Chapter 8 STD XI

1. Select the correct matching in the following pairs :
 a) rough ER - synthesis of glycogen 
b) rough ER - oxidation of fatty acid
c) smooth ER - oxidation of phospholipids
d) smooth ER - synthesis of lipids
2. Which of the following statements regarding mitochondria is incorrect ?
a) mitochondrial matrix contains single circular DNA molecule and ribosomes 
b) outer membrane is permeable to monomers of carbohydrates , fats and proteins
c) enzymes of electron transport are embedded in outer membrane 
d) inner membrane is convoluted with infoldings.
3. Which of the following events does not occur in rough endoplasmic reticulum ?
a) protein folding 
b) protein glycosylation
c) cleavage of single peptide 
d) phospholipid synthesis
4. Microtubules are absent in
a) mitochondria
b) flagella 
c) spindle fibres
 d) centrioles
5. Cellular organelles with membranes are
 a) ER , ribosomes and nuclei 
 b) lysosomes , G A and mitochondria
 c) nuclei , ribosomes and mitochondria
 d) chromosomes , ribosomes and ER
6. Lysosomes are rich in
 a) nucleic acids 
 b) hydrolytic enzymes 
 c) carbohydrates 
 d) hormones
7. Cell recognition and adhestlion occur due to biochemicals of cell membranes named
 a) proteins
 b) lipids 
 c) proteins and lipids
 d) glycoproteins and glycolypids
8. Which of the following organelle has single membrane?
a) mitochondria 
b) spherosomes 
c) nucleus
d) cell wall
9. Which of the following is not considered as part of the endo membrane system ?
 a) Golgi complex
 b) peroxisome 
 c) vacuole 
 d) lysosome
10. According to fluid mosaic model plasma membrane is composed of
 a) phospholipids and oligosaccharides
 b) phospholipids and hemissellulose 
 c) phospholipids and integral proteins 
 d) phosphelipids , extrinsic proteins and intrinsic proteins


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