DNA and Protein Synthesis

What type of bond binds amino acids in a polypeptide chain?

• hydrogen bonds

• peptide bonds

• ribosomes

• covalent bonds

During transcription, which DNA nitrogenous base is transcribed to uracil in the complementary RNA strand

• Adenine

• Cytosine

• Guanine

• Thymine

Select the correct statement. 'Hint: Read carefully'

• mRNA is the final product of translation

• pre-mRNA is transcribed first and converted to mRNA after RNA splicing

• Polypeptide synthesis begins with translation, followed by transcription

• The anticodons on the mRNA attach to the codons on the tRNA

Define the terms 'gene' and 'allele' correctly

• A gene is a combination of chromosomes and alleles are regions of a DNA

• A gene is a portion of an allele and alleles are different forms of a gene.

• A gene is a portion of DNA and alleles are different forms of the same gene

• A gene is a combination of chromosomes and alleles are different forms of the same gene

Gene regulation is important in modifying for transcription. Methylation is a process that represses transcription by binding DNA tightly. Acetylation is a process to activate transcription. When would methylation be most useful?

• Increasing activation of cancer cells

• Turning off gene expression of cancer cells

• Increasing the activation of tumour suppressor genes

• Turning off gene expression of tumour suppressor genes

Draw a basic primary protein structure with labelling