| Term | Definition |
|---|---|
| Organisms | things that have all the characteristics of life |
| cell | smallest unit of life |
| unicellular | living things only made of only once cell |
| multicellular | living things that are made of two or more cells |
| Compound Microscope | a light microscope that uses more than one lens |
| Robert Hooke | created the microscope, named and observed cells |
| Cell theory | states that all living things are made from one or more cells, smallest unit of life and all new cells come from preexisting cells. |
| proteins | necessary for nearly everything that cells do |
| Lipids | also known as fats, are protective barriers in cells |
| Carbohydrates | store energy, provide structural support, are needed for communication between cells. |
| Cell membrane | protects the inside of a cell from the environment |
| Cell wall | stiff structure outside the cell membrane |
| Nucleus | directs all activities contains DNA |
| Chloroplasts | use light energy to make food called glucose in plants |
| Osmosis | diffusion of water molecules through a membrane |
| Diffusion | movement of substances from an area of higher concentration to an area of lower concentration. |
| Cellular respiration | process of converting energy in food molecules into a usable energy form called ATP (humans) |
| Photosynthesis | process in which plants make their own food and produce oxygen. |
| asexual reproduction | process in which organisms can reproduce offspring on their own |
| sexual reproduction | process where organisms work together to create offspring |
| heart | muscle/organ that aides in the transport of blood |
| Circulatory System | heart, veins and blood that transport nutrients and waste through the body |
| Digestive System | system of organs that breaks down food |
| Nervous System | brain, spinal cord and nerves that send messages to and from the brain. |
| Skeletal System | system of bones that provide the structure to your body |
| Excretory System | organs in which help remove waste from the body |
| Muscular System | system of muscles that allow your body to flex and extend |
| Respiratory System | system of organs that allow for breathing. |
| Mitosis | the process in which the nucleus of a cell divides. |
| Meiosis | division of a diploid cell which creates four haploid cells. Occurs during formation of sex cells. |
