Mature RBC contains :-a)Enzymes of TCA cycleb)Glycolytic enzymec)Enzymes of Kreb cycled)All of aboveCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Red blood cells plasma membrane contains the following enzymes: ATPases, anion transport protein, glyceraldehyde 3-phosphate dehydrogenase, protein kinases, adenylate cyclase, acetylcholinesterase.

► Among glycolytic enzymes, glyceraldehyde 3-phosphate dehydrogenase is present in red blood cells plasma membrane.
► Whereas no enzymes of the citric acid cycle also known as TCA cycle (tricarboxylic acid cycle) or Krebs cycle is present in RBCs.

Answer

In RBC , since anaerobic respiration takes TCA or krebs cycle doesn't takes place,thus it lacks its enzymes. Glycolysis is a common pathway for both aerobic as well as anaerobic respiration,so it would have glycolytic enzymes. so, op B.

Answer

Mature RBC contains Glycolytic enzymes.

Mature red blood cells (RBCs), also known as erythrocytes, are specialized cells that play a crucial role in transporting oxygen to various tissues and organs in the body. These cells lack a nucleus and most organelles, including mitochondria. As a result, they rely primarily on glycolysis, a process that occurs in the cytoplasm, to generate energy.

Glycolysis is a metabolic pathway that converts glucose into pyruvate, producing a small amount of ATP and NADH in the process. This process is essential for red blood cells as it provides the necessary energy for their functions, including the maintenance of their shape and the ability to squeeze through narrow capillaries.

Reasons for excluding other options:

- Enzymes of TCA cycle: The tricarboxylic acid (TCA) cycle, also known as the Krebs cycle or citric acid cycle, is a central metabolic pathway that takes place in the mitochondria. It involves a series of enzymatic reactions that oxidize acetyl-CoA, derived from the breakdown of glucose, fatty acids, or amino acids, to produce ATP, NADH, and FADH2. However, mature RBCs lack mitochondria, and therefore, they do not possess the enzymes required for the TCA cycle.

- Enzymes of Krebs cycle: The Krebs cycle, as mentioned above, is a part of cellular respiration that occurs in the mitochondria. Since mature RBCs lack mitochondria, they also lack the enzymes needed for this cycle.

Thus, the correct answer is option 'B' - Glycolytic enzymes.

Answer

Red blood cells plasma membrane contains following enzymes: ATPases, anion transport protein, glyceraldehyde 3-phosphate dehydrogenase, protein kinases, adenylate cyclase, acetylcholinesterase.
Thus among glycolytic enzymes, glyceraldehyde 3-phosphate dehydrogenase is present in red blood cells plasma membrane. Where as no enzymes of citric acid cycle also known as TCA cycle ( tricarboxylic acid cycle) or krebs cycle is present in RBCs.

Answer

Krebs cycle occurs in mitochondria and tca cycle occurs at inner membrane of mitochondria and u must know tha rbc lacks mitochondria but yes..it has cytoplasm and we all know that glycolysis ocurs in cytoplasm.

Top Courses for NEETView all

Biology Class 11

Daily Test for NEET Preparation

NEET Mock Test Series 2025

Topic-wise MCQ Tests for NEET

Physics Class 11

Top Courses for NEET

Top Courses for NEET

Suggested Free Tests

Related Content

About NEET

NEET Preparation Material

How to Prepare for NEET Exam?

NCERT Based Study Material

NEET Mock Tests

Other Popular Exams

Company