Font size
Worksheets[TKSS24] DP3A-Nutrients] Proteins
Total questions: 15
Worksheet time: 8mins
Identify the element found in protein but not present in a carbohydrate.
What is the repeating unit that makes up proteins?
amino acids
glucose
fatty acid
peptides
What is the NH2 group on this amino acid called?
Name the bond that is formed between two amino acids.
(a)
What is the name of the polymer produced from joining many amino acids?
What is the role of protein in the body?
Is the main source of energy for the body
Helps to build and repair body tissue
Provide warmth and cushioning to the body's organs
Helps to transport vitamins through the body
All of the above are roles of protein in the body
What kind of protein speeds up chemical reactions?
haemoglobin
hormone
Which shows the chemical formula of a protein?
Benedict's reagent
Biuret reagent
Name another chemical bond that is commonly found in proteins, besides peptide bonds.
(a)
A protein is always made up of one single polypeptide strand.
True
False
What is the observation when Biuret solution is added to a sample containing amino acids only?
(a)
The darker the purple colour of the Biuret solution, the more protein is present.
Is this statement true or false?
True
False
Some amino acids are classified as essential because our bodies cannot produce them. We can only obtain the amino acids from diet.
Is this statement true or false?
True
False
Which other element can be found in some amino acids?
sodium
neon
sulfur
tin
