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Date Name Biology Review Packet: Cell Transport | . The fluid-mosaic model of the cell membrane if .Which diagram best represents the fluid-mosaic suggests that the membrane is primarily composed model of a cell membrane? of (A) outside surface (A) proteins and starches (B) carbohydrates and lipids protein molecules (C) sugars and proteins (D) proteins and lipids ^ .Which cell structure is represented by the threeinside surface dimensional diagram below? (B) outside carbohydrate surface lipid molecules inside surface Protein molecules molecules outside surface (C) lipid protein molecules molecules (A) chloroplast (B) mitochondrion (C) plasma membrane inside surface (D) replicated chromosome 2> .The diagram below represents a section of a (D) outside , protein surface plasma membrane. lipid molecules inside surface What does structure X represent? (A) a protein {C) a lipid (B) glucose (D) glycogen 5" The diagram below shows the same type of molecules in area A and area B. With the passage of time, some molecules move from area A to area B. ~7 Human red blood cells placed in a 2 % salt solution appear to shrink, but those placed in a 0.4 % salt solution burst. Which statement best supports these observations? (A) Salt causes cell walls to swell. (B) Salt is actively transported across cell Molecules membranes. (C) The nucleus does not regulate water balance in a cell. (D) Osmosi6 may occur in either direction across the cell membrane. Q .Which statement best explains why gas transport takes place as represented in the diagram below? Selectively Permeable Membrane This movement is the result of the process of (A) phagocytosis (C) diffusion (B) pinocytosis (D) cyclosis CO. CO5 .Which process accomplishes the movement of gases illustrated by the arrows in the diagram below? (A) The carbon dioxide concentration is greater in the cells than in the environment. (B) The carbon dioxide is absorbed into the environment by active transport. (C) The carbon dioxide concentration in the cells is equal to that in the environment. (D) The carbon dioxide is transported to the (A) transpiration (C) phagocytosis (B) diffusion (D) osmosis environment by a transport system. . Which process would include a net movement of sugar molecules through a membrane from a region of lower concentration to a region of higher concentration? (A) osmosis (C) active transport (B) cyclosis (D) passive transport \Q. A red blood cell placed in distilled water will swell and burst due to the diffusion of (A) salt from the red blood cell into the water (B) water into the red blood cell (C) water from the blood cell into its environment (D) salt from the water into the red blood cell 11 . Red blood cells contain a higher concentration of potassium than the surrounding blood plasma does. This higher concentration is maintained by the process of (A) cyclosis (C) simple diffusion (B) osmosis (D) active transport /2 - Since cyanide is a poison that limits a cell's ability to manufacture ATP, a cell containing cyanide is least likely to carry on the process of (A) passive transport (C) active transport (B) osmosis (D) diffusion /3 -The process of osmosis would explain the net movement of water into a cell if the percentage of (A) water was 90% inside the cell and 95% outside the cell (B) protein was 30% inside the cell and 35% outside the cell (C) water was 95% inside the cell and 90% outside the cell (D) water and protein was equal inside and outside the cell \H .In a cell, the selective permeability of the cell membrane is most closely associated with the maintenance of (A) homcostasis (C) phagocytosis (IB) hydrolysis (D) pinocytosis IS Which substances may pass through a cell membrane by simple diffusion? (A) starch and protein (B) protein and fat (C) carbon dioxide and water (D) carbon dioxide and starch \\q .Molecules A and B come in contact with the cell membrane of the same cell. Molecule A passes Ihrough the membrane readily, but molecule B does not. Which statement could describe molecules A and 5? (A) Molecule A is a protein, and molecule B is a fat. (B) Molecule A is a starch, and molecule B is a simple sugar. (C) Molecule A is an amino acid, and molecule B is a simple sugar. (D) Molecule A is a simple sugar, and molecule B is a starch. f7 .Which structure is most directly responsible for maintaining homeostasis in all cells? (A) chloroplast (C) centriole (B) cell membrane (D) cell wall ( Q The diagram below represents the fluid-mosaic .A student observed a wet mount of some stained plant cells in the high-power field of a model of a cell membrane. compound light microscope. Diagram A represents the general appearance of these cells. The student then added several drops of a liquid to the wet mount and continued the observations. Diagram B represents the general appearance of the cells a few minutes after adding the liquid. The arrow points to a component of the membrane B that is best described as a (A) sugar floating in lipids (B) protein floating in lipids The liquid that the student added to the wet mount (C) lipid floating in proteins was most likely (D) lipid floating in sugars jQ .Which statement regarding the functioning of the cell membrane of all organisms is not correct? j (A) The cell membrane forms a boundary that ! ; (B) The cell membrane is capable of receiving and i recognizing chemical signals. (C) The cell membrane forms a barrier that keeps ■ ; all substances that might harm the cell from i entering the cell. \ (D) The cell membrane controls the movement of molecules into and out of the cell. (C) pond water (B) distilled water (D) tap water J | .Which process requires cellular energy? separates the cellular contents from the outside j environment. (A) salt water (A) diffusion (C) active transport (B) passive transport (D) osmosis