APBIO Semester Test
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| Which of the following statements describes a feature shared by mitochondria and the endoplasmic reticulum that increases the efficiency of their basic functions? | They have highly folded membranes.
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| Which of the following best describes a process that occurs within the Golgi complex? | Enzymatic modification of newly synthesized integral membrane proteins.
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| Which of the following function differences between the rough and smooth endoplasmic reticulum (ER) is explained by the structural differences between them? | Rough ER can synthesize and package protiens for export, and smooth ER cannot.
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| Based on the model the newly synthesized proteins is transported directly form the endoplasmic reticulum to which of the following? | The Golgi complex
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| Which of the following is a scientific claim about how the structure of the mitochondria in muscle cells should be different than it is in other cells because of high energy demands of mitochondira? | The inner membrane of the mitochondria in muscle cells should have more folds to increase the surface area, allowing more ATP to be synthesized.
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| Which of the following accurately describes a model of active transport? | A membrane protein binds a specific molecule outside of the cell and moves the molecule into the cell where there is already a high concentration of the molecule compared with the outside.
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| Which of the following best explains how the extensive folding of the inner mitochondrial membrane benefits a eukaryotic cell? | It increases the area available for protiens involved in energy transfer.
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| Which of the following claims a scientifically accurate and consistent with an observation that a decrease in lysosome production wihtin a cell leads to a decline in mitochondrial acitivity? | Fewer lysosomes will be avaliable to break down macromolecule to provide the necessary nutrients for cellular repiration.
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| Which of the following outcomes will most likely result from a loss of ion pump function in the cell's lysosome? | The internal pH of the lysosomes will increase, which will prevent the activation of hydrolytic enzymes and interfere with the intracellular digestion of food.
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| Water enters and leaves the plant cells primarily by... | osmosis
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| which of the following best describes the numbered aeras? | Area 1 and 3 are polar, since the membrane molecules are aligned with water molecules.
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| which statement best explains the orientation of the phospholipid molecules in this model | the hydrophilic phosphate groups of the phospholipid molecules are attracted to the aqueous internal and external environments
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| which of the following describes the most likely between transpiration and what intake in the plant | transpiration from the leaves of the plant stimulates subsequent water intake by the roots of the plants
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| if ATP breakdown (hydrolysis) in inhibited, which of the following types of movement across cell membranes is also inhibited? | passage of a solute against its concentration gradients
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| Which of the following data would support the alternative hypothesis? | cell with mutated aquaporins exhibit moderate turgor pressure and are hypertonic.
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| which statement best describes the effect on water transport across the cell membrane if the aquaporins in the figure ceases to function | water moelcules will still be able to move across the cell membrane but at a slower rate
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| which investigator will help determine whether the new membrane protein is a channel protein involved in membrane transport. | add more of the proteins to the plasma membrane and mearire the rate of particle movement
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| whihc of the following componenets of the cell memrbane is responsible for active transport | protein
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| Which of the following, if true about the drug, best supports the alternative hypothesis that the new drug will exhibit simple diffusion across plasma membranes? | The drug is a small nonpolar molecule.
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| Which of the following statements is true regarding the movement of substances across cell membranes? | Ions are unable to move through the phospholipid bilayer because the nonpolar tail regions of the
phospholipids are hydrophobic.
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Created by:
josey edwards