Q: The barrier defenses are not a response to infections, but they are continuously working to protect against a broad range of what? Read this paragraph and choose the correct option from the provided answers: environment of the body's soft tissues. Barrier defenses are part of the body's most basic defense mechanisms. The barrier defenses are not a response to infections, but they are continuously working to protect against a broad range of pathogens. The different modes of barrier defenses are associated with the external surfaces of the body, where pathogens may try to enter (Table 21.2). The primary barrier to the entrance of microorganisms into the body is the skin. Not only is the skin covered with a layer of dead, keratinized epithelium that is too dry for bacteria in which to grow, but as these cells are continuously sloughed off from the skin, they carry bacteria and other pathogens with them. Additionally, sweat and other skin secretions may lower pH, contain toxic lipids, and physically wash microbes away. Choices: - mates - nutrients - ecosystems - pathogens A:
pathogens

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Q: Which system refers to the skin and its accessory structures? Read this paragraph and choose the correct option from the provided answers: What do you think when you look at your skin in the mirror? Do you think about covering it with makeup, adding a tattoo, or maybe a body piercing? Or do you think about the fact that the skin belongs to one of the body's most essential and dynamic systems: the integumentary system? The integumentary system refers to the skin and its accessory structures, and it is responsible for much more than simply lending to your outward appearance. In the adult human body, the skin makes up about 16 percent of body weight and covers an area of 1.5 to 2 m2. In fact, the skin and accessory structures are the largest organ system in the human body. As such, the skin protects your inner organs and it is in need of daily care and protection to maintain its health. This chapter will introduce the structure and functions of the integumentary system, as well as some of the diseases, disorders, and injuries that can affect this system. Choices: - digestive system - malpighian system - tomoxia system - integumentary system A:
(Answer)
integumentary system

Ques: Q: What type of hybridization does ammonia undergo? Read this paragraph and choose the correct option from the provided answers: The methane and ammonia examples illustrate the connection between orbital hybridization and the VSEPR model. The electron domain geometry predicted by VSEPR leads directly to the type of hybrid orbitals that must be formed to accommodate that geometry. Both methane and ammonia have tetrahedral electron domain geometries and thus both undergo sp 3 hybridization. Choices: - h2O hybridization - ionic hybridization - nh3 hybridization - sp 3 hybridization A:
Ans: sp 3 hybridization

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Q: On the origin of species is a book by darwin that spells out what theory? Read this paragraph and choose the correct option from the provided answers: Wallace's paper on evolution confirmed Darwin's ideas. It also pushed him to publish his book, On the Origin of Species. The book clearly spells out his theory. It also provides evidence and logic to support it. Choices: - theory of reproduction - theory of the universe - theory of the computation - theory of evolution A:
(A).
theory of evolution

Ques:Q: What system carries nerve impulses to internal organs, controlling activities that are not under your control, such as sweating and digesting food? Read this paragraph and choose the correct option from the provided answers: The autonomic nervous system carries nerve impulses to internal organs. It controls activities that are not under your control, such as sweating and digesting food. The autonomic nervous system has two parts:. Choices: - limbic nervous system - circulatory nervous system - hormonal nervous system - autonomic nervous system A:

Ans:autonomic nervous system

Q: The properties of cyclic hydrocarbons are generally quite similar to those of the corresponding open-chain compounds. so cycloalkanes (with the exception of cyclopropane, which has a highly strained ring) act very much like noncyclic alkanes. cyclic structures containing five or six carbon atoms, such as cyclopentane and cyclohexane, are particularly what? Read this paragraph and choose the correct option from the provided answers: The properties of cyclic hydrocarbons are generally quite similar to those of the corresponding open-chain compounds. So cycloalkanes (with the exception of cyclopropane, which has a highly strained ring) act very much like noncyclic alkanes. Cyclic structures containing five or six carbon atoms, such as cyclopentane and cyclohexane, are particularly stable. We will see in Chapter 16 "Carbohydrates" that some carbohydrates (sugars) form five- or six-membered rings in solution. Choices: - large - reactive - small - stable A:
stable