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Science LE regents
Living environment regents review
| Question | Answer |
|---|---|
| What is the DEPENDENT variable? | The variable that is effected by the INdependent variable in order to test the hypothesis. |
| What is the INDEPENDENT variable? | The variable that is changed by the researcher and effects the dependent variable. |
| What is the constant in a controlled study? | The factors of a controlled study that remain the same in all trials. |
| What is the control group? (Controlled study) | The group that is compared to the experimental group, considered the "standard conditions." |
| What is the experimental group? (Controlled study) | The group experimented on in order to compare to the control group. |
| What is biology? | The study of living things. |
| What is homeostasis? | Maintaining balance internally despite a constantly changing external environment. |
| What is the purpose of the 8 life processes? | To maintain life! (Homeostasis) |
| What is asexual? | Having only one parent. (cell division) |
| What is sexual? | Having two parents. (complex organisms) |
| When using a compound microscope, how is the image altered? | It flips it and reverses it. ;) |
| What is magnification? | Ratio of image size to the object size. |
| How is total magnification found? | The ocular lens times the objective lens. (ocular x obj. = total mag.) |
| Which structure holds the microscope? | The base. |
| Where is the slide placed on the microscope? | The stage. |
| What holds the slide in place? | Stage clips. |
| What holds the three objective lenses? | The (Revolving) nosepiece. |
| What are the three objective lenses? | Scan, low, and high. |
| What is course adjustment? | Larger knob that raises and lowers the stage, used to focus on SCAN and LOW ONLY!!! |
| Why can't course adjustment be used on high power? | The stage will damage the objective lens. |
| What is fine adjustment? | Smaller knob that moves the stage (barely), used for final focusing, typically used for high power. |
| Which piece regulates light coming in? | Diaphragm. |
| What is a meniscus and how is it read? | The top of a beaker of water where it curves, read from the bottom. |
| What is the cell theory? | - All cells come from pre-existing cells. - Cells are the basic structure of living things. - Cells are the basic function of living things. |
| What is prokaryotic? | A cell with no organelles. |
| What is eukaryotic? | A cell with organelles. (complex organisms) |
| What is a hypothesis? | An educated inference made by researchers before conducting a controlled study. |