Q. No.In a eukaryotic cell, the two organelles that can transform energy are:
1. bound by a single membrane
2. parts of the endomembrane system
3. present only in the plant cells
4. semi-autonomous
1. bound by a single membrane
2. parts of the endomembrane system
3. present only in the plant cells
4. semi-autonomous
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Identify the incorrect statement regarding the fluid mosaic model of the cell membrane:
| 1. | Proteins are classified as peripheral or integral depending on the ease of extraction |
| 2. | The lipid component of the membrane mainly consists of phosphoglycerides |
| 3. | Polar heads of the lipid molecules are towards the inner side and the non-polar tails towards the outer side |
| 4. | Quasi-fluid nature of lipids enable lateral movement of proteins within the overall bilayer |
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In the ultrastructure of cilia/ flagella, the radial spokes connect one of the tubules of each peripheral doublet to:
1. the bridge of the central microtubules
2. another tubule to the doublet
3. the central sheath
4. dynein arms
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Extranuclear chromosomes occur in:
| 1. | Peroxisome and ribosome | 2. | Chloroplast and mitochondria |
| 3. | Mitochondria and ribosome | 4. | Chloroplast and lysosome |
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Match List - I with List - II
| List -I | List -II | ||
| (a) | Cristae | (i) | Primary constriction in chromosome |
| (b) | Thylakoids | (ii) | Disc-shaped sacs in Golgi apparatus |
| (c) | Centromere | (iii) | Infoldings in mitochondria |
| (d) | Cisternae | (iv) | Flattened membranous sacs in stroma of plastids |
Choose the correct answer from the options given below.
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (iv) | (iii) | (ii) | (i) |
| 4. | (i) | (iv) | (iii) | (ii) |
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Which of the following is an incorrect statement?
1. The perinuclear space forms a barrier between the materials present inside the nucleus and that of the cytoplasm.
2. Nuclear pores act as passages for proteins and RNA molecules in both directions between nucleus and cytoplasm.
3. Mature sieve tube elements possess a conspicuous nucleus and usual cytoplasmic organelles.
4. Microbodies are present both in plant and animal cells.
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The organelles that are included in the endomembrane system are:
1. Golgi complex, Mitochondria, Ribosomes and Lysosomes
2. Golgi complex, Endoplasmic reticulus, Mitochondria and Lysosomes
3. Endoplasmic reticulum, Mitochondria, Ribosomes and Lysosomes
4. Endoplasmic reticulum, Golgi complex, Lysosomes and Vacuoles
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Match the following columns and select the correct option :
| Column - I | Column - II | ||
| (a) | Smooth endoplasmic reticulum | (i) | Protein synthesis |
| (b) | Rough endoplasmic reticulum | (ii) | Lipid synthesis |
| (c) | Golgi complex | (iii) | Glycosylation |
| (d) | Centriole | (iv) | Spindle formation |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iii) | (iv) |
| 2. | (iii) | (i) | (ii) | (iv) |
| 3. | (iv) | (ii) | (i) | (iii) |
| 4. | (i) | (ii) | (iii) | (iv) |
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The biosynthesis of ribosomal RNA occurs in:
| 1. | Ribosomes | 2. | Golgi apparatus |
| 3. | Microbodies | 4. | Nucleolus |
Which of the following statement about inclusion bodies IS incorrect ?
1. These are involved in ingestion of food particles.
2. They lie free in the cytoplasm.
3. These represent reserve material in cytoplasm.
4. They are not bound by any membrane.
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