Answer the following question given this paragraph: Q: What pigment is required for photosynthesis to occur? Choices: - carotene - chroma - xanthophyll - chlorophyll A:
chlorophyll
Answer the following question given this paragraph: Because of human activities, there is more carbon dioxide in the atmosphere today than in the past hundreds of thousands of years. Burning fossil fuels and has released great quantities of carbon dioxide into the atmosphere. Cutting forests and clearing land has also increased carbon dioxide into the atmosphere because these activities reduce the number of autotrophic organisms that use up carbon dioxide in photosynthesis. In addition, clearing often involves burning, which releases carbon dioxide that was previously stored in autotrophs. Q: Cutting forests and clearing land has also increased the amount of what in the atmosphere? Choices: - oxygen - smog - pesticides - carbon dioxide A:
carbon dioxide
Q: Answer the following question given this paragraph: Most gemstones are not used exactly as they are found in nature. Usually, gems are cut and polished. Figure below shows an uncut piece of ruby and a ruby that has been cut and polished. The way a mineral splits along a surface allows it to be cut to produce smooth surfaces. Notice that the cut and polished ruby sparkles more. Gems sparkle because light bounces back when it hits them. These gems are cut so that the most amount of light possible bounces back. Other gemstones, such as turquoise, are opaque, which means light does not pass through them. These gems are not cut in the same way. Q: What are gemstones known as when light cannot pass through them? Choices: - inorganic - blocking - protective - opaque A:
A: opaque
Question: Answer the following question given this paragraph: 17.2 | Mapping Genomes By the end of this section, you will be able to: Define genomics Describe genetic and physical maps Describe genomic mapping methods Genomics is the study of entire genomes, including the complete set of genes, their nucleotide sequence and organization, and their interactions within a species and with other species. Genome mapping is the process of finding the locations of genes on each chromosome. The maps created by genome mapping are comparable to the maps that we use to navigate streets. A genetic map is an illustration that lists genes and their location on a chromosome. Genetic maps provide the big picture (similar to a map of interstate highways) and use genetic markers (similar to landmarks). A genetic marker is a gene or sequence on a chromosome that co-segregates (shows genetic linkage) with a specific trait. Early geneticists called this linkage analysis. Physical maps present the intimate details of smaller regions of the chromosomes (similar to a detailed road map). A physical map is a representation of the physical distance, in nucleotides, between genes or genetic markers. Both genetic linkage maps and physical maps are required to build a complete picture of the genome. Having a complete map of the genome makes it easier for researchers to study individual genes. Human genome maps help researchers in their efforts to identify human disease-causing genes related to illnesses like cancer, heart disease, and cystic fibrosis. Genome mapping can be used in a variety of other applications, such as using live microbes to clean up pollutants or even prevent pollution. Research involving plant genome mapping may lead to producing higher crop yields or developing plants that better adapt to climate change. Q: What term describes a gene or sequence on a chromosome that co-segregates (shows genetic linkage) with a specific trait? Choices: - nucleic acid chain - analogous effect - autosomal - genetic marker A:
Answer: genetic marker
*Question*
Answer the following question given this paragraph: Even though large life forms have been very successful on Earth, most of the life forms on Earth today are still prokaryotessmall, relatively simple single-celled organisms. Fossils indicate that many organisms that lived long ago are extinct. Extinction of species is common; in fact, it is estimated that 99% of the species that have ever lived on Earth no longer exist. Q: An estimated 99 percent of the species that have ever lived on earth no longer exist, showing that what event is common? Choices: - accumulation - over fishing - pollution - extinction A:
**Answer**
extinction
Answer the following question given this paragraph: Examples of machines that increase the distance over which force is applied are paddles and hammers. Figure below explains how these machines work. In each case, the machine increases the distance over which the force is applied, but it reduces the strength of the applied force. Q: Paddles and hammers are examples of simple machines that increase the distance over which force is applied, while reducing what? Choices: - momentum - gravity - intensity - strength A:
strength