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AP BIO TEST
| Question | Answer |
|---|---|
| which of the following graphs is most appropriate representation of the experimental results documented in the table? | Bar graph |
| which of the following is responsible for the cohesive property of water? | Hydrogen bonds between the oxygen atom of one water molecule and a hydrogen atom of another water molecule |
| Specific heat | heat absorption w/o temp change |
| three states of matter | Ice-liquid-gas kinetic energy diff |
| repels hydrophobic material | moves aside nonpolar substances |
| waters role as a medium | diffusion- allows movement of materials |
| waters ability to moderate temp | specific heat - moderates climate, maintains stable temp |
| water from the roots to the leaves | root pressure - driven by osmosis .movement of water |
| based on fig 1 which of the following best describes how the properties of water at an air-water interface enable as insect to walk on water surface? | hydrogen bonds between molecules at the surface of the water provides surface tension, which allows the water surface to deform but not break under the insect |
| which of the following is most directly responsible for waters unique properties? | form hydrogen bonds |
| which of the following statements best describe how organisms such as rabbits obtain the carbon necessary for building biological molecules | rabbits eat plants and break down plant molecules to obtain carbon and other atom that they rearrange into new carbon containing molecules |
| which of the following describes the relationship between the amount of chlorophyll A in water sample and the concentration of nitrogen in that sample | the concentration of nitrogen and chlorophyll A are directly correlated |
| which of the following was the dependent variable in the researcher study? | the concentration of chlorophyll A |
| which of the following best explains how higher concentrations of nitrogen and phosphorus contribute to eutrophication | algae requires nitrogen and phosphorus to build macromolecules, so higher concentration of these nutrients can result in algal blooms |
| which statement best helps explain the formation of the hydrogen bond represented in the figure | nitrogen has a partial negative charge, and the hydrogen attached to the oxygen has a partial positive charge |
| describe why hydrogen bonds form between water molecules | slightly neg charge 0 at is attracted to one of the slightly pos charged H |
| explain why the arrangement of water molecules in different in ice and water | water cools, slows down, hydrogen bond between them become more stable |
| help explain surface tension, use a single water molecule in the template | response has arrows drawn from one of the water molecules at the surface of the water |
| arrangement of water molecules in the ice cause it to float | reduce heat loss for the water below the ice |
| a common test for liver function involves sprinkling sulfur powder onto a sample of urine | bile salts decrease the surface tension of the urine sample |
| which is the following statements best describes how molecules released by the fish become nutrients for the plants? | the ammonia molecules released by the fish are converted by the bacteria to nitrates |
| humans produce sweat as a cooling mechanism a stable internal temp | high heat of vaporization |
| a feature of organic compounds NOT found in inorganic compounds sdfadfs | carbon atoms covalently bonded to each other |