One nutrient class supplies about 9 calories per gram, cushions organs, and forms part of every cell membrane. Which class is it?

Cells use one nutrient class as their main quick fuel, and the liver and muscles store it as glycogen. Which class matches that role?

A nutrient class supplies about 4 calories per gram and is used to build enzymes, antibodies, and contractile fibers. Which class is it?

Which nutrient class consists of inorganic ions needed for bone hardness, fluid balance, and nerve impulses?

Organic micronutrients act in small amounts as helpers in metabolism and do not supply energy by themselves. What nutrient class is this?

Which nutrient is the major solvent in plasma and cytosol and helps move heat out of the body during sweating?

Adipose tissue stores triglycerides for long-term energy, insulation, and organ padding. What nutrient class is being stored?

The body uses one nutrient class to make collagen, membrane channels, actin, myosin, and clotting factors. Which class is it?

One mineral is built into the pigment that carries oxygen inside red blood cells. Low intake lowers how much of that pigment is made. Which mineral is it?

Which vitamin increases intestinal calcium absorption and helps mineralize the skeleton?

Thyroid hormone cannot be made normally without one trace mineral in the diet. Which mineral is required?

Which vitamin is needed for normal collagen synthesis, wound repair, and healthy gums?

A vitamin supports dim-light vision and helps maintain epithelial tissues. Which vitamin does this?

Which vitamin is required for the liver to make several normal blood-clotting factors?

Which mineral gives hydroxyapatite strength in bones and teeth and also helps muscle contraction and cell signaling?

The most abundant positive ion in extracellular fluid helps set osmotic balance and allows action potentials to start. Which mineral is it?

A diet with almost no vitamin C leads to swollen bleeding gums, loose teeth, and poor wound healing. Which condition has developed?

A child gets too little vitamin D, and the growing leg bones soften and bow under body weight. Which condition is this?

A low-iron diet reduces hemoglobin production, causing fatigue, pallor, and shortness of breath with exertion. Which condition results?

Long-term iodine shortage makes the thyroid enlarge as it tries to trap more iodine from the blood. What condition appears?

A lack of vitamin A reduces retinal pigment function, so a person has trouble seeing in dim light. Which condition is this?

A severe thiamine deficiency causes nerve problems, muscle weakness, and in some cases edema and heart failure. Which condition is it?

A severe niacin deficiency causes dermatitis, diarrhea, and dementia. Which condition has developed?

Over many years, too little calcium and vitamin D can leave adult bones porous and easy to fracture. Which condition can result?

One vitamin dissolves in water, is not stored much by the body, and helps the intestine absorb iron from plant foods. Which vitamin fits?

A group of vitamins dissolves in water, supports energy metabolism, and is mostly lost in urine when intake exceeds immediate need. Which group is it?

A vitamin dissolves with dietary lipids, can be stored in the liver, and is made in the body from beta-carotene in foods like carrots. Which vitamin is it?

Which vitamin is fat-soluble, can be stored in body tissues, and is made in the skin when the skin is exposed to sunlight?

A fat-soluble vitamin stored in tissues helps protect cell membranes from oxidative damage. Which vitamin fits this description?

A vitamin dissolves in dietary lipids, can be stored in the liver, and is partly made by bacteria living in the large intestine. Which is it?