Answer the following question given this paragraph: It might be fun to lay out in the sun like these two girls are doing. But getting too much sun can be very dangerous. Overexposure to sunlight raises your risk for skin cancer. Q: The risk of what is raised by overexposure to the sun? Choices: - particle cancer - flux cancer - brain cancer - skin cancer A:
skin cancer
Answer the following question given this paragraph: Photosynthesis provides over 99% of the energy supply for life on Earth. A much smaller group of autotrophs - mostly bacteria in dark or low-oxygen environments - produce food using the chemical energy stored in inorganic molecules such as hydrogen sulfide, ammonia, or methane. While photosynthesis transforms light energy to chemical energy, this alternate method of making food transfers chemical energy from inorganic to organic molecules. It is therefore called chemosynthesis , and is characteristic of the tubeworms shown in Figure below . Some of the most recently discovered chemosynthetic bacteria inhabit deep ocean hot water vents or "black smokers. " There, they use the energy in gases from the Earth's interior to produce food for a variety of unique heterotrophs: giant tube worms, blind shrimp, giant white crabs, and armored snails. Some scientists think that chemosynthesis may support life below the surface of Mars, Jupiter's moon, Europa, and other planets as well. Ecosystems based on chemosynthesis may seem rare and exotic, but they too illustrate the absolute dependence of heterotrophs on autotrophs for food. Q: What process provides over 99% of the energy supply for life on earth? Choices: - gases - nutrients - Carbon - photosynthesis A:
photosynthesis
Q: Answer the following question given this paragraph: Vaporization is the process in which a liquid boils and changes to a gas. Q: What does liquid change to due to vaporization? Choices: - plasma - oil - solid - gas A:
A: gas
Question: Answer the following question given this paragraph: Alkenes can react with water to form alcohols. Q: Alkenes can react with what to form alcohols? Choices: - air - proteins - sugars - water A:
Answer: water
*Question*
Answer the following question given this paragraph: The name carbon tetrachloride implies one carbon atom and four chlorine atoms, so the formula is CCl4. Saylor URL: http://www. saylor. org/books. Q: The name carbon tetrachloride implies one carbon atom and four of which other atoms? Choices: - calcium - nitrogen - iodine - chlorine A:
**Answer**
chlorine
Q: Answer the following question given this paragraph: Telophase I and Cytokinesis In telophase, the separated chromosomes arrive at opposite poles. The remainder of the typical telophase events may or may not occur, depending on the species. In some organisms, the chromosomes decondense and nuclear envelopes form around the chromatids in telophase I. In other organisms, cytokinesisthe physical separation of the cytoplasmic components into two daughter cellsoccurs without reformation of the nuclei. In nearly all species of animals and some fungi, cytokinesis separates the cell contents via a cleavage furrow (constriction of the actin ring that leads to cytoplasmic division). In plants, a cell plate is formed during cell cytokinesis by Golgi vesicles fusing at the metaphase plate. This cell plate will ultimately lead to the formation of cell walls that separate the two daughter cells. Two haploid cells are the end result of the first meiotic division. The cells are haploid because at each pole, there is just one of each pair of the homologous chromosomes. Therefore, only one full set of the chromosomes is present. This is why the cells are considered haploidthere is only one chromosome set, even though each homolog still consists of two sister chromatids. Recall that sister chromatids are merely duplicates of one of the two homologous chromosomes (except for changes that occurred during crossing over). In meiosis II, these two sister chromatids will separate, creating four haploid daughter cells. Q: In plants, a cell plate is formed during cell cytokinesis by golgi vesicles fusing at the what? Choices: - tectonic plate - chromosomes plate - mitosis plate - metaphase plate A:
A: metaphase plate