In a transcription unit, with respect to structural genes, the promoter is located:
1. | Upstream and 5’ | 2. | Upstream and 3’ |
3. | Downstream and 5’ | 3. | Downstream and 3’ |
Which of the following codons has a dual role in the genetic code?
1. | AUG | 2. | GUG |
3. | CUG | 4. | UUG |
Frederick Griffith discovered:
1. | DNA is the genetic material |
2. | RNA can be the genetic material |
3. | Streptococcus has two strains |
4. | Bacterial transformation |
In Avery, Macleod, and McCarty's experiment, the transformation of bacteria was inhibited by:
1. | Proteases | 2. | RNase |
3. | DNAs | 4. | None of these |
Which of the following is a pyrimidine base found in DNA?
1. | Adenine | 2. | Guanine |
3. | Uracil | 4. | Cytosine |
Which of the following is also called soluble RNA?
1. | tRNA | 2. | rRNA |
3. | mRNA | 4. | siRNA |
A typical nucleosome unit consists of about:
1. | 60 base pairs | 2. | 140 base pairs |
3. | 200 base pairs | 4. | 400 base pairs |
At any instant, RNA is transcribed on which of the following strands of DNA?
1. | Coding strand | 2. | Template strand |
3. | Lagging strand | 4. | Leading strand |
To form a nucleoside, a nitrogenous base is linked to a pentose sugar:
1. | Through a P-Glycosidic linkage at carbon atom number 1 |
2. | Through a P-Glycosidic linkage at carbon atom number 5 |
3. | Through an N-Glycosidic linkage at carbon atom number 1 |
4. | Through an N-Glycosidic linkage at carbon atom number 5 |
Nucleosomes constitute the repeating subunits of a structure in the nucleus called:
1. | Nucleoid | 2. | Chromatid |
3. | Solenoid | 4. | Chromatin |