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 amine reacts with Hinsberg's reagent to produce an alkali insoluble product?
1. | 2. | ||
3. | 4. |
Which structure(s) of proteins remains(s) intact during denaturation process?
1. Both secondary and tertiary structures
2. Primary structure only
3. Secondary structure only
4. Tertiary structure only
The polymer that is used as a substitute for wool in making commercial fibres is -
1. Melamine
2. Nylon-6, 6
3. Polyacrylonitrile
4. Buna-N
The artificial sweetener stable at cooking temperature that does not provide calories is-
1. Saccharin
2. Aspartame
3. Sucralose
4. Alitame
The liquefied gas that is used in dry cleaning along with a suitable detergent is-
1. Water gas
2. Petroleum gas
3. NO2
4. CO2
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
After meiosis I, the resultant daughter cells have
1. | same amount of DNA as in the parent cell in S |
2. | twice the amount of DNA in comparison to haploid |
3. | same amount of DNA in comparison to haploid gamete |
4. | four times the amount of DNA in comparison to haploid gamete |
Which of the following organic compounds is the main constituent of Lecithin?
1. Arachidonic acid
2. Phospholipid
3. Cholesterol
4. Phosphoprotein