Minerals and Nutrients

Hemoglobin is a protein in red blood cells that carries oxygen throughout the body. It contains iron atoms, which bind to oxygen molecules and give blood its red color.

Carbon and nitrogen are fundamental constituent elements of organic molecules, amino acids, and proteins, which form the primary cellular building blocks of the human body. Water, proteins, lipids, and nucleic acids all rely heavily on carbon and nitrogen skeletons.

Catechol dioxygenase is an iron-containing enzyme.

Hydrogen is the correct answer as it is among the 16 essential plant nutrients that are obtained by plants through water. It is a non-mineral nutrient.

Sea-kelp is a type of seaweed that is naturally rich in iodine, which is essential for thyroid function.

Milk is a rich source of calcium, protein, and potassium, but it is notoriously poor in iron. Infants require iron supplementation if fed exclusively on milk for extended periods.

Essential micronutrients for plants include zinc, copper, and boron. Sodium is generally considered a beneficial element for some plants but is not classified as an essential micronutrient for all plants.

The total amount of zinc in the human body is typically estimated to be between 1.5 and 2.5 grams, making 1 to 2 grams the most accurate range provided among the options.

Vesicular-arbuscular mycorrhiza (VAM) are symbiotic fungi that significantly enhance the uptake of phosphorus by plant roots.

This is the correct option. It is a macronutrient.

Calcium is necessary for muscle contraction. 

Iodine is a critical trace element required for the synthesis of thyroid hormones, which regulate metabolism and growth.

The active site in carbonic anhydrase contains zinc.

Oxygen is the most abundant element in the human body by mass, primarily because the body is composed largely of water (H2O).