Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 12, Problem 1Q
Based on what you learned in this chapter about the pathway from production of a protein to its secretion, would TIRF be useful if you wanted to trace this entire pathway using a light microscope? Why or why not?
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(a) If you were to magnify a cell 10,000-fold (typical of the magnification achievedusing an electron microscope), how big would it appear? Assume you are viewing a“typical” eukaryotic cell with a cellular diameter of 50 μm.(b) If this cell were a muscle cell (myocyte), how many molecules of actin could ithold? Assume the cell is spherical and no other cellular components are present; actinmolecules are spherical, with a diameter of 3.6 nm. (c) If this were a liver cell (hepatocyte) of the same dimensions, how manymitochondria could it hold? Assume the cell is spherical; no other cellular components arepresent; and the mitochondria are spherical, with a diameter of 1.5 μm
Please help me with this question. More than one answer may be correct.
The cis golgi compartment ______.
Options:
A)
is a convenient place to store tools in small cars.
B)
uses clathrin as a coating protein to send vesicles to the medial compartments.
C)
sends proteins to their proper destination.
D)
is continuous with the trans compartment.
E)
adds specific signal to proteins destine for the lysosomes.
What is an analogy for a smooth endoplasmic reticulum?
Chapter 12 Solutions
Becker's World of the Cell (9th Edition)
Ch. 12 - How do differences in the structure and...Ch. 12 - Why is it necessary for material flowing through...Ch. 12 - What problems would you likely see in cells...Ch. 12 - What features of membrane lipids and proteins...Ch. 12 - Based on what you learned in this chapter about...Ch. 12 - How would an inhibitor of membrane fusion...Ch. 12 - What intracellular transport processes would you...Ch. 12 - What problems would a cell have if it could not...Ch. 12 - Although the plant vacuole resembles the lysosome...Ch. 12 - Why is it important for the biochemical reactions...
Ch. 12 - Compartmentalization of Function. Each of the...Ch. 12 - Endoplasmic Reticulum. For each of the following...Ch. 12 - Biosynthesis of Integral Membrane Proteins. In...Ch. 12 - Coated Vesicles in Intracellular Transport. For...Ch. 12 - QUANTITATIVE Interpreting Data. Each of the...Ch. 12 - Cellular Digestion. For each of the following...Ch. 12 - QUANTITATIVE Virus Entry by Endocytosis....Ch. 12 - Prob. 12.8PSCh. 12 - Sorting Proteins. Specific structural features tag...Ch. 12 - Prob. 12.10PSCh. 12 - Whats Happening? Researchers have discovered a...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which electron or light microscopy technique would you use for the following? (also explain) For visualizing the fine structure of cellular organelles and cell architecture in the cell interior using very thin cross-sections made in Epon. To obtain sequential images of a macromolecule in order to study its activity in real-time. To obtain an extremely clear three-dimensional image of the nucleus of a single cell. What is the magnification of the image in a microscope using a 20x ocular and a 100x objective?arrow_forwardWhile performing fluorescent microscopy to observe the transport of bulk molecules into a cell a researcher uses a green, fluorescent bulk protein and a red fluorescent dye to stain the cell membrane. If the cell has the ability to transport the bulk proteins into the cell, what would we expect to see in the microscope when the images are merged? What would we expect to see if the cell did not have the ability to transport the bulk protein?arrow_forwardplease choose correct letter and explain a bit 1. The strongest way by which a protein can maintain its shape is by using:a) ionic bonds b) disulfide bonds c) star war forces d) van der Waals forces 2. If a cell (like an amoeba) would be capable of migrating from one place to another only with movement created from the inside of the cell, then we can say that that movement is done mainly by: a) glycoproteins b) feet c) microtubules d) actin filaments True or False: In eukaryotic cells (such as human cells), the variety and diversity of proteins is much less than the variety and diversity of lipids.arrow_forward
- Someone has left a tube of unlabeled (poor lab practice) cells on your lab bench. Using differential staining, how would you determine if the cells were from E. coli, beans, or ants? Your hypothesis is that cells are from ants. What stain would you use to differentiate between E. coli and ant cells? Explain and include your expected results.arrow_forwardEosin (an acidic dye, negatively charged) is used to stain cytoplasm (basic, negatively charged), and at the same time, Methylene blue (a basic dye, positively charged) can also be used to stain cytoplasm (basic, negatively charged). Why both acidic and basic dye can be used to stain cytoplasm? Why the negative charged Eosin can also bind to negative charged cytoplasm without repulsion?arrow_forwardThe properties of integral membrane proteins can be studied by 1)Atomic force microscopy 2)Cryo-sectioning and electron microscopy 3)Freeze-fracture technique and electron microscopy 4)All of the abovearrow_forward
- Answer the Guide Question: a) Each cell in an organism has all of the basic parts. Each has a function that benefits the other cells, how might the presence of different cell structures in plant and animal help them perform their functions as an organism. Explain. b) Why is the cell membrane considered as the guard of the cell? c) Why is the lysosome considered as the suicide bag of the cell?arrow_forwardMatch the following structures with their definitions: (1) Golgi apparatus (2) mitochondria (3) peroxisomes (4) cilia (5) endoplasmic reticulum (6) cytoskeleton (7) vesicles (8) ribosomes A. sacs that contain enzymes thatcatalyze a variety of specific biochemical reactionsB. structures on which protein synthesis occursC. structures that house the reactions that release energy from nutrientsD. a network of microfilaments and microtubules that supports and shapes a cellE. a structure that adds sugars to certain proteins and processes them for secretionF. membrane-bounded sacsG. a network of membranous channels and sacs where lipids and proteinsare synthesizedH. hairlike structures that extend from certain cell surfaces and wave about.arrow_forwardA fluorescent molecule of 2000 daltons is microinjected into a single cell of an epithelial layer. When the layer is examined in a fluorescence microscope, the molecule remains confined to that cell. However, when a fluorescent molecule of 800 daltons is injected into a single cell of an epithelial layer, it quickly appears in the adjacent cells. Which of the following is responsible for the spread of the smaller molecule? 1. A) Desmosomes (maculae adherentes) 2. B) Focal contacts 3. C) Gap junctions 4. D) Intermediate junctions 5. E) Tight junctions (zonulae occludentes)arrow_forward
- Using the the enzyme acid hydrolase in the lysosome: What is the final destination in which the protein will function? Which features will the protein receive during its manufacture? What is the primary structure (general)? Where is the primary structure made? Where are the secondary and tertiary structures made? Will the protein travel through any organelles during its manufacture? Which ones? What would be the overall result if some part of the manufacture process went wrong, such that the protein ended up as nonfunctional?arrow_forwardList and describe the three main types of cytoskeleton. If you wanted to do immunocytochemistry to specifically stain each type of cytoskeleton, what is a protein that could be used for each cytoskeletal type (in other words, what is a unique protein for each cytoskeletal type)? What are three types of actin structures? Describe the involvement of actin structures in cell migration. How is the growth and shrinking of microtubules regulated? Then describe the roles of microtubules in: chromosomal separation during mitosis and the movement of organelles and vesicles within a cell. Describe a possible mechanism on how signaling pathways might impact the cytoskeleton, so that cell migration could be regulated in a localized manner within a multicellular organism. (hint: think about the possible transcriptional regulation of the G-protein regulators) What are 2 main challenges of protein targeting? Then describe one way these challenges are overcome during signal-based targeting and one way…arrow_forwardWhat is endomembrane system? Please name all 5 ways to study endomembrane system and explain any one of them in detailarrow_forward
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