3 Which polysaccharide is a major component of plant cell walls? A Starch B Glycogen C Cellulose D Chitin
4 Which of the following is a function of lipids? A Enzyme catalysis B Genetic information storage C Long-term energy storage D Oxygen transport
5 Which part of an amino acid is unique to each amino acid? A Amino group B Carboxyl group C Hydrogen atom D R-group
8 Which of the following is a structural polysaccharide found in the exoskeleton of insects? A Starch B Glycogen C Cellulose D Chitin
9 Which type of biomolecule is the main component of cell membranes? A Carbohydrates B Proteins C Lipids D Nucleic acids
10 Which of the following is NOT a function of lipids? A Long-term energy storage B Thermal insulation C Catalyzing chemical reactions D Forming cell membrane structure
11 Which biomolecule is the main long-term energy storage in animals? A Glycogen B Cellulose C Chitin D Starch
13 Which type of RNA carries amino acids to the ribosome during protein synthesis? A mRNA B tRNA C rRNA D snRNA
14 Lipids are made up of which two building blocks? A Amino acids and glycerol B Glycerol and fatty acids C Monosaccharides and fatty acids D Nucleotides and glycerol
17 Which scientist(s) proposed the double-helix model of DNA? A Gregor Mendel B Watson and Crick C Charles Darwin D Louis Pasteur
18 The double-helix model of DNA was proposed by: A Watson and Crick B Chargaff C Meselson and Stahl D Hershey and Chase
19 Which process uses information from mRNA to build a protein? A Replication B Transcription C Translation D Mutation
20 What is the building block of nucleic acids? A Amino acid B Nucleotide C Monosaccharide D Fatty acid
22 Which of the following is the general formula for carbohydrates? A CnH2nOn B Cn(H2O)n C CnH2nO2 D CnH2n+2O
23 A scientist is studying a molecule that is a polymer of amino acids. What type of biomolecule is it? A Carbohydrate B Lipid C Protein D Nucleic acid
24 Which of the following is a saturated fatty acid? A Oleic acid B Linoleic acid C Stearic acid D Linolenic acid
25 What is the process of copying DNA into mRNA called? A Translation B Replication C Transcription D Mutation