Q: What is the name for compounds that contain only carbon and hydrogen? Read this paragraph and choose the correct option from the provided answers: The fuel that burns in a combustion reaction contains compounds called hydrocarbons. Hydrocarbons are compounds that contain only carbon (C) and hydrogen (H). The charcoal pictured in the Figure above consists of hydrocarbons. So do fossil fuels such as natural gas. Natural gas is a fuel that is commonly used in home furnaces and gas stoves. The main component of natural gas is the hydrocarbon called methane (CH 4 ). You can see a methane flame in the Figure below . The combustion of methane is represented by the equation:. Choices: - particles - carbohydrates - carbides - hydrocarbons A:
hydrocarbons

Q: In plants, a high concentration of iaa inhibits what? Read this paragraph and choose the correct option from the provided answers: the bottom of the cell. In roots, a high concentration of IAA inhibits cell elongation. The effect slows growth on the lower side of the root, while cells develop normally on the upper side. IAA has the opposite effect in shoots, where a higher concentration at the lower side of the shoot stimulates cell expansion, causing the shoot to grow up. After the shoot or root begin to grow vertically, the amyloplasts return to their normal position. Other hypothesesinvolving the entire cell in the gravitropism effecthave been proposed to explain why some mutants that lack amyloplasts may still exhibit a weak gravitropic response. Choices: - Cell reproduction - same elongation - technology elongation - cell elongation A:
cell elongation

Q: Q: Change in what equals the average net external force multiplied by the time this force acts? Read this paragraph and choose the correct option from the provided answers: p = F nett, we can see how the change in momentum equals the average net external force multiplied by the time this force acts. The quantity F net t is given the name impulse. Impulse is the same as the change in momentum. Impulse: Change in Momentum Change in momentum equals the average net external force multiplied by the time this force acts. Choices: - lag - height - rate - momentum A:
A: momentum

Question: Q: What type of gases are used for balloons, light bulbs and lighted signs? Read this paragraph and choose the correct option from the provided answers: Noble gases are used for balloons, light bulbs, and lighted signs. Choices: - ignoble - helium - heavy - noble A:
Answer: noble

*Question*
Q: What is the process of making atp without oxygen called? Read this paragraph and choose the correct option from the provided answers: An important way of making ATP without oxygen is called fermentation . It involves glycolysis, but not the other two stages of aerobic respiration. Many bacteria and yeasts carry out fermentation. People use these organisms to make yogurt, bread, wine, and biofuels. Human muscle cells also use fermentation. This occurs when muscle cells cannot get oxygen fast enough to meet their energy needs through aerobic respiration. Choices: - condensation - photosynthesis - Cell Division - fermentation A:
**Answer**
fermentation

Q: What is the term for plants that lack vascular tissues, roots, leaves, seeds, and flowers? Read this paragraph and choose the correct option from the provided answers: Modern nonvascular plants are called bryophytes. There are about 17,000 bryophyte species. They include liverworts, hornworts, and mosses. Mosses are the most numerous group of bryophytes. You can see an example of moss in Figure below . Like the moss in the figure, most bryophytes are small. They lack not only vascular tissues. They also lack true roots, leaves, seeds, and flowers. Bryophytes live in moist habitats. Without the adaptations of vascular plants, bryophytes are not very good at absorbing water. They also need water to reproduce. Choices: - chloroplasts - primates - conifers - bryophytes A:
bryophytes