Q. No.In which models of DNA replication In this model the two parental DNA strands are back together after replication has occurred?
1. Conservative model.
2. Semiconservative model.
3. Dispersive model.
4. Destructive model.
1. Conservative model.
2. Semiconservative model.
3. Dispersive model.
4. Destructive model.
If a bacterial cell were to contain 4 nucleoids per cell, the number of copies of the bacterial chromosome present in each cell will most likely be:
1. 1
2. 2
3. 3
4. 4
Lagging strand is replicated in a discontinuous manner in small Okazaki fragments because:
| 1. | DNA polymerase cannot synthesize large stretches of DNA. |
| 2. | DNA polymerase needs to be replaced every 1000-2000 nucleotide. |
| 3. | DNA polymerase requires a free 3' OH group to attach new nucleotides. |
| 4. | Only one DNA strand can be used as the template at a time |
The lagging strand and the leading strand during DNA replication are replicated differently because:
1. On the leading strand, DNA synthesis occurs 5' to 3' on the leading strand, while on the lagging strand it is 3' to 5'.
2. DNA polymerase is able to continuously add new nucleotides on the leading strand while it must keep 'starting over' on the lagging strand.
3. The lagging strand requires only a single primer while the leading strand requires many.
4. Helicase opens the leading strand at a faster rate than the lagging strand.
The origin of replication is a particular sequence in a genome at which replication is initiated. This region is AT-rich because:
| 1. | DnaA proteins bind to AT-rich sites. |
| 2. | DnaC proteins bind to AT-rich sites. |
| 3. | AT base pairs are more easily separated than GC base pairs. |
| 4. | AT base pairs contain more hydrogen bonds than GC base pairs. |
A cis acting factor that place very important role in eukaryotic transcription will be:
1. RNA polymerase II.
2. Transcription factors.
3. Enhancers.
4. Shine Dalgarno sequence
The biochemical evidence for the fact that genetic code is a triplet code and read in a contiguous manner is:
| 1. | Insertions or deletions caused significant defects in the protein structure. |
| 2. | The effect of single insertions could be remedied by single deletions nearby. |
| 3. | Two nearby insertions caused significant defects in protein structure. |
| 4. | Three insertions near each other often led to minor defects in protein structure. |
All the following statements regarding a nucleosome are incorrect except:
1. It contains a single large protein which is connected to DNA by smaller linker proteins.
2. It contains approximately 200 base pairs of DNA.
3. It includes histone and nonhistone proteins.
4. It is a 30 nm diameter structure.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The spliceosome is composed of :
1. RNA and DNA.
2. Protein and DNA.
3. RNA and protein.
4. Lipids and monosaccharides
What must be true for a transfer RNA molecule?
| 1. | It must have a base pair sequence identical to the codon in the mRNA. |
| 2. | It must be attached to a particular amino acid. |
| 3. | It must bind to the protein to determine the primary sequence. |
| 4. | It must be destroyed immediately after it brings an amino acid to the ribosome. |
© 2025 GoodEd Technologies Pvt. Ltd.