Which structure forms the selectively permeable boundary of a human cell?
Correct answer: A. A phospholipid bilayer with embedded proteins
- A. A phospholipid bilayer with embedded proteins
- B. A cellulose wall with open pores
- C. A protein capsule without lipids
- D. A glycogen layer around the cytoplasm
Explanation
The plasma membrane is mainly a phospholipid bilayer containing proteins that regulate movement into and out of the cell. A cellulose cell wall is found in plants, not human cells, and the other options do not form the human cell boundary.
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About Cells and Tissues
Cells and tissues covers cell membranes, cytoplasm, organelles, cell division and the transport of substances into and out of cells. It also explains the four basic tissues, epithelial, connective, muscular and nervous, including their structure, functions and locations, with a distinction between tissue organization and organ structure.
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