Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Please help me with the multiple choice question below - it is based on genomics/developmental biology.

### Question 4: Molecular Biology

**Question:**  
Zinc fingers or helix-loop-helix arrangements are characteristic of members of what class of molecules?

**Options:**  
A. Proto-oncogenes  
B. Signaling molecules  
C. Receptors  
D. Cell adhesion molecules  
E. Transcription factors

**Explanation:**  
This question assesses knowledge in molecular biology, specifically the structural motifs found in certain classes of molecules. Zinc fingers and helix-loop-helix are common structural motifs that enable proteins to bind to DNA, RNA, or other proteins, often playing a critical role in gene expression regulation.

**Answer Key:**  
E. Transcription factors
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Transcribed Image Text:### Question 4: Molecular Biology **Question:** Zinc fingers or helix-loop-helix arrangements are characteristic of members of what class of molecules? **Options:** A. Proto-oncogenes B. Signaling molecules C. Receptors D. Cell adhesion molecules E. Transcription factors **Explanation:** This question assesses knowledge in molecular biology, specifically the structural motifs found in certain classes of molecules. Zinc fingers and helix-loop-helix are common structural motifs that enable proteins to bind to DNA, RNA, or other proteins, often playing a critical role in gene expression regulation. **Answer Key:** E. Transcription factors
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