1. МСQ 1 form the two layers of the cell membrane. A. Carbohydrates B. Proteins C. Phospholipids D. Cholesterol
Q: 8. All of the following are typical components of the plasma membrane of a eukaryotic cell Except.…
A: Introduction :- The plasma membrane, also known as the cell membrane, is the membrane that separates…
Q: 3. Explain the importance of lipid content in the structure of biological membranes
A: Membranes in living things are necessary for life as we know it. They create cells and create a…
Q: 3. Draw a simple phospholipid bilayer. Label the areas of the membrane that are hydrophobic and…
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Q: 2. The nucleic acid of a bacteriophage enters the cell through; a. Injection b. Fusion c.…
A: Bacteriophage Bacteriophages are viruses that can infect and destroy bacteria. Obligate…
Q: The RNA components of ribosomes are synthesized in the ________. a. cytoplasm b. nucleus c.…
A: The ribosome is composed of protein and ribosomal RNA .ribosomes involves in carrying the mRNA…
Q: 17. How is pinocytosis similar to phagocytosis? Both processes a. collect large particles like…
A: Transport across membrane can take place in various ways - Active transport Passive transport…
Q: Which plasma membrane component can be either found on the surface or embedded in the plasma…
A: The plasma membrane is the membrane sourrounding the cells in case of both plant and animal cells…
Q: Identify THREE macromolecules that are components of the plasma membrane in a eukaryotic cell and…
A: Plasma membrane is an integral part of the cell surrounding it and is responsible for the most…
Q: 3 .all of the following about endoplasmic reticulum is true except; A, Consists of two parts, rough…
A: The endoplasmic reticulum is a membrane bounding organelle that helps to generate power for cellular…
Q: Label the image of a cell membrane. See chapter 5 'Biology in Focus.' А. D. В. E. С. F. Label the…
A: The plasma membrane, also known as the cell membrane, is a double layer of lipids and proteins that…
Q: 1) Name TW0 types of molecule present in the plasma membrane. ii) Which of these would be destroyed…
A: a) i) Plasma membrane : It is the outer covering of the cells . It is composed of two components…
Q: 7. Use what you know about blood cells, tonicity, osmosis, and diffusion to explain why an IV drip…
A: Normal saline is usually 0.9%. This means there is 0.9G of salt (NaCl) per 100 ml of solution.…
Q: If free phospholipids were swirled into water, they would a. dissolve O b. form a lipid bilayer…
A: Phospholipid is a kind of lipid. It is made up of glyerol, fatty acid and choline phosphate. It is…
Q: 5. Draw a detailed diagram of a typical plasma membrane using ALL of the structures listed below. In…
A: The membrane which divides the contents of the cell from the external environment is known as the…
Q: In a typical eukaryotic plasma membrane, _____. A. lipids can move and diffuse through the bilayer…
A: The plasma membrane, also known as the cell membrane, is a membrane found in all cells that…
Q: Can you please answer this question and say the correct letter
A: An amphipathic molecule can be defined as the molecule having both hydrophilic and hydrophobic end.
Q: What are the forces that maintain structural integrity of biological membranes and explain how each…
A: The plasma membrane is a double layer of lipids and proteins that surrounds a cell and separates the…
Q: (2) Describe the structure of our cell membranes (fluid mosaic model..).
A: The cell membrane is basically a biological membrane that isolates the inside of all cells from the…
Q: 3. Many medications are absorbed into the blood through the cells lining the stomach and small…
A: Lipid Bilayer: A lipid bilayer (also known as a phospholipid bilayer) is a polar membrane made up of…
Q: 1. Which te of the following are major structural Compenents of the cell membrane? cellukose mucleic…
A: A biological membrane that distinguishes the inner side of the cell to its outer environment, is…
Q: 16. Lare specialized sphingolipid and cholesterol enriched microdomains within cell membrane. a. G…
A: The plasma membrane is present in all living cells present in all living organisms that protects the…
Q: 1. When considering tight junctions, adherens junctions, and desmosomes: a. Which ones do not help…
A: Intracellular bridges also known as cell junctions are cell communicating protein complexes that…
Q: A mucus producing cell in the lining of your lungs would have a large amount of ___
A: Answer: MUCUS = Mucus is the sticky , thich, semi-solid and liquid consistency material found in…
Q: The plasma membrane is made of: a) protein b) phospholipid c) nucleic acid d) carbohydrate e)…
A: The cell membrane (also known as the plasma membrane, or cytoplasmic membrane, and historically…
Q: 9- Which statement is not true about membrane structure? Provides a way of separation of cell…
A: Cell is the structural and functional unit of life. Every living organism is composed of cells.…
Q: This protein adduct can hold (tether) a peripheral membrane protein to the cell membrane: A) A fatty…
A: Ionic linkages peripheral membrane protein or interactions with the polar head regions of the…
Q: 23. Which of the following is the functional unit of a body? A.mitochondria. b. cytoplasm. c.the…
A: Introduction: A cell is the smallest unit of life which has a definite structure and a specific…
Q: A researcher isolates and collects a particular cell membrane protein and injects a pure solution of…
A: Immune system is system which helps our body to fight against the foreign substances which will…
Q: A transmembrane protein contains a stretch of amino acids that crosses the plasma membrane. The side…
A: Transmembrane protein It is an integral protein that is embedded in the cell membrane. The plasma…
Q: 6. What are the most abundant molecules in the cell surface membranes of plant cells? a. Cholesterol…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: Comment on lipid to protein ratio in the membrane of molecules that transport insoluble substances…
A: The basic structure of the membrane is provided by the lipid bilayer. However, membrane proteins…
Q: The image below shows four membrane proteins. A вс D Select all amphipathic proteins. A В C
A: There are several proteins are associated with the plasma membrane. These proteins are considered as…
Q: 10. Which of the following best represents the net movement of molecules in osmosis? A. - Sugar C.…
A: Passive transport is defined as a type or form of membrane transport that does not require energy…
Q: 9. Proteins synthesized in the rough endoplasmic reticulum are most often intended for: A. packaging…
A: The correct option is E.
Q: Water molecules 00 (a) (b) (c) Solute molecules
A: osmosis is the net movement of water across a semipermeable membrane from an area of lower solute…
Q: 6. Which are responsible for the template in the synthesis of proteins which in turn control the…
A: The protein synthesis takes place in the cytoplasm of the cell. The protein synthesis activity and…
Q: 1. The membrane around the nucleus of the cell (nuclear membrane/envelope) has a structure that is…
A: Since we only answer one question at a time, therefore we are answering the first one listed here.…
Q: 2. Which of the of the three compounds lead directly to life? (a) DNA RNA Protein (Ⓒ) Ans:
A: DNA a self-replicating material that is present in nearly all living organisms as the main…
Q: Which of the following macromolecules can be found in, or associated with, cell membranes? (Select…
A: Cell membrane is the outer covering of the layer of the cell which separates the cell contents from…
Q: noitiues Before a vesicle is allowed to fuse with its target membrane, the proteins on the surface…
A: Vesicle fusion can be defined as the phenomenon in which vesicles get merged with other membrane or…
Q: 1. Which of the following types of proteins defend the body against infectious agents? a. receptors…
A: proteins are body's building blocks that have multiple functions, such as, structure building,…
Q: 7. The sites of synthesis of glycosaminoglycans is A. Mitochondria and Golgi apparatus B.…
A: Glycosaminoglycans(GAGs) are heteropolysaccharides that are made up of both carbohydrates and amino…
Q: 1. Protein synthesis is accomplished primarily by the interaction of which two c a. vacuoles and…
A: The synthesis of protein is called translation. it is a very important process as proteins are the…
Q: 2. Which of the following statements about biological membranes are true? (Select all that apply.)…
A: Biological membranes are generally made up of lipid bilayer with sandwiched proteins between the two…
Q: 6. Why is Low Density Lipoprotein (LDL) considered “bad” cholesterol? A. Deliver fats made in liver…
A: Disclaimer: As per Bartleby guidelines, in a multipart question, we can answer only the first three…
Q: 1°What components of the plasma membrane might you drug interact with? Explain can use as many…
A: The given chemical formula is of drug - Atorvastatin. It is a lipid lowering drug which is a statin…
Q: 3) For each case given below, describe how the fluidity of membranes will change (increase or…
A: Plasma membrane is the cellular structure that helps in providing the stability to the cell and the…
Q: 3. Predict what will happen to the cell below when it is put into each of the three solutions. Fill…
A: A hypertonic solution is a particular type of solution that has a greater concentration of solutes…
Q: Draw the different spontaneously formed lipid structures: a. Monolayers and bilayers b. Micelles C.…
A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
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- 16. Lare specialized sphingolipid and cholesterol enriched microdomains within cell membrane. a. G proteins b. cytoskeletal proteins c. lipid rafts d. collagen 17. A glycoprotein within a plasma membrane has which of the following characteristics? a. Attaches to cytoskeletal proteins. b. Oriented towards the environment. c. Peripherally attached to the membrane. d. Ability to undergo flexion.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 swell1. Passive transport of molecules is determined by the concentrations gradient of such molecules A. True B. False 2. Plasmalemma is the same as the plasma membrane A. True B. False 3. Phospholipids are always oriented so that their polar head faces the calcium ions A. True B. False 4. Which of these is not a function of the lipid bilayer? A. Changes the temperature B. Provides a flexible matrix C. Imposes a barrier to permeability 5. Which of these is not true about enzymes? A. Most of them are proteins B. Are changed at the end of the reaction C. Can only speed up the rate of the reaction D. Very specific in function E. Work better in specific medium
- 13. A peripheral membrane protein is best described as a protein a. embedded within the phospholipid bilayer. b. that is transmembrane in nature. c. loosely attached to the inner membrane leaflet. d. that traverses the cytosol of a living cell. 14.Sphingomyelin is identified in plasma membrane of a healthy living cell. Which of the following describes its location in that membrane? a. The outer membrane leaflet. b. In a transmembrane arrangement. c. Intercalated between phospholipids. d. Anchored to lipids facing the cytosol. 15.Protein Y is covalently linked to a fatty acid chain of phospholipid of the inner leaflet of a cell's plasma membrane, but its structure does not extend to the hydrophobic core of the phospholipid layer. Therefore protein Y a. Has glycosylated region facing the cytosol. b. functions as a ligand receptor. c. is a single transmembrane protein. d.is oriented towards the cytosolic compartment.Which of the following is NOT a function of membrane proteins? a.Regulate the passage of ions b.Act as carrier molecules for various solutes c.Act as anchors or stabilizers for the cell membrane d.Storage of cellular nutrients1. Explain in detail how amino acids can be transported across the plasma membrane 2. By using the concept of endomembrane system, explain how plasma membrane involves in the protein synthesis of a cell. 3. With suitable examples, compare the structural and functional differences between a fibrous and globular protein. 4. A person suffers from a skin condition and loss of muscle. A doctor suspects the patient has protein deficiency. Justify why the doctor thinks so.
- 1.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. 2. Which of the following molecules/ material can freely pass through the cell membrane's phospholipids? a.carbon dioxide b.lipids c.oxygen moleculeIn 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, phospholipidsMultiple choice: ______1. Which of the following would not normally diffuse through the lipid bilayer of plasma membrane? a. carbon dioxide b. amino acid c. starch d. water ______2. which of the following is not a function of plasma membrane? a. absoprtion of materials b. enzymatic activity c. signal transduction d. transport processess ________3. which of the following elements is added to carbon, hydrogen and oxygen to form amino acids? a.nitrogen b. sulfur c. phosphorous d. calcium _______4. what type of blood is formed between monosaccharides in forminb polysaccharides? a. glycosidic linkages b. hydrogen bond c. nitrogen bond d. phosphodiester bonds _____5. which of the following is not found in animals? a. cellulose b. chitin c. glycogen d. proteins ______6. which element forms part of nucleic acids? a. carbon b. hydrogen c. nitrogen d. phosphorous _______7. which is not a role of carbohydrates? a. storage molecules b. transport…
- Cell membranes consists mainly of ________ and ________ . a. lipids; carbohydrates c. lipids; phospholipids b. phospholipids; protein d. phospholipids; ECMThe freeze-fracture technique demonstrated: a. that the plasma membrane is a bilayer with individual proteins suspended in it. b. that the plasma membrane is fluid. c. that the arrangement of membrane lipids and proteins is symmetric. d. that proteins are bound to the cytoplasmic side but not embedded in the lipid bilayer. e. the direction of movement of solutes through the membrane.The figure below illustrates a portion of a cell membrane. X denotes a membrane-spanning protein channel. Illustration of a partial cell membrane Which of the following is most likely true about the structure of X X A The upper and lower ends of X are hydrophilic and its middle is hydrophobic. C D The upper and lower ends of X, as well as its middle, are all hydrophobic. The upper and lower ends of X are hydrophobic and its middle is hydrophilic. The upper and lower ends of X, as well as its middle, are all hydrophilic.
