Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:**Question 3: Which substrate binds to the following enzymes?**
a. peroxidase -
b. lactase –
c. pepsin –
d. amylase –
e. DNA polymerase -
---
**Explanation:**
This is a question aimed at understanding enzyme-substrate specificity. Enzymes are biological catalysts that speed up chemical reactions in living organisms. Each enzyme specifically binds to its substrate to catalyze a reaction. Below are the pairings for the question:
a. **Peroxidase** typically binds to peroxides (such as hydrogen peroxide) to catalyze their breakdown.
b. **Lactase** binds to lactose, a disaccharide sugar found in milk, to break it down into glucose and galactose.
c. **Pepsin** binds to proteins, breaking them down into smaller peptides in the stomach.
d. **Amylase** binds to starches (polysaccharides) and catalyzes their breakdown into simpler sugars like maltose and glucose.
e. **DNA polymerase** binds to DNA nucleotides to synthesize a new DNA strand during replication.
This content helps in grasping the fundamentals of enzyme-substrate interactions, which is crucial for understanding biochemical processes in biology.
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