Q. No.Non-membranous nucleoplasmic structures in the nucleus, are the sites for active synthesis of:
1.
protein
2.
mRNA
3.
rRNA
4.
tRNA
Which of the following nucleic acids is present in an organism having 70 S ribosomes only?
1. Single-stranded DNA with a protein coat
2. Double-stranded circular naked DNA
3. Double-stranded DNA enclosed in nuclear membrane
4. Double-stranded circular DNA with histone proteins
Match column I with column II.
| Column I | Column II | ||
| (a) | Golgi apparatus | (i) | Synthesis of protein |
| (b) | Lysosomes | (ii) | Trap waste and excretory products |
| (c) | Vacuoles | (iii) | Formation of glycoproteins and glycolipids |
| (d) | Ribosomes | (iv) | Digesting biomolecules |
Choose the right match from the options given below:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (iv) | (iii) | (i) | (ii) |
| 3. | (iii) | (ii) | (iv) | (i) |
| 4. | (i) | (ii) | (iv) | (iii) |
Which of the following cell organelles is present in the highest number in secretory cells?
| 1. | Mitochondria | 2. | Golgi complex |
| 3. | Endoplasmic reticulum | 4. | Lysosomes |
Which of the following pair of organelles does not contain DNA?
1. Nuclear envelope and Mitochondria
2. Mitochondria and Lysosomes
3. Chloroplast and Vacuoles
4. Lysosomes and vacuoles
The shorter and longer arms of submetacentric chromosome are referred to as:
1. m-arm and n-arm respectively
2. s-arm and l-arm respectively
3. p-arm and q-arm respectively
4. q-arm and p-arm respectively
Which of the following statements regarding mitochondria is incorrect?
| 1. | Mitochondrial matrix contains single circular DNA molecule and ribosomes. |
| 2. | Outer membrane is permeable to monomers of carbohydrates, fats, and proteins. |
| 3. | Enzymes of electron transport are embedded in the outer membrane. |
| 4. | Inner membrane is convoluted with infoldings. |
The concept of "Omnis cellula-e-cellula" regarding cell division was first proposed by:
1. Aristotle
2. Rudolf Virchow
3. Theodor Schwann
4. Schleiden
Which one of the following statements about mycoplasma is wrong?
1. They are also called PPLO
2. They are pleomorphic
3. They are sensitive to penicillin
4. They cause disease in plants
1. proplastids
2. glyoxisomes
3. peroxisomes
4. mitochondria
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