Covalent network solids are held together by covalent bonds, forming a continuous network throughout the solid.

Metallic solids are held together by metallic bonds, which involve a 'sea' of delocalized electrons around positively charged metal ions.

Metallic solids are held together by metallic bonds, which involve a 'sea of electrons' that are free to move.

A diode primarily functions to rectify current, allowing it to flow in one direction only.

A transformer is used to increase or decrease the voltage in an AC circuit while keeping the power constant.

Antibiotics are primarily used to treat bacterial infections by inhibiting the growth of bacteria.

Antioxidants prevent oxidation, which can lead to spoilage and degradation of food quality.

Antioxidants prevent oxidation by neutralizing free radicals, thus protecting cells from damage.

Antioxidants prevent oxidation, which can lead to cellular damage and contribute to various diseases.

Auxins primarily stimulate root growth and are involved in various growth processes.

The primary function of blood as a connective tissue is transport.

Cholesterol is essential for the production of hormones, including steroid hormones and vitamin D.

Ciliated epithelial cells are specialized for the movement of substances across their surface, such as mucus in the respiratory tract.

Cytokinins primarily stimulate cell division and are involved in various growth processes.

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

Glucagon is a hormone that raises blood glucose levels by promoting the conversion of glycogen to glucose in the liver.

Hemoglobin is a protein in red blood cells that binds to oxygen in the lungs and carries it to tissues throughout the body.

Hemoglobin's primary function is to carry oxygen from the lungs to the tissues and return carbon dioxide from the tissues to the lungs.

Hemoglobin's primary function is to transport oxygen from the lungs to the tissues.

Leaves are primarily responsible for photosynthesis, converting sunlight into energy for the plant.

Ligaments connect bone to bone, providing stability to joints.

Lipids primarily serve as energy storage molecules.

Nervous tissue is responsible for the transmission of electrical impulses throughout the body, facilitating communication.

Nucleic acids, such as DNA and RNA, are primarily responsible for storing and transmitting genetic information.

Parathyroid hormone (PTH) increases calcium levels in the blood by stimulating the release of calcium from bones and increasing calcium absorption in the intestines.

Petals are often brightly colored to attract pollinators.

The primary function of petals is to attract pollinators with their color and fragrance.

Plasma is the liquid component of blood that carries nutrients, hormones, and waste products throughout the body.

Potassium plays a crucial role in regulating water balance and osmotic pressure in plant cells.

Producers, such as plants, produce energy through photosynthesis, forming the base of the food chain.