Answer the following question given this paragraph: Most prokaryotes have a peptidoglycan cell wall and many have a polysaccharide capsule (Figure 4.5). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces in its environment. Some prokaryotes have flagella, pili, or fimbriae. Flagella are used for locomotion. Pili are used to exchange genetic material during a type of reproduction called conjugation. Fimbriae are used by bacteria to attach to a host cell. Q: The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents what? Choices: - extinction - exhaustion - Respiration - dehydration A:
dehydration
Answer the following question given this paragraph: Q: The electron beam scans the surface of the sample, usually coated with a thin film of which metal? Choices: - platinum - silver - copper - gold A:
gold
Q: Answer the following question given this paragraph: Humidity is the amount of water vapor in the air. Humidity varies from place to place. It also varies in the same place from season to season. On a summer day in Atlanta, Georgia, humidity is high. The air feels very heavy and sticky. On a winter day in Flagstaff, Arizona, humidity is low. The air sucks moisture out of your nose and lips. Humidity can change rapidly if a storm comes in. Humidity can vary over a short distance, like near a lake. Even when humidity is at its highest, water vapor makes up only about 4% of the atmosphere. Q: What is the name for the amount of water vapor in the air? Choices: - ambient - heat - viscosity - humidity A:
A: humidity
Question: Answer the following question given this paragraph: Animals are multicellular eukaryotes in the Animal Kingdom. They are heterotrophic, meaning that they consume other organisms. Animals have specialized cells and often higher levels of organization. This allows them to do things that other eukaryotes cannot, such as move and digest food internally. Animals generally have a simple life cycle. Q: What do heterotrophic animals usually consume? Choices: - soil - minerals - plants - other organisms A:
Answer: other organisms
*Question*
Answer the following question given this paragraph: Cow manure can have a second life as a source of methane gas, which can be converted to electricity. Not only that food scraps can also be converted into green energy. Q: Cow manure can have a second life as a source of what gas? Choices: - freon - hydrogen - ethanol - methane A:
**Answer**
methane
*Question*
Answer the following question given this paragraph: After doing the research, the farmer will try to answer the question. She might think, "If I don't plow my fields, I will lose less soil than if I do plow the fields. Plowing disrupts the soil and breaks up roots that help hold soil in place. " This answer to her question is a hypothesis . A hypothesis is a reasonable explanation. A hypothesis can be tested. It may be the right answer, it may be a wrong answer, but it must be testable. Once she has a hypothesis, the next step is to do experiments to test the hypothesis. A hypothesis can be proved or disproved by testing. If a hypothesis is repeatedly tested and shown to be true, then scientists call it a theory . Q: What is another name for a reasonable explanation for something that might be formed near the beginning of a scientific inquiry into a problem? Choices: - experiment - conclusion - theory - hypothesis A:
**Answer**
hypothesis