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Biology 9 Weeks- 1-8
| Question | Answer |
|---|---|
| formed when one or more electrons are transferred from one atom to another | ionic bond |
| it is a mixture of two or more substances which are evenly distributed | solution |
| smallest basic unit of matter | atom |
| a substance consisting entirely of one type of atom | element |
| a type of chemical bond formed by sharing of electrons between atoms | covalent bond |
| the small joining of larger molecules | monomer |
| large compound formed from combinations of smaller units | polymers |
| a process that changes one set of chemicals into another set of chemicals | chemical reaction |
| element or compound that enters into a chemical reaction | reactant |
| a substance that speeds up the rate of a chemical reaction | catalyst |
| large carbohydrate macromolecule | polysaccharide |
| an attraction between molecules of the same substance | cohesion |
| mixture of water and non-dissolved material | suspension |
| a pH less than 7 | acid pH |
| a protein that lowers the energy of activation for a reaction | enzyme |
| a polar covalent molecule, universal solvent | water |
| substance in which a solute is dissolved to form a solution | solvent |
| a pH greater than 7 | basic pH |
| proton, neutron, and electron | subatomic particles |
| TRUE or FALSE? An electron is a negatively charged subatomic particle. | true |
| TRUE or FALSE? Neutron is a non charged subatomic particle. | true |
| TRUE or FALSE? Proton is a positively charged subatomic particle. | true |
| TRUE or FALSE? DNA is the nucleic acid that stores and transmits genetic information. | true |
| TRUE or FALSE? A nucleotide is composed of a six carbon sugar, phosphate group, and a nitrogenous base. | false |
| TRUE or FALSE? Glucose is a monosaccharide. | true |
| If two electrons are shared in a single covalent bond and four electrons are shared in a double covalent bond how many electrons are shared in a triple covalent bond? | 6 |
| packaging/ storage organelle | Golgi apparatus |
| contains nearly all cellular DNA | nucleus |
| Captures sunlight energy and converts to chemical energy | chloroplasts |
| helps cell maintain its shape | cytoskeleton |
| has both smooth and rough forms that produce lipid and proteins | endoplasmic reticulum |
| found inside the nucleus | nucleolus |
| simpler cell type, does not have organized nucleus | prokaryote |
| a cell type that separates genetic material from the rest of the cell's structure | eukaryote |
| a structure that regulates what enters and leaves the cytoplasm in both plant and animal cell | cell membrane |
| is a feature of only plant cells | cell wall |
| is the migration of water across a semipermeable membrane | osmosis |
| passively moves substances into and out of the cytoplasm | diffusion |
| TRUE or FALSE? A tissue is composed of a group of similar cells. | true |
| TRUE or FALSE? The core of the cell membrane is made of a lipid monolayer. | false |
| TRUE or FALSE? An isotonic solution has the same concentration of solute on both sides or a membrane. | true |
| TRUE or FALSE? Hypertonic extra cellular fluid causes water to migrate into the cytoplasm. | false |
| Active transport requires energy and movement against a concentration gradient. Which is NOT an example of active transport? a) phagocytosis b) diffusion c) pinocytosis | B |
| Endocytosis is movement of fluid or liquid. a) into the cytoplasm b) out of the cytoplasm | A |
| Concentration of a solution is a) amount of solute/amount of solvent b) amount of solvent/amount of solute | A |
| Hypotonic solutions have a) more solute than solvent b) less solute than solvent | B |
| Which is not an example of an organelle? a) Vacuole b) Cytoplasm c) ribosome | B |
| Which organelle does NOT contain its own DNA? a) Chloroplasts b) Mitochondria c) Lysosomes | C |
| Use less than 20 words to explain the theory of ENDOSYMBIOSIS. | The theory that eukaryotic cells are formed from a symbiosis between several prokaryotic organisms. |
| the ability to maintain constant conditions (stay the same) | homeostasis |
| a collection of living matter enclosed by a barrier membrane | cell |
| a decimal system of measurements of units scaled on multiples of 10 | metric system |
| proven explanations of a phenomenon that occurs int he natural world | theory |
| proposed, but UNPROVEN explanations of observed facts | hypothesis |
| device that produces images of structures too small fro viewing by the unaided eye | microscope |
| the study of all living things | biology |
| TRUE or FALSE? It is necessary to place your nose directly over containers to smell odors in the lab. | false |
| TRUE or FALSE? If you wear contact lenses it is NOT necessary to wear goggles in the lab. | false |
| TRUE or FALSE? If you are not working with chemicals it is alright to wear open sandals in the lab. | false |
| centrifuge spinning of cell parts | cell fractionation |
| science that describes the living world | biology |
| chemical reactions carried out by cells | metabolism |
| orderly way to learn about the natural world | science |
| well tested explanation; unifies observations | theory |
| factor purposely changed in an experiment | manipulated variable |
| two cell lines unite to produce offspring | sexual reproduction |
| information gathered from observations | data |
| it is based on prior knowledge/ experience | inference |
| signal to which on organism responds | stimulus |
| TRUE or FALSE? Homeostasis makes internal conditions fairly constant to promote survival. | true |
| TRUE or FALSE? All living things reproduce. | true |
| TRUE or FALSE? LIving things need to obtain and use materials and energy. | true |
| TRUE or FALSE? Living things change over time. | true |
| TRUE or FALSE? Good scientists are skeptics. | true |
| these practices keep persons handling dangerous substances from injury | lab safety |
| a way to prove or disprove a hypothesis | scientific method/theory |
| a way to visualize living cells | light microscope |
| a way to view deepest details of cell of structure (non-living material) | electron microscope |
| also known as a dependent condition in an experiment | responding variable |
| a way to maintain constant conditions for other factors in an experiment | controlled experiment |
| a theory that was disproves over many years regarding the origin of life | spontaneous generation |
| develops from a single original cell growing in a nutrient solution | cell culture |
| allows scientists to make accurate predictions | theory/scientific method |
| uses multiples of ten to make measurements | metric system |
| Photosynthesis Equation | 6 H20 + 6 CO2 -- radiant energy -> C6 H12 O6 + 6 O2 |
| 3 factors affecting photosynthesis: | 1) LIGHT 2) WATER 3) TEMPERATURE |