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23 Cards in this Set
- Front
- Back
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What is the smallest unit of life?
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cell
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What kingdom do prokaryotes (bacteria) belong to?
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Monera
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List the steps of the scientific method.
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observation, question, hypothesis, experiment, conclusion, publish
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What are the characteristics of life?
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1. can take in and use energy
2. can respond to their environment 3. can maintain a constant internal environment 4. inherited information base (DNA), allows them to function 5. can reproduce thru the information encoded in DNA 6. composed of 1 or more cells 7. evolved from other living things 8. highly organized organized compared to inanimate objects |
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State the difference between organic and inorganic.
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organic contains carbon, inorganic does not
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What are the four organic compounds?
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carbohydrates, lipids, proteins, nucleic acids
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Describe the difference between prokaryotes and eukaryotes.
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Eukaryotes have a nucleus and are larger cells
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Describe the difference between aerobic and anaerobic.
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aerobic = with oxygen
anaerobic = without oxygen |
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State the characteristics of water.
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1. its a solvent
2. specific heat 3. surface tension 4. cohesion 5. ice floats |
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What molecules can diffuse through the cell membrane?
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water, glucose, amino acids
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List the levels of organization starting with atoms.
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atom, molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere
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Why is biology difficult to study?
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it is very diverse and is always changing
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DNA sends what to makes proteins? (DNA's little helper)
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RNA
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Carbs stored in plants as?
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starch
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Carbs stored in animals as?
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fat
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Describe the difference between unsaturated and saturated.
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saturated: no double bonds between the carbon atoms
unsaturated: one or more double bond between the carbon atoms (mono=1, poly=2 or more) |
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What is the function of proteins in the plasma membrane?
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structural support, recognition, communication, transport
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A, T, C, and G are nucleotides and make up what?
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DNA
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What happens when a protein is folded incorrectly?
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has no function
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Describe the difference between passive and active transport.
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active: energy is needed for movement across the plasma membrane
passive: does not require energy |
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Where do plants get their energy at night?
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stored energy
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Holds in the cytoplasm.
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plasma membrane
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Short-term storage of energy in animals, found in muscle and liver cells.
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glycogen
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