A. Membrane of human RBCs has approximately 52% protein.
B. The phospholipids are arranged in a bilayer.
C. Extensions of the plasma membrane into the cell form mesosomes.
D. Tails towards the inner part of lipids are hydrophobic and thus protected from aqueous medium.
E. Glycocalyx is present on the outer surface of the plasma membrane.
Choose the correct answer from the options given below :
Cell Membrane Statements Correctness
Let's evaluate each statement about the cell membrane in eukaryotic cells:
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A. Membrane of human RBCs has approximately 52% protein.
This is generally accepted. Human red blood cell membranes contain a high proportion of protein.
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B. The phospholipids are arranged in a bilayer.
This is correct. The plasma membrane's core structure is a phospholipid bilayer.
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C. Extensions of the plasma membrane into the cell form mesosomes.
This is incorrect. Mesosomes are characteristic infoldings in prokaryotic cells, not eukaryotic ones.
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D. Tails towards the inner part of lipids are hydrophobic and thus protected from aqueous medium.
This is correct. The hydrophobic lipid tails face inward, shielded from the aqueous environment.
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E. Glycocalyx is present on the outer surface of the plasma membrane.
This is considered incorrect in this context. While found on animal cells, glycocalyx is not a universal feature of all eukaryotic cells.
The statements identified as correct are A, B, and D.
Similar Questions
- Match List I with List II :
List I List II A. Trypsin I. Intercellular ground substance B. Morphine II. Lectin C. Concanavalin A III. Enzyme D. Collagen IV. Alkaloid
Choose the correct answer from the options given below : - Which of the following statements are correct regarding amino acids ?
A. They are substituted methanes.
B. Serine is an aromatic amino acid.
C. Valine is a neutral amino acid.
D. Lysine is an acidic amino acid.
Choose the correct answer from the options given below : - Identify the correct statements about biomolecules.
A. Lipids are generally water soluble.
B. Proteins are polypeptides.
C. Polysaccharides are long chains of sugars.
D. Adenine and guanine are substituted pyrimidines.
E. Almost all enzymes are proteins.
Choose the correct answer from the options given below : - Alpha-helix is found in which level of protein structure ?
Non-membrane bound cell organelles found in both prokaryotic and eukaryotic cells are : ____________________
- Match List I with List II :
List I (Phase of cell cycle) List II (Activity) A. $G_1$ phase I. Actual cell division occurs B. S phase II. Cell is metabolically active and continuously grows but does not replicate its DNA C. $G_2$ phase III. Synthesis of DNA occurs and the amount of DNA per cell doubles D. M phase IV. Proteins are synthesized while cell growth continues
Choose the correct answer from the options given below : - Choose the correct statements regarding cell organelles and their inclusions.
A. The endomembrane system includes Golgi complex, endoplasmic reticulum and mitochondria.
B. Rough endoplasmic reticulum bears ribosomes on its surface.
C. Both mitochondria and plastids have circular DNA.
D. A network of microtubules, microfilaments and intermediate filaments present in the cytoplasm is called cytoskeleton.
E. Mitochondrion is a single membrane-bound structure.
Choose the correct answer from the options given below : - The following reaction depicts the activity of a particular class of enzymes :
$$ \begin{array}{cc} \text{X} & \text{Y} \\ | & | \\ \text{C} - & \text{C} \end{array} \xrightarrow{E} \text{X} - \text{Y} + \text{C} = \text{C} $$
(Substrate) $\quad$ (Product) (Product)
Identify the enzyme class 'E' from the following options :
Important Questions from Structure and Function of Cell
- Match List I with List II :
List I List II A. Trypsin I. Intercellular ground substance B. Morphine II. Lectin C. Concanavalin A III. Enzyme D. Collagen IV. Alkaloid
Choose the correct answer from the options given below : - Which of the following statements are correct regarding amino acids ?
A. They are substituted methanes.
B. Serine is an aromatic amino acid.
C. Valine is a neutral amino acid.
D. Lysine is an acidic amino acid.
Choose the correct answer from the options given below : - Identify the correct statements about biomolecules.
A. Lipids are generally water soluble.
B. Proteins are polypeptides.
C. Polysaccharides are long chains of sugars.
D. Adenine and guanine are substituted pyrimidines.
E. Almost all enzymes are proteins.
Choose the correct answer from the options given below : - Alpha-helix is found in which level of protein structure ?
Non-membrane bound cell organelles found in both prokaryotic and eukaryotic cells are : ____________________
