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Emilee King-Lab
Emilee King
| Question | Answer |
|---|---|
| What is the variable that is manipulated by the scientist? | Independent variable |
| What is the variable that is measured to see if it is affected the by the independent variable? | Dependent variable |
| What are the variables that are kept constant to prevent them from influencing the dependent variable? | control value |
| What is a testable statement about the relationship between variables? | hypothesis |
| On which axis should the dependent variable be labeled? | Y axis |
| On which axis should the independent variable be labeled? | X axis |
| What is a group that does not received the treatment or independent variable and serves as a baseline for comparison? | Control group. |
| How do you ensure the results are consistent and reliable? | Replication, repeating the experiment |
| Which macromolecule provides energy and structural support? | carbohydrates |
| What are some examples of carbohydrates? | sugars, starches, cellulose, glucose, fructose |
| Which macromolecule stores energy, forms cell membranes, and act as hormones? | lipids |
| What are some examples of lipids? | fats, oils, phospholipids, steroids |
| What macromolecule perform a variety of tasks such as enzymes, structural components, and transport molecules? | Proteins |
| What are examples of proteins? | enzymes, antibodies, collagen |
| What macromolecule stores and transmit genetic information? | nucleic acids |
| What are some examples of nucleic acids? | DNA and RNA |
| What is a small building block molecule? | monomers |
| What are some examples of monomers? | glucose, amino acids, nucleotide |
| What is a large molecule made up of many monomers bounded together? | polymers |
| What are examples of polymers? | starch, protein, DNA |
| What is an instrument used to view small objects by magnifying them? | compound microscope |
| What is the proper procedure for focusing a microscope? | First, start with the lowest power. Use the coarse focus knob, use the fine focus, then adjust the light and condenser for optimal viewing. |
| What is the ability to distinguish between two closely spaced objects? | resolving power |
| What is the degree to which an object is enlarged? | magnification |
| What is the area visible through the microscope? | field of vision |
| What is the thickness of the specimen that is in focus at one time? | Depth of field |
| What is the ocular lens magnification times objective lens magnification? | total magnification |
| What is the measuring divide used to determine the size of objects under a microscope? | micrometer |
| What does the function of the ocular lens? | magnifies the image |
| What is the function of the lenses? | provides different levels of magnification |
| What is the function of the stage? | supports the specimen |
| What is the function of the condenser? | focuses light on the specimen |
| What is the function of the diaphragm? | controls the amount of light passing through the specimen |
| What is the function of the fine and course adjustment knobs? | used to focus the image |
| What is the cell theory? | All living things are made of cells, cells are the basic unit of life, and all cells come from pre-existing cells |
| What is the difference between a prokaryotic cell and a eukaryotic cell? | Prokaryotic has no nucleus, Eukaryotic has a true nucleus |
| What are the four basic requirements for a cell? | plasma membrane, cytoplasm, DNA, ribosomes |
| What is the study of tissues? | histology |
| What type of tissue covers surfaces and lines cavities? | epithelial tissue |
| What type of tissue supports and connects the other tissues? | connective tissue |
| What type of tissue is responsible for movement? | Muscular tissue |
| What type of tissue transmits signals? | nervous tissue |
| What organelles are specific to plant cells? | cell wall, chloroplasts, and large central vacuole |
| What is the function of the cell wall? | provides support and protection |
| What is the function of the chloroplast? | site of photosynthesis |
| What is the function of the large central vacuole? | stores water and other substances |
| What is the random movement of particles in a fluid due to collisions with other molecules? | Brownian motion |
| What is the difference in concentration of a substance across a space? | the concentration gradient |
| Is the movement of molecules from an area of high concentration to an area of low concentration? | diffusion |
| what is the movement of water across a selectively permeable membrane from an area of high water concentration to an area of low water concentration? | osmosis |
| what are four factors that affect diffusion and osmosis rates? | temperature concentration gradient surface area and molecular size |
| what is used to simulate osmosis and diffusion? | dialysis bags |
| what type of tonicity has a lower solute concentration outside the cell and causes water to move into the cell? | hypotonic |
| what type of tonicity has a higher solute concentration outside of the cell and causes water to move out of the cell? | Hypertonic |
| what kind of tonicity has equal solute concentration inside and outside the cell so there's no net movement of water? | isotonic |
| what regulates the movement of molecules in and out of the cell? | cell membrane |
| what does selectively permeable mean? | allow some molecules to pass through easily While others cannot |
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aguyatmhs