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Science-Maria f test
| Question | Answer |
|---|---|
| Which of the folowing statements about cells is true? a)Cells are the structures that contain all of the materials necessary for life b)Cells are found in all organisms c)Cells are sometimes specialized for particular functions d)All of the above | d) All the above |
| Which of the following statements about all living things is true? a)All living things reproduce sexually b)All living things have one or more cells c)All living things must make their own food d)All living things reproduce asexually | b) All living things have one or more cells |
| Organisms must have food because a)food is a source of energy b)food supplies cells with oxygen c)organisms never make their own food d)All of the above | a) food is a source of energy |
| A change in an organism’s environment that affects the organism’s activities is a a)response b)stimulus c)metabolism d)producer | b) stimulus |
| What is the difference between asexual reproduction and sexual reproduction? | In sexual reproduction, two parents produce offspring that will share characteristics of both parents. In asexual, reproduction, a single parent produces offspring that are identical to the parent. |
| In one or two sentences, explain why living things must have air. | Most organisms need oxygen from air to release energy from food. Green plants, algae, and some bacteria need carbon dioxide from air for photosynthesis. |
| Analyzing Ideas- A flame can move, grow larger, and give off heat. Is a flame alive? Explain. | The flame is not alive. Although a flame can move, grow, and give off heat, it does not have all the characteristics of a living organisms. For example, a flame is not made up of cells and does not contain DNA. |
| Evaluating Hypotheses- Your friend tells you that the stimulus of music makes his goldfish swim faster. How would you design a controlled experiment to test your friend’s claim? | I could pu the fish bowl in a box, making sure that the fish does not see anything outside the bowl. I would make sure the fish got light, air, and food in regular amounts. I'd watch the fish with and without the stimulus of music to see what happened. |
| Scientists classify organisms by a)arranging the organisms in orderly groups b)giving the organisms many common names c)deciding whether the organisms are useful d)using only existing categories of classification | a) arranging the organisms in orderly groups |
| When the eight levels of classification are listed from broadest to narrowest, which level is sixth in the list? a)class b)order c)genus d)family | d) family |
| The scientific name for the European white waterlily is Nymphomania. To which genus does this plant belong? |
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mariaf251