Q: Q: Furthermore, most of the proteins within membranes have both hydrophobic and which other regions? Read this paragraph and choose the correct option from the provided answers: Choices: - atmospheric - lymphatic - cytosolic - hydrophilic A:
A: hydrophilic

Q: Q: Which class of acids acetic acid (ch 3 cooh) belongs to? Read this paragraph and choose the correct option from the provided answers: Not all hydrogen atoms in molecular compounds are ionizable. In methane (CH 4 ), the hydrogen atoms are covalently bonded to carbon in bonds that are only slightly polar. The hydrogen atoms are not capable of ionizing and methane has no acidic properties. Acetic acid (CH 3 COOH) belongs to a class of acids called organic acids. There are four hydrogen atoms in the molecule, but only the one hydrogen that is bonded to an oxygen atom is ionizable. Choices: - anorganic acids - strong acids - common acids - organic acids A:
A: organic acids

Q: Q: What is the skin of most reptiles covered with? Read this paragraph and choose the correct option from the provided answers: Reptiles have several adaptations for living on dry land that amphibians lack. For example, as shown in Figure below , the skin of most reptiles is covered with scales. The scales are made of very tough keratin, and they protect reptiles from injury, and also prevent them from losing water. Choices: - pores - cuticle - hairs - scales A:
A: scales

Q: Q: What do contour lines that are close together indicate? Read this paragraph and choose the correct option from the provided answers: 1. The spacing of contour lines shows the slope of the land . Contour lines that are close together indicate a steep slope. This is because the elevation changes quickly in a small area. Contour lines that seem to touch indicate a very steep slope, like a cliff. When contour lines are spaced far apart, the slope is gentle. So contour lines help us see the three-dimensional shape of the land. Choices: - deep slope - close slope - flat slope - steep slope A:
A: steep slope