Biological molecules: proteins and nucleic acids
18 review questions with answers for Biological molecules: proteins and nucleic acids. Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
The small molecules, joined in long chains, that make up a protein?
- Nucleotide
- Monosaccharide
- Fatty acid
- Amino acidRight answer
What this set covers
Amino acids and nucleotides are the building blocks here: peptide bonds, polypeptides and primary structure, the biuret test, protein jobs such as collagen, insulin and antibodies, and the sugar, phosphate and base parts of DNA and RNA.
- Common mix-up
- Students often mix up DNA and RNA: DNA has deoxyribose and thymine and is double stranded in this set, while RNA has uracil in place of thymine and mRNA has one strand.
- Review tip
- Make a two-column table comparing DNA and RNA nucleotides, filling in sugar, bases and strand number from memory, then match each protein function to an example.
All 18 questions and answers
The small molecules, joined in long chains, that make up a protein?
Answer: Amino acid
Bond formed between two amino acids by condensation?
Answer: Peptide bond
Chain of many amino acids joined together?
Answer: Polypeptide
Number of different amino acids commonly used to build human proteins?
Answer: 20
Name for the sequence of amino acids in a polypeptide?
Answer: Primary structure
Chemical used to test a food sample for protein?
Answer: Biuret reagent
Colour of a positive biuret test?
Answer: Purple
Protein in red blood cells that carries oxygen?
Answer: Haemoglobin
Proteins made by white blood cells that bind to specific antigens?
Answer: Antibodies
Protein hormone that lowers blood glucose concentration?
Answer: Insulin
Fibrous protein that gives strength to tendons and ligaments?
Answer: Collagen
Proteins that act as biological catalysts?
Answer: Enzymes
Monomer of DNA and RNA?
Answer: Nucleotide
A nucleotide is made of a phosphate, a sugar and a…?
Answer: Base
Five-carbon sugar found in DNA?
Answer: Deoxyribose
Base found in RNA in place of thymine?
Answer: Uracil
Number of strands in an mRNA molecule?
Answer: One
The backbone of each DNA strand is made of alternating…?
Answer: Sugars and phosphates
Play it as a class game
Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options were written for that question.