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Can’t find a wrench? On Earth, that’s no problem. You can buy a new one at a nearby hardware store. In space, though, a lost wrench is a different story. Astronauts aboard the International Space Station (ISS) may wait m...

Researchers are considering using 3-D bioprinters to print organs in space. They have found that microgravity may prevent delicate printed organs from collapsing, or caving in. Printing organs in space is a chance to mak...

During photosynthesis, plants make sugar molecules. If the plant cells do not use the sugars immediately, the plant will A. store the sugars as carbohydrates. B. develop plant diabetes. C. dissolve the sugars. D. give th...

Green plants produce sugar in their leaves through the process of photosynthesis. To make this sugar, plants must acquire some materials from their environment. Arrow 1 represents _______, a gas that is taken in by the p...

The main reason that cells carry out cellular respiration is to _______. A. get glucose B. release energy C. eliminate wastes D. breathe