Scientific Inquiry and Cells
The Body and Levels
Body Systems
Body System 2
Cell Theory
100

This organism is made of only one cell

What is a Unicellular organism?

100

Levels that become increasingly complex, from cells at the most basic level, to tissues, organs, organ systems, and the whole organism itself.

What is the Hierarchical Organization of Multicellular Organisms?

100

The organs that take in food and liquids and break them down into substances that the body can use for energy, growth, and tissue repair is what.

What is the Digestive System?

100

Your body's central framework. It consists of bones and connective tissue, including cartilage, tendons, and ligaments.

What is the Skeletal System?

100

A state of balance among all the body systems needed for the body to survive and function correctly.

Homeostasis

200

an organism composed of many cells, which are to varying degrees integrated and independent.

Multicellular

200

This level is the basic functional and structural unit of life.

What is the cell level?

200

This system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Organs of this system are attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction.

What is the Muscular System?

200

This system includes the nose, mouth, throat, voice box, windpipe, and lungs. Air enters the respiratory system through the nose or the mouth. If it goes in the nostrils (also called nares), the air is warmed and humidified.

Respiratory System

200

the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane (one that blocks the passage of dissolved substances—i.e., solutes)

Osmosis

300

It is something that depends on other factors.

Dependent Variable (DV) (Effect)

300

This level is the collection of different tissues that perform different functions.

What is the organ level?

300

This is a vital biological system that removes excess and waste products from the body to maintain homeostasis


What is the Excretory System?

300

Includes the brain, spinal cord, and a complex network of nerves. This system sends messages back and forth between the brain and the body


Nervous System

300

a membrane that only allows movement of solvent molecules but restricts movement of solute particles across the membrane.

Semipermeable Membrane

400

It is a variable that stands alone and isn't changed by the other variables you are trying to measure.

Independent Variable (IV) (Cause)

400

This level includes the collection of cells that are similar in structure and perform similar function.

What is the tissue level?

400

This system contains tissues and organs that produce, store, and carry white blood cells that fight infections and other diseases.


What is the Lymphatic System?

400

The glands and organs that make hormones and release them directly into the blood so they can travel to tissues and organs all over the body

What is the Endocrine System?

400

the physiological processes that maintains a fixed concentration of cell membrane-impermeable molecules and ions in the fluid that surrounds cells

Osmoregulation

500

Steps of Scientific Inquiry

What is Make an observation, Form a hypothesis, Collect data, Research the work of previous scientists, Design an experiment, Communicate the results and Analyze data?

500

This is the non-living parts of a cell that interacts to form a cell.

What are organelles?

500

The system that contains the heart and the blood vessels and moves blood throughout the body. This system helps tissues get enough oxygen and nutrients, and it helps them get rid of waste products.

What is the Circulatory System?

500

This system includes your body's outer layer.

What is the Integumentary System?

500

a mechanism by which mammals maintain body temperature with tightly controlled self-regulation independent of external temperatures.

Thermoregulation

M
e
n
u