IGCSE Biology Protein Synthesis and Mutations

Which of the following best describes a DNA molecule?

• double helix
• contains ribose
• made of amino acids
• contains Uracil

Tags

NGSS.HS-LS1-1

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids
• nucleotides
• fatty acids
• polysaccharides

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• cytosine
• guanine
• thymine
• uracil

The process to go from DNA to mRNA is _______

• translation
• transcription
• replication

The process to go from mRNA to a protein is called ____

• transcription
• rRNA
• replication
• translation

DNA is the template for

• amino acids

• tRNA

• mRNA

• sugars

Tags

NGSS.HS-LS1-1

What term describes when mRNA is read 3 consecutive letters (bases) at a time and it codes for a single amino acid?

• Codon

• Anticodon

• Polypeptide

• Gene

In proteins, the amino acid order is determined by 

• nitrogenous bases in RNA
• random placement
• nitrogenous bases in DNA
• there is no order

Tags

NGSS.HS-LS1-1

What is the three base sequence of mRNA that codes for a single amino acid?

• Anticodon
• Codon
• Protein

In RNA, Uracil pairs with ______. 

• cytosine
• adenine
• guanine
• thymine