Question

question 1 of 20 : select the best answer for the question. 1. a prokaryotic cell is under the microscope, and a scientist is examining the proteins that help molecules and ions enter and exit the cell. what part of the prokaryotic cell is being studied under the microscope? a. cell wall b. cytoplastic membrane c. plasma membrane d. dna mark for review (will be highlighted on the review page)

Explanation:

To solve this, we analyze each option:

• Option A: The cell wall provides structure and protection but is not involved in molecule/ion transport.
• Option B: "Cytoplastic membrane" is not the correct term for the structure involved in transport.
• Option C: The plasma membrane (also called cell membrane) contains proteins (like channel and carrier proteins) that facilitate the entry and exit of molecules and ions.
• Option D: DNA is the genetic material and not involved in transport.

Answer:

C. Plasma membrane