Answer the following question given this paragraph: Chadwick's work resulted in a new understanding of the nucleus of the atom; it is comprised of both protons and neutrons. Because the masses of subatomic particles are so small, a new unit, called an atomic mass unit (amu), was defined. Protons and neutrons each have a mass of approximately one amu. The Table below describes the characteristics of the three subatomic particles we have discussed. Q: Because the masses of subatomic particles are so small, a new unit, called what, was defined? Choices: - atomic volume unit - particle mass unit - nuclear mass unit - atomic mass unit A:
atomic mass unit
(Question)
Answer the following question given this paragraph: Like plants, algae contain chlorophyll and make food by photosynthesis. Q: How do plants and algae both make food? Choices: - atherosclerosis - spermatogenesis - Digestion. - photosynthesis A:
(Answer)
photosynthesis
Ques: Answer the following question given this paragraph: The frequency factor is used to convert concentrations to collisions per second. Equation 14.39 is known as the Arrhenius equation and summarizes the collision model of chemical kinetics, where T is the absolute temperature (in K) and R is the ideal gas constant [8.314 J/(Kmol)]. Ea indicates the sensitivity of the reaction to changes in temperature. The reaction rate with a large Ea increases rapidly with increasing temperature, whereas the reaction rate with a smaller Ea increases much more slowly with increasing temperature. If we know the reaction rate at various temperatures, we can use the Arrhenius equation to calculate the activation energy. Taking the natural logarithm of both sides ofEquation 14.39, Equation 14.40. Q: What is used to convert concentrations to collisions per second? Choices: - speeds factor - collision meter - particles factor - frequency factor A:
Ans: frequency factor
(Q).
Answer the following question given this paragraph: Veins are made primarily of xylem and phloem. They transport water and minerals to the cells of leaves and carry away dissolved sugar. Q: What are xylem and phloem responsible for transporting to the cells of leaves? Choices: - air and dirt - water and blood - light and gas - water and minerals A:
(A).
water and minerals
Ques:Answer the following question given this paragraph: Mutations , changes in the DNA or RNA sequence, can have significant phenotypic effects or they can have no effects. What are possible outcomes of some of those mutations. Some can produce genetic disorder . A genetic disorder is a condition caused by abnormalities, such as mutations, in your genes or chromosomes. Genetic disorders are usually present from conception. These disorders include chromosomal abnormalities, in which the individual has too few or too many chromosomes or chromosomes with large alterations, or diseases due to a mutation in a specific gene. These defective genes are usually inherited from the parents, hence the term hereditary disease or genetic disorder. Genetic disorders can be inherited in a dominant or recessive manner ( Figure below and Figure below ). Recessive disorders require the inheritance of a defective gene from each parent. The parents are usually unaffected and are healthy carriers of the defective gene. Q: What is the medical term for a condition caused by abnormalities, such as mutations, in your genes or chromosomes? Choices: - mutations disorder - nervous disorder - radiation disorder - genetic disorder A:

Ans:genetic disorder
Question: Answer the following question given this paragraph: Peroxisomes Like lysosomes, a peroxisome is a membrane-bound cellular organelle that contains mostly enzymes (Figure 3.17). Peroxisomes perform a couple of different functions, including lipid metabolism and chemical detoxification. In contrast to the digestive enzymes found in lysosomes, the enzymes within peroxisomes serve to transfer hydrogen atoms from various molecules to oxygen, producing hydrogen peroxide (H2O2). In this way, peroxisomes neutralize poisons such as alcohol. In order to appreciate the importance of peroxisomes, it is necessary to understand the concept of reactive oxygen species. Q: Peroxisomes perform a couple of different functions, including lipid metabolism and chemical detoxification. in contrast to the digestive enzymes found in lysosomes, the enzymes within peroxisomes serve to transfer hydrogen atoms from various molecules to oxygen, producing what? Choices: - calcium - water - hydrogen - hydrogen peroxide A:
Answer:
hydrogen peroxide