Answer the following question given this paragraph: All living things need energy. You can often see energy at work in living things. Look at the hummingbird and jellyfish in Figure below . Both of them are obviously using energy. Living things constantly use energy in less obvious ways as well. Inside every cell, all living things need energy to carry out life processes. Life runs on chemical energy. Where does this chemical energy come from?. Q: Each cell and every living thing requires what? Choices: - potassium - calcium - salt - energy A:
energy

Answer the following question given this paragraph: All plants have a characteristic life cycle that includes alternation of generations . Plants alternate between haploid and diploid generations. Alternation of generations allows for both asexual and sexual reproduction. Asexual reproduction with spores produces haploid individuals called gametophytes . Sexual reproduction with gametes and fertilization produces diploid individuals called sporophytes . A typical plant's life cycle is diagrammed in Figure below . Q: The plants alternation between haploid and diploud generations allow it to do what? Choices: - reproduce asexually and simultaneously - reproduce sexually and autonomously - reproduce asexually and biologically - reproduce asexually and sexually A:
reproduce asexually and sexually

Answer the following question given this paragraph: Soaps and Detergents Pioneers made soap by boiling fats with a strongly basic solution made by leaching potassium carbonate, K2CO3, from wood ashes with hot water. Animal fats contain polyesters of fatty acids (long-chain carboxylic acids). When animal fats are treated with a base like potassium carbonate or sodium hydroxide, glycerol and salts of fatty acids such as palmitic, oleic, and stearic acid are formed. The salts of fatty acids are called soaps. The sodium salt of stearic acid, sodium stearate, has the formula C17H35CO2Na and contains an uncharged nonpolar hydrocarbon chain, the C17H35 unit, and an ionic carboxylate group, the CO 2 unit (Figure 11.32). Q: What are the salts of fatty acids called? Choices: - dyes - creams - malts - soaps A:
soaps

Answer the following question given this paragraph: Mistakes may occur during meiosis that result in nondisjunction . This is the failure of replicated chromosomes to separate during meiosis (the animation at the link below shows how this happens). Some of the resulting gametes will be missing a chromosome, while others will have an extra copy of the chromosome. If such gametes are fertilized and form zygotes, they usually do not survive. If they do survive, the individuals are likely to have serious genetic disorders. Table below lists several genetic disorders that are caused by abnormal numbers of chromosomes. Most chromosomal disorders involve the X chromosome. Look back at the X and Y chromosomes and you will see why. The X and Y chromosomes are very different in size, so nondisjunction of the sex chromosomes occurs relatively often. http://learn. genetics. utah. edu/content/begin/traits/predictdisorder/index. html. Q: What is the failure of replicated chromosomes during meiosis to separate known as? Choices: - pollenation - regression - separation - nondisjunction A:
nondisjunction