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Cards In This Set
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Describe the features common to all living things.
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A) Order
b) Evolutionary adaptation c) Response to the enviroment d) Regulation e) Energy processing f) Growth and development g) Reproduction |
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Describe some of the emergent properties that characterize living organisms.
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1)Biosphere, Ecosystems, Communities, Populations, Organisms
2)Organ and Organ Systems, Tissues,Cells,Organelles,Molecules |
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Distinguish between prokaryotic and eukaryotic cells.
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 Prokaryotic Cell: the DNA is not separated from the rest of the cell by enclosure in a membrane-bounded nucleus. Lack the other kinds of membrane-enclosed organelles that characterize eurkaryotic cells. Eurkaryotic Cell: is subdivided by internal membranes into various membrane-enclosed organelles. In most Eurkaryotic cells the largest organelle is the nucleus-which contains the cells DNA. |
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Distinguish between a hypothesis and a theory.
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Hypothesis: Tentative answer to a well-framed question, an explanation on trial, makes predictions that can be tested, must be testable, must be falsifiable.
Theory: Is broad in scope, generates new hypotheses, is supported by a large body of evidence, a human description for the way things normally work. |
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Distinguish between discovery science and hypothesis-based science.
Explain why both types of exploration contribute to our understanding of nature. |
Discovery Science: Describes natural structures and processes as accurately as possible through careful observation and analysis of data.
Hypothesis-based Science: Usually involves the proposing and testing of hypothetical explanations, or hypotheses. Scientific Inquiry |
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Distinguish between a scientific hypothesis and a null hypothesis.
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Null Hypothesis: A statistical hypothesis- zero difference between control and experimental groups
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Describe the characteristics of a good scientific hypothesis.
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Testable, & Falsifiable
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Describe the characteristics of controls in experiments.
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The control group is a group that nothing happens to. (Placebo)
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If you were to test the hypothesis that application of a fertilizer solution (e.q. Miracle Grow) to tomato plants reults in more and bigger tomatoes, describe how you would se up such an experiment, how you would treat your control group, and how you would collect and analyze your data.
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Control group would get a placebo miracle grow, after about 1-2 weeks collect data on which tomatoes grew more the control group with a fake miracle grow or the experimental group with the miracle grow. If the experimental group with the miracle grow grew bigger and better tomatoes then that would be one test that proved my theory.
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Identify the four elements that make up 96% of living matter.
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Carbon, Nitrogen, Oxygen, Hydrogen
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Draw and label a simplified model of an atom.
A carbon atom. |
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Explain how the atomic number and mass number of an atom can be used to determine the number of neutrons.
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Basically, mass number is the sum of protons plus neutrons, while atomic number is just the number of protons. So if you subtract the atomic number from the massnumber you should be left with the number of neutrons.
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Describe how to calculate the molecular weight of a substance based on a molecular formula (such as C6H12O6 and H2O). If you weighed this value out in grams, how many molecules of each substance would you have?
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Take C6 x Carbons atomic weight which is 12 and get 72, H12 x Hydrogens atomic weight which is 1 and get 12, and finally take O6 x Oxygens atomic weight and get 96.
Add them all together: 72+12+96=180 grams/molecules. H2O, take H x Hydrogens atomic weight = 1, take O x Oxygens atomic weight = 32, so add them all together, 32+1= 33 grams/molecules |
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Explain how two isotopes of an element are similar. Explain how they are different.
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They are similar because they have the same number of protons, but some atoms have more neutrons than other atoms of the same element and therefore have greater mass.
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Describe the properties of nonpolar covalent, polar covalent and ionic bonds.
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Nonpolar Covalent: Between two atoms of the same element, the electrons are shared equally because the two atoms have the same electronegativity.
Polar Covalent: If the electron in a covalent bond are not shared equally by the two atoms Ionic Bonds: Atoms can transfer valence electrons to form ions that interact through their charges. |
