17. The fluid aspect of the fluid-mosalc mebrane A. Transport of soluble mater B
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17. The fluid aspect of the fluid-mosalc mebrane A. Transport of soluble mater B. water in the membrane C. Lateral ie model of the plasma membrane applies to the across the eral movement of lIipids and proteins within the 0. Movement of lipid-soluble materials through the bilayer E. Shape of the membrane 18. From its atomie number of 15, one can state that the phosphorus atom has: A 15 protons and therefore 15 electrons B. 15 protons and therefore 15 neutrons C, 15 neutrons D. 15 protons E. Any combination of protons and electrons that totals 15 der of the layers of the epidermis from Which of the following represents the correct on the deepest to the most superficial? A. Stratum lucidum, stratum granulosum, stratum corneum,stratum basale, and 19. stratum spinosum B. Stra tum basale, stratum spinosum, stratum granulosum, stratum lucldum, and Stratum spinosum, stratum basale, stratum lucidum, stratum corneum, and stratum granulosum stratum corneum C. D. Stratum basale, stratum granulosum, stratum lucidum, stratum spinosum, and Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale stratum corneum E. 20. A symporter will transportacross the cell membrane A. Two different ions or molecules in opposite directions B. Two different ions or molecules in the same directions C. Two of the same ions or molecules in the same direction D. One specific ion or molecule E. Two of the same ions or molecules in opposite directionsExplanation / Answer
17. c) lateral movement of lipids and proteins through the bilayer.
The fluidity is achieved because the individual phospholipid molecules are not bonded to each other, so the movement of lipids and proteins is possible through the bilayer.
18. a) 15 protons and therefore 15 electrons.
Atomic number refers to the number of protons in the atom, and number of electrons is Same as the number of protons due to charge neutrality.
19. b) stratum basale, stratum spinosum, stratum granulosum, stratum lucidum and stratum corneum.
20. b) two different ions or molecules in the same direction.
A symporter is an integral membrane protein. It is called symporter because it transports different molecules in the same direction across the cell membrane.
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