Q. No.In plants, which of the following microbody is involved in photorespiration?
(1) Peroxisome
(2) Sphaerosome
(3) Glyoxysome
(4) Ribosome
(1) Peroxisome
(2) Sphaerosome
(3) Glyoxysome
(4) Ribosome
Which of the following cellular organelles is/are bound by a single membrane?
Peroxisomes, lysosomes, mitochondria
(1) Only peroxisomes but not lysosomes and mitochondria
(2) Both peroxisomes and lysosomes but not mitochondria
(3) All of the three organelles
(4) None of the three organelles
Ribosomes attach to ER by its
(1) 50 S subunit
(2) 60 S subunit
(3) 40 S subunit
(4) 30 S subunit
All are membrane bounded cell organelles in a typical plant cell, except
(1) Mitochondria
(2) Lysosome
(3) Ribosome
(4) Chloroplast
Plasmodesmata connections help in
(1) Cytoplasmic streaming
(2) Mitotic division
(3) Movement of substances between the cells
(4) Osmosis only
A nuclear pore allows
(1) Unidirectional movement of DNA
(2) RNA movement only
(3) RNA and protein movement
(4) Protein movement only
Correct statement in relation to vacuoles is
| 1. | It is a triple membrane bound space found in cytoplasm containing sap |
| 2. | It can occupy 90% of cell volume in plants |
| 3. | Its membrane allows transport of materials along the concentration gradient only |
| 4. | Concentration of ions is significantly lesser in vacuole than cytoplasm |
Find out the incorrect statement
| 1. | Middle lamella is mainly made up of Ca-pectate |
| 2. | Cell wall is formed from inner side therefore secondary wall formed before primary wall |
| 3. | Middle lamella glues the different neighbouring cells together |
| 4. | Pits are present in secondary wall |
Vesicles from ER fuse with
(1) Maturing face of golgi body
(2) Forming face of golgi body
(3) Primary lysosome for intercellular digestion
(4) Plasma membrane to remove them out from cell
Fluidity of the cell membrane is measured
(1) On the amount of cholesterol and protein in membrane
(2) On the amount of carbohydrate in membrane
(3) On the lateral movement of proteins within the overall bilayer
(4) On the flip-flop movement of protein
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