The Basic Structure of the Human Body

What are the levels of biological organization in increasing complexity?

Chemical Level, Cellular Level, Tissue Level, Organ Level, Organ System Level, Organism.

What constitutes the Chemical Level of biological organization?

Atoms and molecules that form the building blocks of life.

What are the six elements represented by CHNOPS?

Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, Sulfur.

What is the function of carbohydrates in biological systems?

They serve as an energy source.

What role do proteins play in cells?

They function as cellular machinery and enzymes.

What are the functions of the nucleus?

It acts as the control center for the cell, storing genetic material (DNA) and managing cell functions.

How does the endoplasmic reticulum contribute to cellular function?

It serves as a manufacturing, processing, and transportation system within the cell.

What is the primary purpose of the Golgi apparatus?

To modify, sort, and package proteins and lipids for secretion or delivery to other organelles.

What is the main function of mitochondria?

They act as the powerhouse of the cell, generating energy.

What is the definition of an organ in biological terms?

Two or more tissue types working together to perform a specific function.

Name an essential function of the heart.

It pumps blood using muscle and nervous tissue.

What is the primary function of the lungs?

To facilitate gas exchange.

What are vital organs necessary for sustaining life?

Brain, Heart, Lungs, Kidneys, Liver.

What does the Integumentary System consist of?

Skin, hair, nails, and glands that protect the body and regulate temperature.

What is the role of the Skeletal System?

To provide structural support, protection, and movement.

What is the main function of the Muscular System?

To enable voluntary and involuntary movement, and generate body heat.

What does the Nervous System consist of?

Brain, spinal cord, and nerves; it processes information and coordinates responses.

What do the organs of the Urinary/Excretory System do?

Filter waste from the blood and manage fluid balance.

What tissues make up the respiratory system?

Nose, trachea, and lungs; they facilitate breathing and gas exchange.

What is the function of the digestive system?

To break down food and absorb nutrients.

What is the basic unit of life?

The cell.

What is protoplasm?

The entire living contents of a cell.