Cells & Body Systems

• Chemical (atoms & molecules) • Cell (smallest independent living unit) • Tissue (cell groups w/similar function and structure) • Organ (Specific Function, may contain several tissue types) • System (many organs/tissues contributing to survival needs)

Used for energy to drive chemical reactions of cells

Building molecules for cells

• Plasma Membrane • Cytoplasm (cytosol & organelles) • Nucleus • Mitochondria • Ribosomes • Endoplasmic Reticulum (smooth/rough) • Golgi Apparatus • Lysosomes • Microfilaments & microtubules

A lipid and protein layer that contains the parts of a cell, is semi-permeable and regulates the movement of materials in and out of the cell. Small molecules can pass but large ones cannot.

Found inside the plasma membrane and cytosol. Structures with specific functions.

Largest organelle. Contains chromosomes (DNA & genes). Give organelles instructions of how to build the cell.

Sausage shaped structures responsible for power to the cell and extracts energy from glucose and give off CO2.

Small granular structures responsible for protein synthesis.

Interconnected membraneous canals. Rough - studded with ribosomes for protein synthesis Smooth - lipid & steroid hormone synthesis, drug detoxification

Membranous sacs. Processing & packaging of proteins.

Vesicles containing enzymes, break down food and unwanted materials

Support and maintain cell shape

Aid in movement of cell and organelles

Movement of cells from high to low concentrations.

Movement of water down a concentration gradient across a semi-permeable membrane.

• Integumentary System (skin) • Cardiovascular System • Lymphatic System • Respiratory System • Skeletal System • Muscular System • Nervous System • Endocrine System • Digestive System • Urinary Sytem • Immune Sytem • Reproductive System

Skin. Protects the body and prevents water loss.

Transports nutrients, oxygen, and wastes.

Helps circulate body fluids and fights infection.

Supplies oxygen and removes carbon dioxide.

Provides body support, protection and movement.

Allows movement and helps produce heat.

Regulates body functions and allows self-awareness.