Consider the differences in heart structure between frogs and humans. How might these differences influence the physical activity levels and endurance of each organism?(1 point)

Question

Responses

The human heart's four chambers and double circulation probably support higher physical activity levels and greater endurance compared to the frog's three-chambered heart and incomplete double circulation.

The frog's heart structure allows for higher physical activity levels and greater endurance than the human heart.


Both heart structures support the same levels of physical activity and endurance.

The frog's heart structure supports higher endurance but lower physical activity levels compared to the human heart.

Answer 1

The correct response is:

The human heart's four chambers and double circulation probably support higher physical activity levels and greater endurance compared to the frog's three-chambered heart and incomplete double circulation.

This is because the human heart, with its four chambers, efficiently separates oxygenated from deoxygenated blood and supports a higher metabolic rate, which is beneficial for sustained physical activity and endurance. In contrast, the frog's three-chambered heart leads to mixing of blood and less efficient oxygenation, which limits its physical activity levels and endurance compared to humans.