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.

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?

The first formed primary structure of a protein molecule represents:
1. Folding of protein due to hydrophobic interactions.
2. Local folding which is stabilized by hydrogen bonds.
3. The sequence of amino acids in the polypeptide.
4. Interactions between two or more polypeptides.

All statements regarding the genetic code is universal except:
1. Most amino acids are specified by more than one codon.
2. Many codons have more than one function.
3. Some organisms use codons differently than other organisms.
4. In some cases, the third base of a codon is nonessential.

Identify the correct statements regarding the structural genes that are part of an operon:

All the following are required for accurate transcription except:
1. Regulatory information within the DNA.
2. Proteins which bind to the DNA.
3. Proteins that copy the information from the DNA.
4. Ori.

Select the correct ascending order of the levels of packaging of DNA?
1. Nucleosomes, 30 nm fibers, radial loop domains.
2. 30 nm fibers, nucleosomes, radial loop domains.
3. Nucleosomes, radial loop domains, 30 nm fibers.
4. Radial loop domains, nucleosomes, 30 nm fibers.

Eukaryotic ribosomes [apart from those present in mitochondria and chloroplast] are different from prokaryotic ribosomes. The essential difference will be:

The enzyme aminoacyl-tRNAsynthetase is able to recognize all the following in the tRNA molecule except:
1. The acceptor stem.
2. Bases in the stem loop regions.
3. The anticodon region.
4. 5’ end.