The Major Different Between Class I Fusion Proteins and Class

question 21

Multiple Choice

The major different between class I fusion proteins and class II fusion proteins is that ….

• A) class I protein mediate fusion at the plasma membrane and class II protein mediate fusion with the endosome membranes.
• B) only class I proteins contain fusion peptides.
• C) only class II proteins have a transmembrane domain.
• D) only class I proteins undergo large conformation changes within the protein during entry.
• E) class I proteins are found in unenveloped virus particles while class II proteins are found in enveloped particles.

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Definitions:

Cork Parenchyma

One or more layers of parenchyma cells produced inwardly by the cork cambium.

Vascular Cambium

A layer of tissue in plants found between the xylem and the phloem in the stems and roots of vascular plants, responsible for secondary growth and the increase in stem girth.

Epidermis

The outermost layer of cells in plants and animals that serves as a protective barrier against environmental elements.

Prepared Childbirth

Developed by French obstetrician Ferdinand Lamaze, this childbirth strategy is similar to natural childbirth but includes a special breathing technique to control pushing in the final stages of labor and a more detailed anatomy and physiology course.