Organic Molecules Quiz

Biomolecules and Reactions

• Inorganic molecules are not normally found in living things.
• Endergonic reactions require an input of energy.
• Exergonic reactions release energy.

Carbohydrate Tests

• Benedict's reagent turns blue-green when monosaccharides are present.
• The purpose of Sudan IV in the Sudan IV test for lipids is to stain lipids.

Protein Structure and Function

• Monomers of proteins are called amino acids.
• Amino acids are held together in proteins by peptide bonds.
• The Biuret reagent turns purple after reacting with peptide bonds.
• There are 20 different amino acids found in living things.

Cell Biology

• The purpose of the Dische Diphenylamine Test is to detect the presence of DNA.
• Escherichia coli belongs to the domain Bacteria.
• The main function of the pseudopodia in Amoeba is to capture food and move around.
• Eudorina belongs to the kingdom Protista.
• The function of the flagellum in Eudorina is to move around.
• Elodea belongs to the domain Eukarya.
• The main function of the central vacuole in Elodea is to store water and maintain turgor pressure.
• Solanum sp. (Potato) belongs to the kingdom Plantae.
• The main function of amyloplasts in Solanum sp. (Potato) cells is to store starch.
• Cell walls and cell membranes were visible in the Onion peel cells under the microscope.
• Saccharomyces sp. (Yeast) belongs to the kingdom Fungi.

Enzymes

• Enzymes are highly specific to their substrates.
• The primary structure of a protein is its sequence of amino acids.
• Hydrogen bonds in proteins are weak and contribute to the protein's 3D structure.
• The active site of an enzyme is the region where the substrate binds.
• During induced fit, the enzyme's active site changes shape to fit the substrate.
• Only small amounts of enzymes are needed in reactions because they are highly efficient.
• The reaction rate of an enzyme is affected by factors such as temperature, pH, and substrate concentration.
• Enzyme activity decreases at temperatures lower than the optimum.
• Enzyme activity often increases at temperatures higher than the optimum, but can eventually denature the enzyme.
• Temperature affects enzyme activity by altering the protein's shape and active site.

Test your knowledge about organic molecules and their types with this informative quiz! Learn about proteins, lipids, carbohydrates, and nucleic acids, and understand the difference between organic and inorganic molecules. Explore the concept of dehydration synthesis and its role in forming strong covalent bonds. Challenge yourself and expand your understanding of the fascinating world of organic chemistry!