Q: Q: The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents what? Read this paragraph and choose the correct option from the provided answers: Most prokaryotes have a peptidoglycan cell wall and many have a polysaccharide capsule (Figure 4.5). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces in its environment. Some prokaryotes have flagella, pili, or fimbriae. Flagella are used for locomotion. Pili are used to exchange genetic material during a type of reproduction called conjugation. Fimbriae are used by bacteria to attach to a host cell. Choices: - extinction - exhaustion - Respiration - dehydration A:
A: dehydration

Q: Q: A nephrologist studies and deals with diseases of what organ? Read this paragraph and choose the correct option from the provided answers: Nephrologist A nephrologist studies and deals with diseases of the kidneysboth those that cause kidney failure (such as diabetes) and the conditions that are produced by kidney disease (such as hypertension). Blood pressure, blood volume, and changes in electrolyte balance come under the purview of a nephrologist. Nephrologists usually work with other physicians who refer patients to them or consult with them about specific diagnoses and treatment plans. Patients are usually referred to a nephrologist for symptoms such as blood or protein in the urine, very high blood pressure, kidney stones, or renal failure. Nephrology is a subspecialty of internal medicine. To become a nephrologist, medical school is followed by additional training to become certified in internal medicine. An additional two or more years is spent specifically studying kidney disorders and their accompanying effects on the body. Choices: - lungs - brains - stomach - kidneys A:
A: kidneys

Q: Q: The volume of a regularly shaped solid can be calculated from its what? Read this paragraph and choose the correct option from the provided answers: The volume of a regularly shaped solid can be calculated from its dimensions. For example, the volume of a rectangular solid is the product of its length, width, and height. Choices: - layers - density - mass - dimensions A:
A: dimensions

Q: Q: Nuclei with even numbers of protons, neutrons, or both are more likely to be this? Read this paragraph and choose the correct option from the provided answers: The nuclei that are to the left or to the right of the band of stability are unstable and exhibit radioactivity. They change spontaneously (decay) into other nuclei that are either in, or closer to, the band of stability. These nuclear decay reactions convert one unstable isotope (or radioisotope) into another, more stable, isotope. We will discuss the nature and products of this radioactive decay in subsequent sections of this chapter. Several observations may be made regarding the relationship between the stability of a nucleus and its structure. Nuclei with even numbers of protons, neutrons, or both are more likely to be stable (see Table 21.1). Nuclei with. Choices: - ionic - solid - unstable - stable A:
A: stable