Q. Consider the following statements and choose the correct options I. The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles II. ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen III. Ribosomes are involved in protein synthesis IV. Mitochondria helps in oxidative phosphorylation and generation of ATP
A) II, III and IV
B) Only I
C) Only II
D) Only III
Explanation
Rough Endoplasmic Reticulum (RER), the ER bearing ribosomes on their surface, is actively involved in protein synthesis, secretion and transport of substance. Smooth Endoplasmic Reticulum (SER), the ER devoid of ribosomes is the major site for synthesis of lipid In animal cells, lipid like steroidal hormones are synthesised in SER. Ribosomes are the site of protein synthesis. Mitochondria are the sites of aerobic respiration They produce cellular energy in the from of ATP hence, they are called ‘power house of the cell’. Oxidative phosphorylation occurs on the inner membrane of mitochondria
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.