BIOS 1404 Exam 6 - containingno more than amino acids. –Answer...

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BIOS 1404 Exam 6

• Transcription and translation of a gene composed of 30 nucleotides would form a protein

containingno more than amino acids.–Answer 10

• Protein synthesis begins with the formation of an initiation complex, com- posed of which of

the following –Answer initiator tRNA small ribosomal subunit mRNA

• Phosphorylation is an example of

–Answer post-translational processing

• For the trp operon, high levels of tryptophan will lead to the

–Answer binding of a repressor protein to the operator and a reduction in gene expression.

• Using the table above, determine the peptide sequence for the following sequence of mRNA

codons –Answer

'3- AUG-ACU-CCG-GUA-5'

–Answer Met-Ala-Ser-Val

• Protein synthesis requires hydrolysis of

–Answer GTP

• Translation can be directly affected by

–Answer activation of protein kinases 1 / 2

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• The double strands of DNA are held together by

–Answer hydrogen bonding

• Prokaryotic cells lack a nucleus. Therefore, the genes in prokaryotic cells can be

–Answer Transcribed and translated at the same time

• In E. coli (bacteria), under which condition would lactose catabolism be greatest?

–Answer high CAMP and high lactose

• Simultaneous transcription and translation can occur in

–Answer prokarytic cells

• In the Hershey-Chase experiments, viral nucleic acids were followed using radioactive

phosphorus, while viral proteins were monitored with radioactive sulfur. This was done because –Answer Nucleotides contain phosphate groups and protein shape is maintained by disulfide bridges.

• Guanine makes up 15% of the nucleotides in a sample of DNA from a type of yeast.

Approximately, what percentage of the nucleotides will be thymine?-

–Answer 35%

• The central dogma of molecular biology states that the flow of genetic information is

–Answer From DNA to mRNA to protein.

• To perform gel electrophoresis, a sample of DNA is placed to the positively charged

electrode. This is because DNA between two electrodes. DNA is attracted –Answer Is rich in phosphate groups.

• RNA contains which bases?

–Answer

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