Homework Answers
13. To compartmentalize chemical reactions
This lipid bilayer membrane is semipermeable which selectively allow molecules to pass through depending on the need of cell or cell organelles.
14. Phosphatidylserine
Phosphatidylserine is a phospholipid which is usually found on inner side of lipid bilayer, but on outer side in apoptotic cells. This mark the cell for phagocytocis by macrophages.
15. a. cdc7
cdc7 (cell division cycle 7) is an intacellular kinase involved in cell cycle regulation at chromosomal replication level. While Ras activation and Ca2+ are extracellular signals. Ras is intacellular protein but it is activated by external signals.
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Question 13 Cells and all organelles within a cell are wrapped in a lipid bilayer membrane...
A cell membrane consists of a lipid bilayer, which is a double layer of phospholipids. Each...
A cell membrane consists of a lipid bilayer, which is a double layer of phospholipids. Each phospholipid has a hydrophilic phosphate head and a hydrophobic lipid tail. These phospholipids are not chemically bound to one another, but rather maintain their structure due to the fact that the lipid tails do not like water. They're hydrophobic^2. If they all buddy up, then they can all stay dry. (See figure.) One way to deal with this quantitatively is to realize that there...
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...
1- The cytoplasmic side of the plasma membrane’s lipid bilayer have high concentrations of (CHOOSE THREE):...
1- The cytoplasmic side of the plasma membrane’s lipid bilayer have high concentrations of (CHOOSE THREE): a. Sphingomyelin b. Phosphatidylethanolamine c. Phosphatidylcholine d. Phosphatidylinositol e. Phosphatidylserine f. Glycolipid 2- Which of the following characteristics DOES NOT keep proteins secured to the plasma membrane? a. Transmembrane domains in the protein b. Glycosylphosphatidylinositol (GPI) anchors c. Fatty acid lipids covalently attached to the protein d. Sugar molecules covalently attached to the protein e. Associations with lipid rafts 3- Which of the following...
2 pt Question 30 organelles responsible for photosynthesis. Unlike animal cells, plant cells possess_ chloroplasts central...
2 pt Question 30 organelles responsible for photosynthesis. Unlike animal cells, plant cells possess_ chloroplasts central vacuoles plasmodesmata mitochondria D Question 31 2 pts The cell wall of plants is primarily made of the carbohydrate effectively digest. which humans can not cellulose fructose glycogen pucose Question 32 In multicellular organisms, it is important that cells communicate with each other. In plant cells. structures called plasmodesmata facilitate the movement of signaling molecules between cells. In animal cells, analogous structures are called...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion of _________________ hydrocarbon tails, enabling them to stay fluid.For example, cold-adapted organisms such as winter wheat increase the percentage of _________________ phospholipids in their membranes in the autumn to prevent the membranes from solidifying during winter.There are two major populations of membrane proteins: ___________ and _____________.Integral proteins penetrate the hydrophobic interior of the lipid bilayer, usually completely spanning the membrane as ________________ proteins.________________ proteins...
What molecules can pass people? through a lipid membrane? Which molecules are at 4. What technology...
What molecules can pass people? through a lipid membrane? Which molecules are at 4. What technology was used to figure out the fluidity of cell membranesie the membrane pids are mobile? 5. Does the mobily membrane proteins der so why Look at worksheet for das 21 Compare MPL MP2 and MP3 proteins & What is the role of SRP in the rouch ER? 7. Draw apath for a n d protein from gene expression to secretion Nudes where the is...
4. Development of organelles Aa Aa 3 Modern eukaryotic cells are very complex and have many...
4. Development of organelles Aa Aa 3 Modern eukaryotic cells are very complex and have many features that allow them to function efficiently. These complexities took a very, very long time to evolve and likely progressed as a series of small improvements that were naturally selected. For example, modern eukaryotic cells have internal membranes surrounding their organelles and the nucleus. This arrangement likely arose when the cellular membranes of some ancient bacterial cells accidentally folded to become internal membranes. Which...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface of the membrane. Net movement of particles from a region where they are more concentrated to a region where they are law concentrated is called Diffusion of water through a selectively permeable membrane down its own concentration gradient It called A solution with an equivalent concentration of water and hence the tame osmotic pressure as the fluid inside the cell is said to be...
Available surface area of cell distance over which diffusion must occur. e all of the above...
Available surface area of cell distance over which diffusion must occur. e all of the above One of these structures is not found in prokaryotic cells. Which one is it? a. ribosome b. cell wall c. mitochondria d. cell membrane e. cyotoplasm 12. Archeabacteria lacks which one of these structures? a. peptidoglycan layer in cell wall b. ribosome in the cytoplasm c. lipid in the plasma membrane d. proteins in the cell wall e. genetic material in the nucleoid 13....
Help with these bio questions please.Thank you 1 Secretory protein leave the cell by b Exoctossthey...
Help with these bio questions please.Thank you
1 Secretory protein leave the cell by b Exoctossthey remain in the cytoplasm c) pinocytosis d) receptor mediated 2 If proteins lack a c) Ras d) Signal-recognition particle b) Sorting signal 3 What purpose does the protein coat serve a) Capture molecules to remain in the cytosol b) Shapes the membrane into a phospholipid bilayer membrane c) Provides extra protection and support to the organelles d) none of these are correct cells response...
A cell membrane consists of a lipid bilayer, which is a double layer of phospholipids. Each phospholipid has a hydrophilic phosphate head and a hydrophobic lipid tail. These phospholipids are not chemically bound to one another, but rather maintain their structure due to the fact that the lipid tails do not like water. They're hydrophobic^2. If they all buddy up, then they can all stay dry. (See figure.) One way to deal with this quantitatively is to realize that there...
2 pt Question 30 organelles responsible for photosynthesis. Unlike animal cells, plant cells possess_ chloroplasts central vacuoles plasmodesmata mitochondria D Question 31 2 pts The cell wall of plants is primarily made of the carbohydrate effectively digest. which humans can not cellulose fructose glycogen pucose Question 32 In multicellular organisms, it is important that cells communicate with each other. In plant cells. structures called plasmodesmata facilitate the movement of signaling molecules between cells. In animal cells, analogous structures are called...
What molecules can pass people? through a lipid membrane? Which molecules are at 4. What technology was used to figure out the fluidity of cell membranesie the membrane pids are mobile? 5. Does the mobily membrane proteins der so why Look at worksheet for das 21 Compare MPL MP2 and MP3 proteins & What is the role of SRP in the rouch ER? 7. Draw apath for a n d protein from gene expression to secretion Nudes where the is...
4. Development of organelles Aa Aa 3 Modern eukaryotic cells are very complex and have many features that allow them to function efficiently. These complexities took a very, very long time to evolve and likely progressed as a series of small improvements that were naturally selected. For example, modern eukaryotic cells have internal membranes surrounding their organelles and the nucleus. This arrangement likely arose when the cellular membranes of some ancient bacterial cells accidentally folded to become internal membranes. Which...
_____membranes proteins are associated with the bilayer through interactions with other membrane component on the surface of the membrane. Net movement of particles from a region where they are more concentrated to a region where they are law concentrated is called Diffusion of water through a selectively permeable membrane down its own concentration gradient It called A solution with an equivalent concentration of water and hence the tame osmotic pressure as the fluid inside the cell is said to be...
Available surface area of cell distance over which diffusion must occur. e all of the above One of these structures is not found in prokaryotic cells. Which one is it? a. ribosome b. cell wall c. mitochondria d. cell membrane e. cyotoplasm 12. Archeabacteria lacks which one of these structures? a. peptidoglycan layer in cell wall b. ribosome in the cytoplasm c. lipid in the plasma membrane d. proteins in the cell wall e. genetic material in the nucleoid 13....
Help with these bio questions please.Thank you
1 Secretory protein leave the cell by b Exoctossthey remain in the cytoplasm c) pinocytosis d) receptor mediated 2 If proteins lack a c) Ras d) Signal-recognition particle b) Sorting signal 3 What purpose does the protein coat serve a) Capture molecules to remain in the cytosol b) Shapes the membrane into a phospholipid bilayer membrane c) Provides extra protection and support to the organelles d) none of these are correct cells response...
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