State of Matter

Which of the following states of matter has particles that are tightly packed and maintain a fixed shape?

Solids

Which state of matter is responsible for transporting nutrients, waste products, and signaling molecules in the human body?

Liquids

Which of the following states of matter has particles that are tightly packed and maintain a fixed shape?

Solids

Which state of matter is responsible for transporting nutrients, waste products, and signaling molecules in the human body?

Liquids

Which state of matter has particles that are widely spaced and move freely and is essential for cellular respiration?

Gases

List the four major elements that make up 96% of the human body?

Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N)

List the elements that form the backbone of organic molecules such as carbohydrates, proteins, lipids, and nucleic acids?

Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N)

List the minor elements that are important for bone formation, nerve signaling, and maintaining fluid balance?

Calcium (Ca), Phosphorus (P), Potassium (K), Sulfur (S), Sodium (Na), Chlorine (Cl)

List the trace elements required in small amounts but critical for functions like oxygen transport, thyroid hormone production, and enzymatic activity?

Iron (Fe), Iodine (I), Zinc (Zn)

What is hemoglobin?

Oxygen transport

Which carbohydrate is the main source of energy for cellular processes?

Glucose

Which of the following is the primary function of carbohydrates?

Provide energy through glucose metabolism.

List the functions of proteins?

Structural support, enzyme activity, tissue repair.

Which type of protein speeds up chemical reactions?

Enzymes

Which protein is responsible for oxygen transport in the blood?

Hemoglobin

Amino acids are the building blocks of?

Proteins

List the following functions of lipids?

Storage energy, signaling cells, forms cell membranes.

What is the primary function of nucleic acids?

DNA and RNA store and transmit genetic information.

Which nucleic acid carries the genetic instructions for making proteins?

DNA

What sugar is found in DNA?

Deoxyribose

Which base is found in RNA but not in DNA?

Uracil

Which nucleic acid is single-stranded and involved in protein synthesis?

RNA