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Biology exam review
| Question | Answer |
|---|---|
| what is required for something to be considered a living organism? | it must be made of cells |
| why are viruses not classified as living? | they are not made of cells |
| how do viruses reproduce compared to cells? | viruses use host cells to make copies cells divide by cell division |
| what do living organisms carry out that viruses do not? | metabolism |
| what is found in cells but not viruses? | ribosomes |
| A bacteria pumps extra salt out to keep its inside balance. This is an example of what? | homeostasis |
| what is homeostasis? | the ability of living organisms to maintain a stable environment |
| what are the two characteristics found in all living organisms | cells and metabolism |
| which observation is evident that something is living | organelles and perform cellular respiration |
| which of the following is a micromolecule that stores genetic information | nucleic acid |
| Marcomolecule help speed up chemical reactions in the body | proteins |
| A student want to snack for a quick energy before a race which macromolecule should they choose? | carbohydrates |
| what is the function of lipids? | long-term energy |
| what is the function of carbohydrates? | cell membrane structure |
| What is the function of nucleic acid? | immune system support |
| which macromolecule is made of fatty acids | lipid |
| what is the role of enzymes in digestion ? | speed up reactions |
| why do proteins have different functions in cells? | they have different shapes that match specific task |
| Which process breaks down macromolecules using water? | hydrolysis |
| which organelle controls the cells activities and contains DNA | The nucleus |
| which organelle is responsible for energy production | mitochondria |
| which process moves molecules from high to low concentration without energy | diffusion |
| compare prokaryotes and eukaryotes cells | eukaryotes have organelles prokaryotes do not |
| which organelle helps remove waste from the cell | lysosome |
| which process requires energy to remove substances? | endocytosis |
| what is the main role of the cell membrane? | Controls what enters and leaves the cell |
| which transport method uses protein channels, but no energy | facilitated diffusion |
| if the mitochondria stopped working, what will happen to the cell | it will run out of energy |
| A cell in a hypertonic solution begin to swell. What process is this? | Osmosis |
| During which stage of cell cycle does the cell divide | mitosis |
| Compare asexual and sexual reproduction | asexual reproduction, create, identical, offspring, sexual reproduction, create varied off spring |
| what happens when the cell cycle is not regulated properly | cancerous cells may form |
| which of the following is the longest state of the cell cycle? | interphase |
| why do cells divide when they grow too large | to maintain surface area to volume ratio |
| which organism used binary fission to reproduce? | bacterium |
| what is cell differentiation? | cells become specialized for specific functions |
| what is an advantage of asexual reproduction? | fast reproducing |
| how does mitosis help maintain genetic continuity | it produces identical daughter cells |
| what are reactants of photosynthesis | carbon dioxide and water |
| what are the products of cellular respiration | carbon dioxide , water, and atp (energy) |
| how are photosynthesis and respiration related | The products of one are the reactants of the other |
| ATP converting to ADP represents what | Energy released |
| where does the kerbs cycle occur? | mitochondria |
| which organism in a food web gets the most energy | Producer |
| why does energy decrease at each level of the energy pyramid | Energy is lost as heat |
| how do photosynthesis affect the carbon cycle | removes carbon dioxide from the atmosphere |
| how does respiration affect the oxygen cycle? | uses oxygen and releases carbon dioxide |
| why are plants and animals interdependent in energy food | plants produce oxygen and glucose animals use them in return of carbon dioxide |
| which biogeochemical cycle involves photosynthesis and cellular respiration | carbon cycle |
| which of the following trophic levels has access to the most energy in the ecosystem | Producer |
| after a community is distributed by a large scale events such as forest fire, a new community is established through which process | secondary succession |
| in an ecosystem, what happens to the atoms of certain chemical elements such as carbon oxygen and nitrogen? | they move into and out of living systems |
| Forest re-growing after fires is an example of what | secondary succession |
| which plant behavior helps it respond to light? | Photo trophism |
| What is an example of a nonrenewable resource? | coal |
| which solution helps reduce greenhouse, gas producing | switch to solar energy |
| what is a mechanical defense in animals? | Shell or spines |