eyes Option C: Brain Option D: Bones Correct Answer : Brain Read more

✅ D. Earnst Munch

Option A: H-Van Mohl Option B: Dixon Option C: Vander wall. Option D: Earnst Munch Correct Answer : Earnst Munch Read more

✅ D. All of these

Option A: Cortisol Option B: Adrenaline Option C: ACTH Option D: All of these Correct Answer : All of these Read more

✅ A. chlorine

Option A: chlorine Option B: hydrogen Option C: oxygen Option D: carbon dioxide Correct Answer : chlorine Read more

✅ A. C-N link

Option A: C-N link Option B: C- O lind Option C: N-H link Option D: C-H link Correct Answer : C-N link Read more

✅ C. 20

Option A: 5 Option B: 10 Option C: 20 Option D: 40 Correct Answer : 20 Read more

✅ C. 350

Option A: 400 Option B: 375 Option C: 350 Option D: 325 Correct Answer : 350 Read more

✅ D. Jawless fishes

Option A: Frogs Option B: Reptiles Option C: Amphibinas Option D: Jawless fishes Correct Answer : Jawless fishes Read more