1. Which of the following groupings describes the four principal components of the plasma membrane? a. Phospholipid bilayer, ribosomes, glycocalyx, proteins b. Phospholipid bilayer, proteins, cholesterol, glycocalyx C Phospholipid bilayer, DNA, proteins, cholesterol d. Phospholipid bilayer, proteins, DNA, ribosomes

1. Which of the following groupings describes the four principal components of the plasma membrane? a. Phospholipid bilayer, ribosomes, glycocalyx, proteins b. Phospholipid bilayer, proteins, cholesterol, glycocalyx C Phospholipid bilayer, DNA, proteins, cholesterol d. Phospholipid bilayer, proteins, DNA, ribosomes

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter3: Cell Structure And Function

Section: Chapter Questions

Problem 11RQ: The tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a....

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Which plasma membrane component can be either found on its surface or embedded in the membrane structure? a. protein b. cholesterol c. carbohydrate d. phospholipid
1. Which of the following BEST describes the composition of the plasma membrane? a.Double layer of phospholipids, protein, carbohydrate and some cholesterol b.Lipoproteins in which triglycerides are a major component c.Cholesterol, proteins, and a small but significant amount of lipids d.A lipid bilayer formed mainly from cholesterol with protein attached to both sides 2.Which of the following is TRUE about the movement of water across membranes? a.Water migrates to an area of low salt concentration. b.Water migrates to an area with high lipid content c.Water migrates to an area with high salt concentration. d.Water migrates into and out of the cell at equal rates. 3. Which of the following molecules/ material can freely pass through the cell membrane's phospholipids? a.carbon dioxide b.lipids c.oxygen molecule
1. When considering tight junctions, adherens junctions, and desmosomes: a. Which ones do not help in resisting mechanical stress and holding cell shape? Why not? b. Considering how the mechanical junctions are placed in the plasma membrane, why don’t they provide a truly sealed barrier?
Of the following organelles associated with the endomembrane system, which group is primarily imvolved in synthesizing molecules needed by the cell:? Select one or more a. Smooth endoplasmic reticulum, ribosome vacuole b. Ribosome, rough endoplasmic reticulum, smooth endoplasmic reticulum c Rough endoplasmic reticulum, lysosoroe, vacuole d. Vacuole, rough endoplasmic reticulum, smooth endoplasmic reticulum e Lysosome, vacuole, ribosome DOOO
1. Which of the following organelles possesses a single membrane with a bilayer of phospholipids and uses oxygen to degrade both fatty acids and toxic intracellular compounds? A. Peroxisome B. Mitochondria C. Lysosome D. Rough endoplasmic reticulum E. Golgi apparatus
1.Which component of the plasma membrane allows the immune system to differentiate between body cells and foreign cells or tissues? a.integral proteins b.carbohydrates c.cholesterol d.peripheral proteins e.phospholipids 2.Cyanide is a chemical that affects the function of mitochondria affecting the energy processing of cell. What will happen to a cell if it was exposed to an isotonic solution of cyanide? a.the cell will die b.remain the same c.mitochondria will shrink d.mitochondria will swell
1. Organlles work together to sustain the overall function of the cell and maintain homeostasis (state of balance). Predict what would happen if one of the organelles was removed. How would that affect the survival and efficienct of the cell? 2. Which organelles are parts of the endomembrane system. The organelles are: Chloroplast Mitochondria Lysosome Endoplasmic Reticulum Golgi Bodies Ribosomes Cell Wall Vacuole Microtubule
13. The process of "cell drinking" is called: a. phagocytosis b. exocytosis c. pinocytosis d. digestion 14. The fibers and proteoglycans that form the Extracellular Matrix (ECM) connect with: a. vesicles formed by the plasma membrane b. integral proteins of the plasma membrane and the cytoskeleton c. integral proteins and phospholipid of the plasma membrane d. directly to the cytoskeleton of the cell 15. Which of the following is a passive process? a. exocytosis b. osmosis c. active transport d. phagocytosis 16. Which of the following will move easily through the plasma membrane of the cell? a. protein b. starch c. glycogen d. oxygen
1. Differentiate between prokaryotic and eukaryotic cells? 2. In your view, which cellular organelle is most important and why? 3. Why does a cell need a cell membrane? 4. What is the importance of three types of cytoskeletons a cell? 5. What are different types of cell junctions? What is their role?
In the plasma membrane, form(s) the lipid bilayer,determine(s) the fluid nature of the membrane, andmainly determine(s) the function of the membrane.a. phospholipids, cholesterol, proteinsb. phospholipids, proteins, cholesterolc. proteins, cholesterol, phospholipidsd. cholesterol, phospholipids, proteinse. cholesterol, proteins, phospholipids
Which of the following is NOT a component of the cell plasma membrane? A. cholesterol B. proteins C. microfi laments D. phospholipids
1. Match the cell structures in column A with their functions in column B. Column A 1. 2. 3. 4. 5. Centrioles Chromatin Cytoplasm Cytoskeleton Rough Endoplasmic Reticulum (ER) 6. 7. 8. 9. 10. 11. Peroxisomes 12. Plasma membrane Golgi apparatus Lysosomes Mitochondria Nucleolus Nucleus 13. Ribosomes Column B a. a selectively permeable barrier between the cell's intracellular and extracellular environments b. includes cellular organelles and cytosol c. contains the cell's genetic material (DNA) d. synthesizes rRNA and assembles ribosomes in the nucleus e. genetic material within the nucleus; consists of uncoiled chromosomes and associated proteins f. synthesizes new proteins destined for the plasma membrane, lysosomes, or secretion from the cell g. sites of protein synthesis; may be bound to the ER ("bound") or found within the cytoplasm ("free") h. a stack of flattened membranes that are the site where proteins from the ER are modified, packaged, and sorted for delivery to other…