Question | Answer |
What is a cell membrane? | Is a structure that protects the cell and controls the movement of particles in and out of the cell. |
What is a cell wall? | Is a tough, rigid structure that surrounds the cell membrane. |
What's cytoplasm? | Is a jelly like substance containing organelles, water, and other life supporting materials. |
What's a nucleus? | Is an organelle that controls all activities within a cell, with genetic material inside. |
What's mitochondria? | Is the energy producing organelle in the cell, it produces energy by cellular respiration. |
What is cellular respiration? | Occurs when chemical energy we take in through food we eat is changed into energy that our cells use to carry out their activities. |
What is chloroplast? | Is the organelle that traps energy from the sun and changes it into chemical energy. |
What's a vacuole? | Is an organelle that performs several functions, such as temporary storage of substances and water regulation. They tend to be larger in plant cells. |
What's a vesicle? | Is a membrane bound sac that's smaller than a vacuole, they move materials, into, out of, and around the cell. |
What is the Endoplasmic Reticulum(E.R)? | The E.R. is a network of membrane covered channels in the cytoplasm that transport materials. |
What's the Golgi Body? | Is an organelle that packages some materials for transportation in and out of the cell. |
What's the Lysosome? | Is an organelle that breaks down other organelles and recycles them when they wear out. |
What are ribosomes? | Assemble proteins, each is like a small factory that manufactures proteins. |
What's the three points of cell theory? | 1)The cell is the basic unit of life.
2)All organisms are composted of one or more cells. 3)All come from other living cells. |
What are Prokaryotic cells? | Organelles that are not surrounded by membrane. |
What are Eukaryotic cells? | Organelles that are surrounded by membrane. |
What's the difference between plant and animal cells? | Plant Cells have a cell wall and chloroplasts, and the animal call doesn't. |
What are the Characteristics of living things? | Respond to the environment, made of cells, grows, needs energy, reproduce, produces and gets rid of waste, and exchanges gases. |
What's diffusion? | The movement of particles from an area of higher concentration to an area of low concentration. |
What's a selectively permeable membrane? | It only lets some things pass through. |
What's a permeable membrane? | It lets basically anything through. |
What's a impermeable membrane? | It doesn't let anything through. |
What's equilibrium? | When there's an equal amount of particles on both sides. |
What's Osmosis? | The diffusion of water particles through a selectively permeable membrane. |
How are bodies organized? | Cells -> Tissues -> Organs -> Organ Systems -> Organism. |
What are the components of blood? | Solid and Liquid. |
What's Solid Blood? | Red and white blood cells, and platelets. |
What's Liquid Blood? | Plasma. |
What percentage is water and what percentage is dissolved material in plasma? | 92% is water, and 8% is dissolved. |
What are the three types of blood vessels? | Capillaries, veins, and arteries. |
Describe the path of air from your mouth to your lungs. | Air enters through your mouth or nose, then goes down to your larynx, then to your trachea then through your bronchi, and directly into your lungs. |
What's a basic procedure with microscopes? | Carry and hold the microscope with two hands, and have a clear space on your work area. |
What's depth of field? | The distance from the objective lens that's in focus. |
What's field of view? | The area that is visible under the microscope. |
What happens to the image under the microscope? | It gets magnified. |
how do you calculate total magnification? | Low/medium/high power lens x eyepiece lens [low=4/medium=10/high=40,eyepiece=10] |
How is oxygen and carbon dioxide exchanged in the alveoli? | By diffusion. |
What does your epiglottis do? | It stops food from going into your lungs. |