Read slide 5. Which statement best explains the importance of both mechanical and chemical digestion in human and frogs?

Question

A.mechanical digestion only occurs in humans, while chemical digestion only occurs in frogs.
B.mechanical digestion breaks down physically, while chemical digestion uses enzymes to break down food into nutrients in both organisms.
C.both mechanical and chemical digestion are not necessary in humans and frogs as they have different digestive needs.
D. mechanical digestion uses enzymes to break down food into smaller pieces, and chemical digestion breaks down food physically.

Answer 1

The best statement that explains the importance of both mechanical and chemical digestion in humans and frogs is:

B. mechanical digestion breaks down physically, while chemical digestion uses enzymes to break down food into nutrients in both organisms.

This statement accurately describes the roles of mechanical and chemical digestion in both humans and frogs.

Answer 2

How does the structure of the digestive tract, beginning at mouth and ending at the anus, facilitate efficient digestion in both humans and frogs?
A. It allows for a one-way flow of food, preventing waste from being reabsorbed and ensuring complete digestion and elimination.
B. It enables food to be digested only chemically, without the need for mechanical breakdown.
C. This structure is unique to humans, while frogs have a different digestive tract arrangement.
D. It ensures that all nutrients are absorbed in the mouth, making the rest of the digestive tract unnecessary.

Answer 3

The statement that best describes how the structure of the digestive tract, beginning at the mouth and ending at the anus, facilitates efficient digestion in both humans and frogs is:

A. It allows for a one-way flow of food, preventing waste from being reabsorbed and ensuring complete digestion and elimination.

This explanation effectively highlights the importance of a linear digestive system in promoting efficient processing and elimination of food waste in both organisms.

Answer 4

Read slides 9-10. Which statement accurately describes a major difference between human and frog respiration?
A. Both humans and frogs use their diaphragm muscles to breath.
B. Frogs use their both muscles and skin sacs to breath, while humans use diaphragm muscles.
C. Frogs yawn to take in oxygen through their mouths, while humans only breath through their noses.
D. Humans and frogs both can breath through their skin.

Answer 5

The statement that accurately describes a major difference between human and frog respiration is:

B. Frogs use both muscles and skin sacs to breathe, while humans use diaphragm muscles.

This statement highlights the different mechanisms of respiration in frogs and humans, with frogs utilizing their skin as well as their muscular system for breathing, whereas humans primarily rely on diaphragm muscles for their respiratory process.

Answer 6

Read slides 9-10, why do frogs need to keep their skin moist for proper respiration, and how does this affect their habitat preferences?
A. To allow them to use their diaphragm muscles more effectively, leading them to dry areas.
B. To enhance their ability to yawn and take in more oxygen, making them prefer high altitudes.
C. To facilitate cutaneous respiration, which requires moist skin for oxygen and carbon dioxide exchange, making them prefer watery environments.
D. To improve the function of their throat sacs, leading them to prefer forested areas.

Answer 7

The correct answer is:

C. To facilitate cutaneous respiration, which requires moist skin for oxygen and carbon dioxide exchange, making them prefer watery environments.

Frogs depend on moist skin for cutaneous respiration, which allows them to exchange gases directly through their skin. This necessity influences their habitat choices, often leading them to prefer environments with adequate moisture, such as near water sources.

Answer 8

Based on slides 9-10, how do vessels in frog skin facilitate their unique respiratory process, and what might happen if their skin dries out?
A. The blood vessels in frog skin allow them to yawn more effectively; if their skin dries out, they would yawn less.
B. The blood vessels enable direct oxygen uptake and carbon dioxide release through the skin; if their skin dries out, cutaneous respiration would be impaired, affecting their oxygen intake.
C. The blood vessels are essential for diaphragm muscle function; if their skin dries out, their diaphragm would fall.
D. The blood vessels help frogs use their mouth muscles for breathing ; if their skin dries out, they would only be able to breath through their mouths.

Answer 9

The correct answer is:

B. The blood vessels enable direct oxygen uptake and carbon dioxide release through the skin; if their skin dries out, cutaneous respiration would be impaired, affecting their oxygen intake.

This statement accurately explains how the blood vessels in frog skin play a crucial role in their unique respiratory process and outlines the potential consequences if their skin dries out.

Answer 10

Read slides 11-13. Which of the following statements accurately describes a similarity between the circulatory systems of humans and frogs?
A. Both human and frogs have open circulatory systems.
B. Both human and frogs have four-chambered hearts.
C. Both human and frogs have closed circulatory systems with pulmonary and systemic circulation.
D. Both human and frogs mix deoxygenated and oxygenated blood in their heart.

Answer 11

The correct statement that accurately describes a similarity between the circulatory systems of humans and frogs is:

C. Both human and frogs have closed circulatory systems with pulmonary and systemic circulation.

This statement reflects that both humans and frogs possess closed circulatory systems, which include pathways for oxygenated and deoxygenated blood.