Homework Answers
transport vesicles can move molecules between locations inside the cell, e.g., proteins from the rough endoplasmic reticulum to the Golgi apparatus. These transport vesicles are formed when part of the membrane pinches off the endoplasmic reticulum or the Golgi complex.
Vesicles are covered by special protein which decides its fate. These proteins are of three types-
clathrin - are found on vesicles trafficking between the Golgi and plasma membrane, the Golgi and endosomes and the plasma membrane and endosomes.
COPI - transport from the Golgi to the endoplasmic reticulum hence retrograde transfer.
COPII- Transport from the ER to the Golgi or anterograde transport.
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3) Vesicles move between the plasma membrane and other organelles in very specific, highly organized processes....
Using Figure 4.15, list the organelles of the endomembrane system and briefly describe their functions. 1....
Using Figure 4.15, list the organelles of the endomembrane system and briefly describe their functions. 1. 2. 3. 4. 5. 6. Describe each of the parts of Figure 4.30. Figure 4.15 Review: Relationships among organelles of the endomembrane system. The red arrows show some of the migration pathways for membranes and the materials they enclose. Nucleus The nuclear envelope is connected to the rough ER, H which is also continuous with the smooth ER. Jaun Nuclear envelope Rough ER Smooth...
Question 6 options: Cop II coated vesicles move cargo from the ER to the Golgi. Start...
Question 6 options: Cop II coated vesicles move cargo from the ER to the Golgi. Starting nearest the nucleus and moving toward the plasma membrane, the order of the Golgi network is: cis-Golgi, cis cisternae, medial cisternae, trans cisternae, and the trans Golgi. Cop I coated vesicles move cargo from the Golgi to the ER. Cisternal maturation models posit that each layer of the Golgi is a stable entity distinct from the preceding layer and that materials are moved to...
Help please. Thanks 14. Adenylyl cyclase produces the intracellular signal: a) Kinase b) Phosphatase c) Cyclic...
Help please. Thanks
14. Adenylyl cyclase produces the intracellular signal: a) Kinase b) Phosphatase c) Cyclic AMP d) AMP 15. When adrenalin is produced PKA is turned off a) b) PKA is turned on c) Has no effect on PKA d) None of the above 16. All proteins with a signal sequence enter the ER 17. The sorting signal, Nuclear Localization Sequence, all proteins in the cytosol to enter the 18. In order for proteins to enter the mitochondria, they...
What is the difference between a nuclear envelope and a plasma membrane? A nuclear envelope is...
What is the difference between a nuclear envelope and a plasma membrane? A nuclear envelope is made of two membranes, while the plasma membrane is a single membrane. A nuclear envelope does not contain membrane proteins, while the plasma membrane contains membrane proteins. There is no difference between a nuclear envelope and a plasma membrane A nuclear envelope allows water and gases to pass freely, while the plasma membrane does not. Which of the following is not a membrane-bound organelle?...
1) Discuss the importance of magnification and resolution in microscopy. How are the magnification and resolution...
1) Discuss the importance of magnification and resolution in microscopy. How are the magnification and resolution of a light microscope different from that of an electron microscope? 2) Which microscope would you use to study the following? a) the changes in shape of a living human white blood cell b) the finest details of the surface texture of a human hair c) the detailed structure of an organelle in a liver cell 3) State the cell theory?...
Chapter 4: A Tour of the Cell 5. Smooth endoplasmic reticulum (SER) lacks _, which gives...
Chapter 4: A Tour of the Cell 5. Smooth endoplasmic reticulum (SER) lacks _, which gives it a "smooth" appearance. 6. True or false: If false, make it a correct statement. The smooth endoplasmic reticulum con- tains many enzymes that allow it perform functions like detoxify circulating drugs. 7. Use Figures 4.14 (page 65 of your textbook) and 4.17 (page 67 of your textbook) to answer the following question. Place the following steps in the order in which they occur...
Match the functions listed on the left to the subcellular organelles responsible for those functions listed...
Match the functions listed on the left to the subcellular organelles responsible for those functions listed on the right. Question 6 options: 12345678910 sub-cellular organellse actually responsible for the packaging of cellular proteins that must be contained within membrane-bound vesicle. Proteins 'packaged' by these organelles would include hydrolytic digestive enzymes that are used within the cell but must be sequestered away from other parts of the cell so they don't digest the cell itself, or enzymes like catalases and dismutases...
The GTPase Dynamin is involved in which step of vesicular A) Binding of cargo molecules to...
The GTPase Dynamin is involved in which step of vesicular A) Binding of cargo molecules to cargo receptors B) Assembly of the Clathrin coat C) Pinching off the vesicle from the membrane D) Transport of vesicles along microtubules Which of the following events does not occur in the rough endoplasmic reticulum? A) Cleavage of the signal peptide by the signal peptidase B) Binding of chaperone proteins to misfolded or partially folded pathways C) Transfer of a pre formed oligosaccharide to...
please answer all that you can 1. You have genetically engineered green fluorescent protein (GFP) containing...
please answer all that you can 1. You have genetically engineered green fluorescent protein (GFP) containing a KDEL sequence (GFP-KDEL). When GFP-KDEL is expressed in normal human fibroblasts and examined using fluorescence microscopy, the fluorescence appears diffuse across the cytoplasm. How would you explain this observations given that KDEL is supposed to be an ER-specific sorting sequence? A. This engineered GFP would not have a hydrophobic signal sequence to get it into the RER in the first place. B. The...
The vesicles that form between the two plant daughter cells are small buttles of phospholipid membrane...
The vesicles that form between the two plant daughter cells
are small buttles of phospholipid membrane formed by the Golgi
apparatus . When these vesicles fuse , what do they become? HINT:
The bubbles are made of phospholipids.
And please fill the table in the picture.
Procedure 8.5 ESTIMATE THE TIME ELAPSED DURING THE PHASES OF MITOSIS Do all phases of the cell cycle require the same amount of time? The answer can be found by counting the number of...
Using Figure 4.15, list the organelles of the endomembrane system and briefly describe their functions. 1. 2. 3. 4. 5. 6. Describe each of the parts of Figure 4.30. Figure 4.15 Review: Relationships among organelles of the endomembrane system. The red arrows show some of the migration pathways for membranes and the materials they enclose. Nucleus The nuclear envelope is connected to the rough ER, H which is also continuous with the smooth ER. Jaun Nuclear envelope Rough ER Smooth...
Help please. Thanks
14. Adenylyl cyclase produces the intracellular signal: a) Kinase b) Phosphatase c) Cyclic AMP d) AMP 15. When adrenalin is produced PKA is turned off a) b) PKA is turned on c) Has no effect on PKA d) None of the above 16. All proteins with a signal sequence enter the ER 17. The sorting signal, Nuclear Localization Sequence, all proteins in the cytosol to enter the 18. In order for proteins to enter the mitochondria, they...
What is the difference between a nuclear envelope and a plasma membrane? A nuclear envelope is made of two membranes, while the plasma membrane is a single membrane. A nuclear envelope does not contain membrane proteins, while the plasma membrane contains membrane proteins. There is no difference between a nuclear envelope and a plasma membrane A nuclear envelope allows water and gases to pass freely, while the plasma membrane does not. Which of the following is not a membrane-bound organelle?...
Chapter 4: A Tour of the Cell 5. Smooth endoplasmic reticulum (SER) lacks _, which gives it a "smooth" appearance. 6. True or false: If false, make it a correct statement. The smooth endoplasmic reticulum con- tains many enzymes that allow it perform functions like detoxify circulating drugs. 7. Use Figures 4.14 (page 65 of your textbook) and 4.17 (page 67 of your textbook) to answer the following question. Place the following steps in the order in which they occur...
The GTPase Dynamin is involved in which step of vesicular A) Binding of cargo molecules to cargo receptors B) Assembly of the Clathrin coat C) Pinching off the vesicle from the membrane D) Transport of vesicles along microtubules Which of the following events does not occur in the rough endoplasmic reticulum? A) Cleavage of the signal peptide by the signal peptidase B) Binding of chaperone proteins to misfolded or partially folded pathways C) Transfer of a pre formed oligosaccharide to...
The vesicles that form between the two plant daughter cells
are small buttles of phospholipid membrane formed by the Golgi
apparatus . When these vesicles fuse , what do they become? HINT:
The bubbles are made of phospholipids.
And please fill the table in the picture.
Procedure 8.5 ESTIMATE THE TIME ELAPSED DURING THE PHASES OF MITOSIS Do all phases of the cell cycle require the same amount of time? The answer can be found by counting the number of...
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