Biomolecules and Their Functions

The video explores the elemental and chemical composition of living organisms, focusing on organic and inorganic compounds. It covers the analysis of biomolecules, including amino acids, proteins, polysaccharides, and nucleic acids. The video also discusses the structure and function of these biomolecules, highlighting their roles in metabolism and cellular processes.

What technique is used to determine the elemental composition of living tissues?

• Spectroscopy

• Chromatography

• Elemental analysis

• Centrifugation

Which of the following is a primary metabolite?

• Carbon

• Rubber

• Alkaloids

• Flavonoids

Which of the following is a secondary metabolite?

• Essential oils

• Sulfur

• Nitrogen

• Sodium

What is the unique property of amino acids that allows them to act as both acids and bases?

• Variable R group

• Presence of an amino group

• Presence of a carboxy group

• Ionizable nature of NH2 and COOH groups

What is the function of phospholipids in living organisms?

• Catalysis

• Cell membrane structure

• Genetic information

• Energy storage

Which type of biomolecule is involved in heredity?

• Lipids

• Nucleic acids

• Proteins

• Carbohydrates

What is the role of rubisco in the biosphere?

• Acts as a hormone

• Catalyzes carbon fixation

• Transports glucose

• Fights infections

What is the primary structure of a protein?

• The three-dimensional shape of the protein

• The sequence of amino acids

• The arrangement of multiple protein subunits

• The folding of the protein into alpha helices

Which bond is crucial for the structure of DNA?

• Phosphodiester bond

• Hydrogen bond

• Peptide bond

• Glycosidic bond

Which protein structure level is disrupted when a protein is denatured?

• Tertiary

• Secondary

• Primary

• Quaternary