Answer the following question given this paragraph: An alkyl group is a group of atoms that results when one hydrogen atom is removed from an alkane. The group is named by replacing the -ane suffix of the parent hydrocarbon with -yl. For example, the CH3 group derived from methane (CH4) results from subtracting one hydrogen atom and is called a methyl group. The alkyl groups we will use most frequently are listed in Table 12.4 "Common Alkyl Groups". Alkyl groups are not independent molecules; they are parts of molecules that we consider as a unit to name compounds systematically. Table 12.4 Common Alkyl Groups. Q: A group of atoms that results when one hydrogen atom is removed from an alkane is referred to as what? Choices: - chloride group - hyrdrogen group - nitrate group - alkyl group A:
alkyl group
(Question)
Answer the following question given this paragraph: Earth is a sphere and so is a globe. A globe is the best way to make a map of the whole Earth. Because both the planet and a globe have curved surfaces, the sizes and shapes of countries are not distorted. Distances are true to scale. ( Figure below ). Q: A globe is the best way to make a map of what? Choices: - a continent - solar system - a city - whole earth A:
(Answer)
whole earth
Ques: Answer the following question given this paragraph: Butterfly fish like this one have "fake" eyespots. The eyespots may confuse larger predators long enough for the butterfly fish to escape. Q: Why do butterfly fish have fake eyespots? Choices: - aerodynamic purposes - mating purposes - random evolution - confuse predators A:
Ans: confuse predators
(Q).
Answer the following question given this paragraph: Refracting and reflecting telescopes are optical telescopes that use lenses to gather light. Q: Refracting and reflecting telescopes are optical telescopes that use lenses to gather what? Choices: - electricity - magnetic force - sound - light A:
(A).
light
Ques:Answer the following question given this paragraph: A wheel and axle is a simple machine that consists of two connected rings or cylinders, one inside the other, which both turn in the same direction around a single center point. When force is applied to the inner axle, the ideal mechanical advantage is less than 1. When force is applied to the outer wheel, the ideal mechanical advantage is greater than 1. Q: What simple machine consists of two connected rings or cylinders, one inside the other, which both turn in the same direction around a single center point? Choices: - pully - bloom and axle - spoke - wheel and axle A:

Ans:wheel and axle
Answer the following question given this paragraph: 20.3 | Capillary Exchange By the end of this section, you will be able to: Identify the primary mechanisms of capillary exchange Distinguish between capillary hydrostatic pressure and blood colloid osmotic pressure, explaining the contribution of each to net filtration pressure Compare filtration and reabsorption Explain the fate of fluid that is not reabsorbed from the tissues into the vascular capillaries The primary purpose of the cardiovascular system is to circulate gases, nutrients, wastes, and other substances to and from the cells of the body. Small molecules, such as gases, lipids, and lipid-soluble molecules, can diffuse directly through the membranes of the endothelial cells of the capillary wall. Glucose, amino acids, and ionsincluding sodium, potassium, calcium, and chlorideuse transporters to move through specific channels in the membrane by facilitated diffusion. Glucose, ions, and larger molecules may also leave the blood through intercellular clefts. Larger molecules can pass through the pores of fenestrated capillaries, and even large plasma proteins can pass through the great gaps in the sinusoids. Some large proteins in blood plasma can move into and out of the endothelial cells packaged within vesicles by endocytosis and exocytosis. Water moves by osmosis. Q: How do glucose, ions, and other larger molecules leave the blood? Choices: - through cell membranes - through capillary tips - through veinous fissures - through intercellular clefts A:
through intercellular clefts