Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

3. Energy & Cell Processes

Enzymes

Anatomy & Physiology

3. Energy & Cell Processes

Enzymes

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which characteristics are likely associated with an enzyme isolated from a human stomach where conditions are strongly acidic.

An enzyme that functions properly at 70 degrees Fahrenheit and at a neutral pH.

An enzyme that functions properly at 98 degrees Fahrenheit and at an acidic pH.

An enzyme that functions properly at 98 degrees Fahrenheit and at a neutral pH.

An enzyme that functions properly at 70 degrees Fahrenheit and at an acidic pH.

Previous problemNext problem

Verified step by step guidance

Understand the environment of the human stomach: The stomach is known for its acidic environment, primarily due to the presence of hydrochloric acid, which creates a pH typically around 1.5 to 3.5.

Consider the optimal temperature for human enzymes: Human enzymes generally function best at body temperature, which is approximately 98.6 degrees Fahrenheit (37 degrees Celsius).

Identify the characteristics of enzymes in acidic conditions: Enzymes that are adapted to function in the stomach are likely to be stable and active in acidic conditions, meaning they are designed to work optimally at low pH levels.

Evaluate the given options based on temperature and pH: The correct enzyme characteristics should align with the stomach's acidic environment and the typical human body temperature.

Select the option that matches both the acidic pH and the optimal temperature for human enzymes: The enzyme should function properly at 98 degrees Fahrenheit and at an acidic pH, reflecting the conditions in the human stomach.