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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?
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Which of the following best describes a process that occurs within the Golgi complex?
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APBio - Unit 2
| Question | Answer |
|---|---|
| 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 |
| Which of the following best describes a process that occurs within the Golgi complex? | Enzymatic modification of newly synthesized integral membrane proteins |
| Which of the following functional differences between the rough and smooth endoplasmic reticulum (ER) is explained by the structural differences between them? | Rough ER can synthesized and package lipids for export and smooth ER cannot |
| Based on the model, the newly synthesized protein is transported directly from the endoplasmic reticulum to which of the following? | The Golgi complex |
| 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 mitochondria? | The inner membrane of the mitochondria in muscle cells should how more folds to increase the surface area, allowing more ATP to be synthesized. |
| 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. |
| Which of the folllowing best explains how the extensive folding of the inner mitochondria membrane benefits a eukaryotic cell? | It increases the area available for proteins involved in energy transfer. |
| Which of the following claims is scientifically accurate and consisent with an observation that a decreases in lysosome production within a cell leads to a decline in mitochondria activity? | Fewer lysosomes will be avaible to break down macromolecules to provide the necessary nutrients for cellular respiration. |
| Which of the following outcomes will most likely result from a loss of ion pump function in the cell's lysosomes? | The internal pH of the lysosomes will increase, which will prevent the activation of hydrolytic enzymes and interfere with the intracellular digeston of food. |
| Water enters and leaves the plant cells primarily by.. | Osmosis |
| Which of the following best describes the numbered areas? | Areas 1 and 3 are polar, since the membrane molecules are aligned with water molecules. |
| 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 environment. |
| To model a plant cell, a permable, nonflexible case is placed around each piece of dialysis tubing. the greatest pressure potenial will develop within dialysis tube number. | 4 |
| Which statement best explains why correct protein folding is critical in the transmembrane protein shown above? | Interactions of the hydrophobic and hydrophilic amino acids help to anchor the protein in the membrane. |
| The approximate molarity of the solution in which the mass of the plant pieces would NOT change is.. | 0.3 M |
| Which of the following describes the most likely relationship between transpiration and water intake in the plant? | Transpiration from the leaves of the plant stimulates subsequent water intake by the roots of the plant. |
| If ATP breakdown (hydrolysis) is inhibited, which of the following types of movement across cell membrane is also inhibited? | Passage of a solute against its concentration gradient. |
| Which of the following data would support the alternative hypothesis? | Cells with mutated aquaporins exhibit turgor pressure and are hypertonic. |
| Which statement best describes the effect on water transport across the cell membrane if the aquaporin in the figure cesaes to finction? | Water molecules will still be able to move across the cell membrane but at a slower rate. |
| Which investigation 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 measure the rate of the particle movement |
| Which of the follwing components of the cell membrane is responsible for active transport? | Protein |
| Based on information. which of the follwing is the most likely explanation for a buildup of cholesterol molecules in the blood of an animal? | the animals body cells are defective in endocytosis |
| Which of the following observations would best support the alternative hypothesis described above? | In both plant cells and fungal cells, the cell wall surround the outside of the cell memrbane. |
| 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. |
| Which of the following statements is true regarding the movement of substances across the cell membrane? | Ion are unable to move through the phospholipid bilayer because the nonpolar tail regions of the phospholipid are hydrophobic |
| Which of the following is the correst explanation for the data? | The contraction rate increases as the osmolarity decreases because the amount of water entering the paramecia by osmosis increases |
| Prokaryotic and eukaryotic cells generally have which of the following features in common? | Ribosomes |
| Which of the following statements best explains the observations represented in Figure 1? | There was a net movement of water out of the cell suspended in the sugar solution and a net movement of water into the cell suspended in the distilled water. |
| Which additional investigation can be used to determine when the cells are in an isotonic solution? | Increasing the salinity of the enviroment a litte at a time until the ATP usage reaches a minimum. |
| which of the following best predicts the effct of not having ATP available to supply energy to this process? | H+ ions will stop moving throught the protein. |
| Based on the model presented in Figure 1, which of the following outcomes will most likely result form a loss of protein X function? | the membrane potential will be disrupted by an increase in K+ concentration inside the cell. |
| The organelle that is a major producer of ATP and is found both heterotrphs and autotrophs is the... | mitochondrion |
| Which of the following best explains how molecules such as O2 and CO2 can move across the membrane of a cell? | the majority of the cell membrane is nonpolar, whcich allows small, nonpolar molecules to freely across. |
| Which of the following statements best explains the processes of passive and active transport? | Passive transport is the net movement of substances down a concentration gradient that does not require metabolic energy. Active transport is the movement of substanes up a concentration gradient that requires energy. |
| Which of the following expirmental desgins will result in the fastest net rate of water movement in to chamber A? | placeing salt water in chamber A and distilled water in chamber B |
| Which of the following best summarizes an advantage of eukaryotic cells having internal membranes? | Organells isolate specific reactions, increasing metabolic efficiency. |
| Which of the following outcomes will most likely result from a change in the shape of the mitochondrial inner membrane from a highly folded surface to a smooth flat surface? | mitochondria will become less efficient because the surface area of the inner mitochondrial membranes will decrease. |
| The active transport pump used to move sodium ions across the membranes of gill cells in a freshwater fish has each of the following characteristics EXCEPT: | It uses osmosis to carry sodium ions into the cells. |
| If, instead of the bag, a potato slice were placed in a beaker of distilled water, whihc of the following would be true of the potato slice? | It would gain mass. |
| Which of the following scientific questions is most relevant to the model represented in the figure above? | Which molecular substance is actively transported across the plasma membrane? |
| Based on Table 1, which of the following best evaluates the students hypothesis? | The hypothesis is not supported because the mass of the grape increased in the grape juice. |
| Which of the following most directly explains the changes in the cells? | The movenment of water from the central vacuoles of the cells into the solution |
| Which of the following is most likely if an IV of distilled water is administered to a patient? | The cells that are exposed to hypotonic solution will expand as water moves osmotically into the cells from the blood. |
| Which of the following best predicts which daigrammed microscope view the laboratory worker would see and best explains why? | View 2 because the rate of water movenment into the RBC's equals the rate of water movenment out of the cells. |
| Which of the following best explains how the phospholipid bilayer of a transport vesicle contributes to cellular fuctions? | the phosphplipid bilayer allows the vesicle to fuse with the Golgi apparatis and the plasma membrane, allowing the exocytosis of proteins. |
| If ADH secretion is inhibited, which of the following would intitially result? | The person would produce greater amounts of dilute urine. |
| Which of the following best describes the role fo the structure labeled Y? | Structure Y is the location where proteins are synthesized |
Created by:
josey edwards