Answer the following question given this paragraph: Nucleic acids are biochemical compounds that include RNA (ribonucleic acid) and DNA (deoxyribonucleic acid). Nucleic acids consist of chains of small molecules called nucleotides. Nucleotides are the monomers of nucleic acids. A nucleotide is shown in Figure below . Q: What consist of chains of small molecules called nucleotides? Choices: - Atomic acids - structural acids - nitrous acids - nucleic acids A:
nucleic acids
Answer the following question given this paragraph: Components along the same axis, say the x-axis, are vectors along the same line and, thus, can be added to one another like ordinary numbers. The same is true for components along the y-axis. (For example, a 9-block eastward walk could be taken in two legs, the first 3 blocks east and the second 6 blocks east, for a total of 9, because they are along the same direction. ) So resolving vectors into components along common axes makes it easier to add them. Now that the components of R are known, its magnitude and direction can be found. Step 3. To get the magnitude. Q: Vectors along the same line can be what to one another like ordinary numbers? Choices: - noted - taken - lost - added A:
added
Q: Answer the following question given this paragraph: An acidic solution and a basic solution react together in a neutralization reaction that also forms a salt. Q: What is formed when an acidic solution and a basic solution react together in a neutralization reaction? Choices: - Sodium - seawater - shallow - salt A:
A: salt
Question: Answer the following question given this paragraph: Hydrogen and helium are the most abundant elements in the universe. Q: What are the two most abundant elements in the universe? Choices: - hydrogen and oxygen - nitrogen and carbon - oxygen and carbon - hydrogen and helium A:
Answer: hydrogen and helium
*Question*
Answer the following question given this paragraph: Two nuclei must collide for fusion to occur. High temperatures are required to give the nuclei enough kinetic energy to overcome the very strong repulsion resulting from their positive charges. A nuclear reactor consists of the following: 1. A nuclear fuel. A fissionable isotope must be present in large enough quantities to sustain a controlled chain reaction. The radioactive isotope is contained in tubes called fuel rods. A moderator. A moderator slows neutrons produced by nuclear reactions so that they can be absorbed by the fuel and cause additional nuclear reactions. A coolant. The coolant carries heat from the fission reaction to an external boiler and turbine where it is transformed into electricity. Q: What must two nuclei do for fusion to occur? Choices: - explode - melt - repel each other - collide A:
**Answer**
collide
*Question*
Answer the following question given this paragraph: Weeks 47 Respiratory development in the embryo begins around week 4. Ectodermal tissue from the anterior head region invaginates posteriorly to form olfactory pits, which fuse with endodermal tissue of the developing pharynx. An olfactory pit is one of a pair of structures that will enlarge to become the nasal cavity. At about this same time, the lung bud forms. The lung bud is a dome-shaped structure composed of tissue that bulges from the foregut. The foregut is endoderm just inferior to the pharyngeal pouches. The laryngotracheal bud is a structure that forms from the longitudinal extension of the lung bud as development progresses. The portion of this structure nearest the pharynx becomes the trachea, whereas the distal end becomes more bulbous, forming bronchial buds. A bronchial bud is one of a pair of structures that will eventually become the bronchi and all other lower respiratory structures (Figure 22.29). Q: Respiratory development in the embryo begins around week 4. ectodermal tissue from the anterior head region invaginates posteriorly to form olfactory pits, which fuse with endodermal tissue of the developing pharynx. an olfactory pit is one of a pair of structures that will enlarge to become this? Choices: - anal cavity - eye cavity - fluid cavity - nasal cavity A:
**Answer**
nasal cavity