Biomolecules and nutrition

How do carbohydrates function in the body?

• Carbohydrates are mainly stored as fat in the body.

• Carbohydrates are primarily used for muscle building.

• Carbohydrates provide energy, support metabolic processes, and are essential for brain function.

• Carbohydrates are not necessary for brain function.

What are the main types of carbohydrates?

• Starches, disaccharide, and acids

• Sugars, fiber, and minerals

• Proteins, fats, and starches

• Sugars, starches, and fiber.

What of the following isn't true in the role of proteins in biological systems?

• Proteins are essential for catalyzing reactions, providing structure, transporting molecules, regulating processes, and immune function.

• Proteins serve as a source of vitamins and minerals.

• Proteins are used for energy storage.

• Proteins are involved in DNA replication.

How are enzymes related to proteins?

• Enzymes are carbohydrates that provide energy to cells.

• Enzymes are lipids that store genetic information.

• Enzymes are a type of protein that act as catalysts in biochemical reactions.

• Enzymes are minerals that help in muscle contraction.

What is the primary structure of a protein?

• The three-dimensional shape of a protein.

• The arrangement of secondary structures in a protein.

• The total number of protein molecules in a cell.

• The unique sequence of amino acids in a protein.

Which describes the best the main functions of lipids in the body?

• Lipids aid in digestion and nutrient absorption and are main form of store energy

• Lipids act as signaling molecules and are main form of store energy

• Lipids primarily provide structural support to cells and act as signaling molecules.

• Lipids are molecules that store energy, form cell membranes, and act as signaling molecules.

How do saturated and unsaturated fats differ?

• Saturated fats are solid at room temperature and have no double bonds; unsaturated fats are liquid and contain one or more double bonds.

• Saturated fats have fewer calories than unsaturated fats and are always liquid at room temperature.

• Saturated fats are healthier than unsaturated fats and are found in fish; unsaturated fats are found in meat.

• Saturated fats are liquid at room temperature and contain double bonds; unsaturated fats are solid and have no double bonds.

What is the role of phospholipids in cell membranes?

• Phospholipids create a bilayer that forms the fundamental structure of cell membranes, allowing for selective permeability and fluidity.

• Phospholipids are responsible for energy production in cells.

• Phospholipids act as enzymes to speed up chemical reactions.

• Phospholipids are the primary source of genetic material in cells.

What is the primary function of nucleic acids?

• Nucleic acids form cell membranes and assist in protein synthesis (RNA).

• Nucleic acids provide energy to cells and assist in protein synthesis (RNA).

• Nucleic acids store energy and genetic information (DNA)

• Nucleic acids store genetic information (DNA) and assist in protein synthesis (RNA).

How do biomolecules contribute to the nutritional value of food?

• Biomolecules are primarily used for food preservation.

• Biomolecules are only responsible for the taste of food.

• Biomolecules have no impact on the nutritional value of food.

• Biomolecules contribute to the nutritional value of food by providing essential nutrients like energy, proteins for growth, and fats for hormone production.