Basement Membranes Contain Type IV Collagen, a Nonfibrillar Collagen Organized

question 14

Multiple Choice

Basement membranes contain type IV collagen, a nonfibrillar collagen organized in a flattened network. The type IV collagen trimer has some interspersed nonhelical segments. What property does this confer upon basement membranes?

• A)strength
• B)flexibility
• C)extensibility
• D)transparency
• E)opacity

Identify and describe the unique and common characteristics of cnidarians.

Understand the structure and function of the gastrovascular cavity across different animal taxa.

Recognize the defensive mechanisms of cnidarians, specifically nematocysts.

Identify relationships among protists and their closest animal relatives.

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