WorksheetsA Level Biology: Lipids
Total questions: 10
Worksheet time: 5mins
What are lipids?
Macromolecules that contain carbon, hydrogen, and oxygen atoms
Macromolecules that contain nitrogen, hydrogen, and oxygen atoms
Macromolecules that contain carbon, hydrogen, and nitrogen atoms
Macromolecules that contain carbon, nitrogen, and oxygen atoms
What is the main difference between lipids and carbohydrates?
Lipids contain a lower proportion of oxygen
Lipids contain a higher proportion of oxygen
Lipids contain a lower proportion of carbon
Lipids contain a higher proportion of carbon
Which of the following best describes the solubility of lipids in water?
Polar and hydrophilic (soluble in water)
Non-polar and hydrophobic (insoluble in water)
Polar and hydrophobic (insoluble in water)
Non-polar and hydrophilic (soluble in water)
What are the two groups of lipids that you need to know?
Triglycerides and phospholipids
Monosaccharides and disaccharides
Amino acids and proteins
Nucleotides and nucleic acids
What are the monomers of triglycerides?
Glycerol and fatty acids
Glucose and fructose
Amino acids and peptides
Nucleotides and nucleic acids
What is the chemical formula for a fatty acid?
RCOOH
HCOOH
CH3OH
CH3COOH
What is the main difference between saturated and unsaturated fatty acids?
Saturated fatty acids have double bonds, while unsaturated fatty acids do not
Saturated fatty acids have a higher number of carbon atoms than unsaturated fatty acids
Saturated fatty acids are solid at room temperature, while unsaturated fatty acids are liquid
Saturated fatty acids are found in animal fat, while unsaturated fatty acids are found in vegetable oils
What is the difference between cis-fatty acids and trans-fatty acids?
Cis-fatty acids are metabolized by enzymes, while trans-fatty acids are not
Cis-fatty acids have H atoms on the same side of the double bond, while trans-fatty acids have H atoms on opposite sides
Cis-fatty acids are found in animal fat, while trans-fatty acids are found in vegetable oils
Cis-fatty acids have a higher number of carbon atoms than trans-fatty acids
How is a triglyceride formed?
By esterification of glycerol and fatty acids
By condensation of glucose and fructose
By hydrolysis of amino acids and peptides
By polymerization of nucleotides and nucleic acids
How many water molecules are released when one triglyceride is formed?
One
Two
Three
Four
