Higher Biology Unit 1. Key Area 3: Gene Expression

What is gene expression?

• The replication of DNA

• The removal of introns from mRNA

• The process of using information from a gene to synthesize a protein

• The mutation of a gene

What is the role of mRNA in protein synthesis?

• Creates peptide bonds between amino acids

• Carries amino acids to the ribosome

• Forms the structure of the ribosome

• Copies genetic code from DNA to the ribosome

What is the first stage of gene expression?

• Replication

• Transcription

• Translation

• Mutation

What sugar is found in RNA?

• Deoxyribose

• Fructose

• Ribose

• Glucose

Which base does adenine pair with in RNA?

• Thymine

• Cytosine

• Guanine

• Uracil

What are the three types of RNA mentioned?

• dRNA, eRNA, fRNA

• aRNA, bRNA, cRNA

• mRNA, hrRNA, crRNA

• mRNA, tRNA, rRNA

What does a codon code for?

• A specific amino acid

• A specific nucleotide

• A specific lipid

• A specific carbohydrate

What is the role of tRNA in translation?

• It carries specific amino acids to the ribosome

• It synthesizes new strands of mRNA

• It replicates DNA

• It forms peptide bonds between amino acids

What bonds are formed between amino acids to create a protein?

• Hydrogen bonds

• Ionic bonds

• Peptide bonds

• Covalent bonds

What determines the shape and function of a protein?

• The type of sugar in its structure

• The sequence of amino acids and how they fold

• The sequence of nucleotides in DNA

• The number of introns spliced out