Answer the following question given this paragraph: In the lungs, air is diverted into smaller and smaller passages, or bronchi. Air enters the lungs through the two primary (main) bronchi (singular: bronchus). Each bronchus divides into secondary bronchi, then into tertiary bronchi, which in turn divide, creating smaller and smaller diameter bronchioles as they split and spread through the lung. Like the trachea, the bronchi are made of cartilage and smooth muscle. At the bronchioles, the cartilage is replaced with elastic fibers. Bronchi are innervated by nerves of both the parasympathetic and sympathetic nervous systems that control muscle contraction (parasympathetic) or relaxation (sympathetic) in the bronchi and bronchioles, depending on the nervous system's cues. In humans, bronchioles with a diameter smaller than 0.5 mm are the respiratory bronchioles. They lack cartilage and therefore rely on inhaled air to support their shape. As the passageways decrease in diameter, the relative amount of smooth muscle increases. The terminal bronchioles subdivide into microscopic branches called respiratory bronchioles. The respiratory bronchioles subdivide into several alveolar ducts. Numerous alveoli and alveolar sacs surround the alveolar ducts. The alveolar sacs resemble bunches of grapes tethered to the end of the bronchioles (Figure 39.10). In the acinar region, the alveolar ducts. Q: In the lungs, air is diverted into smaller and smaller passages called what? Choices: - ion channels - alveoli - ectoderm - bronchi A:
bronchi
(Question)
Answer the following question given this paragraph: Hydroxides Hydroxides are compounds that contain the OH ion. It is possible to prepare these compounds by two general types of reactions. Soluble metal hydroxides can be produced by the reaction of the metal or metal oxide with water. Q: What is produced by the reaction of metal oxide with water? Choices: - heat energy - rust - hydrogen gas - soluble metal hydroxides A:
(Answer)
soluble metal hydroxides
Ques: Answer the following question given this paragraph: Transition-metal fluorides usually have higher oxidation states than their iodides. For a given metal, the lowest-oxidation-state oxide is basic and the highest-oxidation-state oxide is acidic. Halides of the transition metals become more covalent with increasing oxidation state and are more prone to hydrolysis. Propose a method to prepare each of the following compounds: TiCl 4[(CH3)2O]2, Na2TiO3, V2O5, and Na2Cr2O7. Of the group 5 elements, which. Q: Halides of the transition metals become more covalent with increasing oxidation state and are more prone to what? Choices: - comproportionation - cycloaddition - decarbonylation - hydrolysis A:
Ans: hydrolysis
(Q).
Answer the following question given this paragraph: Kidney stones are mineral crystals that form in urine inside the kidney. They may be extremely painful. If they block a ureter, they must be removed so urine can leave the kidney and be excreted. Q: What kind of health problem can occur in the kidney and potentially cause problems with urination? Choices: - infection - diabetes - gallstones - kidney stones A:
(A).
kidney stones
Ques:Answer the following question given this paragraph: A voltaic cell uses a spontaneous redox reaction to generate an electric current. It is also possible to do the opposite. When an external source of direct current is applied to an electrochemical cell, a reaction that is normally nonspontaneous can be made to proceed. Electrolysis is the process in which electrical energy is used to cause a nonspontaneous chemical reaction to occur. Electrolysis is responsible for the appearance of many everyday objects such as gold-plated or silver-plated jewelry and chrome-plated car bumpers. Q: A voltaic cell uses what type of reaction to generate an electric current Choices: - spontaneous catalyst - chemical reaction - instantaneous redox - spontaneous redox A:

Ans:spontaneous redox
Ques: Answer the following question given this paragraph: Monotremes reproduce by laying eggs. They have a cloaca instead of a uterus and vagina. The eggs pass through the opening of the cloaca. This form of reproduction is the least risky for the mother. However, eggs are harder to protect than is an embryo or a fetus in a pouch or uterus. Therefore, monotreme offspring may have a lower chance of surviving than the offspring of therian mammals. Q: How do basal mammals like monotreme reproduce? Choices: - cloning - budding - live birth - by laying eggs A:
Ans:
by laying eggs