Cell Structure and It's Function | Practice MCQs for Mdcat | mosaicbro.com

Cell Structure and It's Function | Practice MCQs for Mdcat

7 of 54 questions (Page 2 of 8)

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8 Holding neighboring cells together is the function of:
Correct Answer: C
Explanation: The middle lamella acts as a glue to hold adjacent plant cells together.
9 All of following are common molecules in membrane of all type of cells except:
Correct Answer: C
Explanation: Cholesterol is absent in the membranes of prokaryotic cells and some eukaryotic organelles.
10 Hydrophobic portion of plasma membrane is present in/at:
Correct Answer: B
Explanation: The hydrophobic tails of phospholipids are oriented inward, forming the inner core of the membrane.
11 In plasma membrane, carbohydrates combine with the lipids and proteins to form glycolipids and glycoproteins and are oriented:
Correct Answer: C
Explanation: Carbohydrates on the plasma membrane face outward, playing roles in cell recognition and signaling.
12 Which of the following is not a characteristic feature of animal cell membrane?
Correct Answer: D
Explanation: Animal cells rely on the plasma membrane for shape and transport but require other mechanisms (e.g., ion pumps) to prevent osmotic lysis.
13 Which of the following acts as receptor site on plasma membrane?
Correct Answer: D
Explanation: Glycoproteins on the membrane surface serve as receptors for signaling molecules.
14 Which structure is most important for cellular life?
Correct Answer: B
Explanation: The cell membrane is essential for maintaining cellular integrity, transport, and communication.
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