(Q).
Q: What are waves that pass a fixed point in a given amount of time called?   Read this paragraph and choose the correct option from the provided answers:  The number of waves that pass a fixed point in a given amount of time is wave frequency . Wave frequency can be measured by counting the number of crests (high points) of waves that pass the fixed point in 1 second or some other time period. The higher the number is, the greater the frequency of the waves. The SI unit for wave frequency is the hertz (Hz) , where 1 hertz equals 1 wave passing a fixed point in 1 second. The Figure below shows high-frequency and low-frequency transverse waves. You can simulate transverse waves with different frequencies at these URLs: http://phet. colorado. edu/en/simulation/wave-on-a-string and http://zonalandeducation. com/mstm/physics/waves/partsOfAWave/waveParts. htm.   Choices:  - tendency frequency  - combination frequency  - radio frequency  - wave frequency   A:
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wave frequency


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Q: What is glucose used for the bacteria?   Read this paragraph and choose the correct option from the provided answers:  Photosynthetic bacteria use the energy of the sun to make their own food. In the presence of sunlight, carbon dioxide and water are turned into glucose and oxygen. The glucose is then turned into usable energy. Glucose is like the "food" for the bacteria. An example of photosynthetic bacteria is cyanobacteria, as seen in the opening image.   Choices:  - reproduction  - fuel  - energy  - food   A:
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food


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Q: Antibiotics can be used to fight what, in general?   Read this paragraph and choose the correct option from the provided answers:  In summary, society is facing an antibiotic crisis. Some scientists believe that after years of being protected from bacterial infections by antibiotics, we may be returning to a time in which a simple bacterial infection could again devastate the human population. Researchers are working on developing new antibiotics, but few are in the drug development pipeline, and it takes many years to generate an effective and approved drug. Naimi, T. , LeDell, K. , Como-Sabetti, K. , et al. , “Comparison of community- and health care-associated methicillin-resistant Staphylococcus aureus infection,” JAMA 290 (2003): 2976-2984, doi: 10.1001/jama.290.22.2976.   Choices:  - fever  - viruses  - pathogens  - bacteria   A:
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bacteria