a. Small, circular non-histone DNA also present in mitochondria and chloroplast. b. The extension of plasma membranes mesosomes into the cell can be present in the form of tubules, lamellae and vesicles. c. The quasi fluid nature of lipid enables flip flop movement of proteins at a specific place. d. Components of the endomembrane system associated with secretion, packaging of material and capable of digestion of several macro organic compounds. e. Palade particles forming a peptide bond between amino acids is a membrane-bounded organelle. From given statements identify the incorrect ones.

Question

a. Small, circular non-histone DNA also present in mitochondria and chloroplast. b. The extension of plasma membranes mesosomes into the cell can be present in the form of tubules, lamellae and vesicles. c. The quasi fluid nature of lipid enables flip flop movement of proteins at a specific place. d. Components of the endomembrane system associated with secretion, packaging of material and capable of digestion of several macro organic compounds. e. Palade particles forming a peptide bond between amino acids is a membrane-bounded organelle. From given statements identify the incorrect ones., a a n d c, b a n d d, b , c , d a n d e, c a n d e

MARKS App · Accepted Answer

The Palade particles that form a peptide bond between amino acids are Ribosomes and are non-membranous organelle. Mitochondria and plastid are semi-autonomous organelles as they have circular DNA molecules similar to bacteria and partially depend on the nucleus. Mesosomes are specialized membraneous structures formed by an extension of the plasma membrane into the cell in the form of vesicles, tubules, and lamellae. Fluid mosaic model is proposed by Singer and Nicolson in 1972, and according to it, the lipids in membrane show the quasi-fluid nature that enables the lateral movement of proteins.

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