Why do cell and organelles membranes need to have its components be amphipathic?
Q: Why is the proximity between ribosomes and amino acids important for the protein formation? What is…
A: Ribosomes, macromolecular structures composed of rRNA and polypeptide chains, are formed of two…
Q: Why will you reconstitute the receptor into a lipid bilayer?
A: G-protein coupled receptor - It is also termed as 7 pass transmembrane domain receptor. this get…
Q: Why are phospholipds arranged tail to tail instead of head to head on lipid bilayers.
A: Hydrophilic molecules dissolve in water because they contain charged groups. Hydrophobic molecules…
Q: Once a protein's life span in a eukaryotic cell has hit its limit, how does the cell respond?
A: Proteins are the basic components of life. Protein is found in every cell of the human body. A chain…
Q: What class of amino acids would likely be found in the region of the protein that is embedded within…
A: d) Nonpolar and hydrophobic
Q: Why must cholesterol, although lipid-soluble, cross most membranes by means of receptor-mediated…
A: Endocytosis is a process where engulfing of the cell material takes place through the assistance of…
Q: Why do the hydrocarbon tails of membrane phospholipids provide a barrier between the inside and…
A: The membranes of a typical cell are composed of phospholipids. The phospholipids are composed of a…
Q: Why don’t proteins turn around in biological membraneslike revolving doors?
A: Membranes : It is the thin layer that forms the outer boundary of a living cell or of an internal…
Q: The fatty acid tails in the plasma membrane are ______________ which means they are _______________.
A: Phospholipids are main components of the plasma membrane which is the outermost layer of animal…
Q: Which of the following types of molecules is most likely to be found embedded in plasma membranes to…
A: Thank you for the question Answer :- The correct answer is option A ( Glycoprotein) Explanation :-…
Q: Why is an ER signal sequence from a plasma membrane protein not sufficient to send a cytosolic…
A: Protein targeting to individual organelles is an important process. Protiens are brought to the…
Q: This specific major lipid component of Acid-fast cell wall is a strong "hydrophobic" molecule that…
A: Answer :- Specific major lipid component of acid-fast cell wall is strong "hydrophobic" molecule…
Q: Given that phospholipid synthesis occurs only on ONE side of the bilayer, how does a cell end up…
A: The eukaryotic cells contains phospholipids as the major components of the plasma membrane composed…
Q: The sites of synthesis of glycosaminoglycans is A. Mitochondria and Golgi apparatus B. Endoplasmic…
A: Glucosaminoglycans are also known as mucopolysaccharides. Glucosaminoglycans are complex…
Q: Is adenylate cyclase a transmembrane protein or a peripheralprotein? What about the G protein?
A: Adenylate Cyclase is a transmembrane protein.
Q: Define The domain structure of cytoplasmic dynein.
A: Dynein is a motor protein that requires ATP as a source of energy to mediate intracellular…
Q: What four components are required for the translocation of proteins across the endoplasmic reticulum…
A: When the polypeptide is synthesized in the cytoplasm, these are translocated into the endoplasmic…
Q: Why do they do not penetrate through the lipid bilayer?
A: The cell is the basic structural and functional unit of our body. It carries out many functions in…
Q: Describe the function of plasma membrane G proteins
A: G Protein-Coupled Receptors (GPCR) is one of the largest known class of membrane protein receptors…
Q: Which of the following is always true of ribosomes? aM I CORRECT?
A: Ribosomes are organelles that are found in both the eukaryotes and prokaryotes. Ribosomes are…
Q: why can cells not convert from protein into RNA?
A: Introduction :- Ribonucleic acid (RNA) is a DNA-like molecule. RNA, unlike DNA, is a single-stranded…
Q: What is the function of a spliceosome?
A: Introduction: Prior to the RNA molecule being translated into a protein, introns are non-coding…
Q: proteins synthsized in the other location end up where in the cell in what organelles?
A: Protein synthesis is a process in which cells make protein by transcription and translation process.…
Q: Polypeptides which are normally synthesized in the endoplasmic reticulum are about 20 amino acids…
A: Proteins are synthesized by the ribosomes present on the endoplasmic reticulum, thus they are known…
Q: Unlike DNA nucleotides, which are found mostly in the nucleus, RNA nucleotides are found all over…
A: There are three types of RNA with prominent and significant functions in the cell: messenger RNA,…
Q: Why should triacylglycerol be insignificant component of plasma membrane ?
A: Answer: Introduction: Plasma membrane are selectively permeable in nature and important cell…
Q: Which amino acids would you expect to find buried in the interior of peripheral membrane protein ?
A: The membrane of the cells is composed of lipids and proteins. these proteins are made up if amino…
Q: why is it important to understand the transport mechanism in cells
A: Introduction: The cell membrane is also known as the plasma membrane. It is approximately 7 to 10 nm…
Q: For a protein to be an integral membrane protein, it would have to be amphipathic, which means that…
A: Answer: Integral membrane proteins are the proteins which are embedded in phospholipid bilayer where…
Q: Why do most molecules require the assistance of proteins to cross the cellular membrane? What…
A: The cellular membrane is a semi-permeable lipid bilayer. The lipids found in the membrane are…
Q: Some antimicrobial drugs used to treat bacterial infections disrupt the process of protein…
A: Antibiotics are the compound which is produced by the other organism which inhibit or kill the other…
Q: Why do cells lack membrane transport proteins that are specific for the movement of Oxygen?
A: Membrane transport proteins can transport molecules across the cell’s semi-permeable membrane…
Q: The ribosome catalyzes the formation of peptide bonds. Which of the following statements is false?
A: The ribosome employs entropic catalysis to accelerate peptide-bond formation by positioning…
Q: Cell-cell recognition occurs because _____ is secreted from the cell and is attached to the external…
A: Cell to cell recognition ,it is a process which give rise to particular response. It is best way by…
Q: Which protein is responsible for inhibiting endosome acidification? O A.E О В.А OC.P P O D.N
A: When a cell recognizes a viral genome in its cell body, endosomes are used to encapsulate and…
Q: One of the following is not related to integral proteins
A: The lipid bilayer is a universal component of all cell membranes and is a thin polar membrane made…
Q: Glycophorin, a protein in the plasma membraneof the red blood cell, normally exists as a homodimer…
A: Hydrophobic means water repelling. There are certain amino acids in a protein which poses…
Q: Proteins, like lipids, are free to move in the membrane. How do we know this?
A: Membranes are composed of lipid bilayers.
Q: Why do water and small, electrically charged molecules move easily through pores in the plasma…
A: Introduction The membrane that divides the interior of the cell from the external environment is…
Q: Why it is important for the cell membrane to be amphipathic ?
A: The plasma membrane is selectively permeable and is made up of lipids and proteins. These biological…
Q: Why are newly synthesized lipids added to the cytosolic side of the bilayer and not the lumen side…
A: Membranes of the eukaryotic cell are made of three lipids namely phospholipids,glycolipid and…
Q: Lipid rafts form because membrane component such as sphingolipids and cholesterol molecules…
A: Lipid rafts are assemblies or platforms that have cholesterol, phospholipids and sphingolipids as…
Q: The figure below represents a cell membrane. Each numbered structure represents a type of membrane…
A: protein has different conformation from primary to secondary to tertiary to globular protein
Q: Why glucose does not cross the cell membrane through open channels?
A: As we know glucose is a polar molecule composed of carbon connected with H and OH groups which makes…
Q: What non lipid macromolecules are inserted into the plasma membrane.
A: PLASMA MEMBRANE- Also known as Cytoplasmic membrane. Present below the cell wall and 7.5nm in…
Q: When pharmacology researchers design drugs that must enter into cells in order to be effective, they…
A: Plasma membranes are a lipid bilayer which are composed of several phospholipids joined together in…
Q: Which one of the following types of proteins completes its synthesis on cytosolic ribosomes and…
A: Ribosomes are one of the component of cell which is also called protein machinery of the cell. as…
Q: Which portion of the phosphatidylinositol molecule contributes to (a) fluidity of the bilayer and…
A: Phosphatidylinositol is a type of glycerophospholipid that contains a glycerol backbone, two…
Why do cell and organelles membranes need to have its components be amphipathic?
Step by step
Solved in 2 steps
- There is a long chain of amino acids with long sections that are mostly polar, alternating with long sections that are nonpolar. How would this chain be organized if it were destined to become a transmembrane protein? A cytoplasmic protein?Proteins may be bound to the exoplasmic or cytosolic face of the plasma membrane by way of covalently attached lipids. What are the three types of lipid anchors responsible for tethering proteins to the plasma-membrane bilayer? Which type is used by cell-surface proteins that face the external medium? By glycosylated proteoglycans?3)What is the second type of lipid that plays a major role in the plasma membrane? This lipid does not have polar and nonpolar regions (its not amphiphilic) but plays a critical role in membrane permeability. A)phospholipids b) steroid hormones c) Cholesterol 4)Which one of the following influences the rate at which diffusion can occur? Size of the concentration gradient Mass of the molecule Distance All of the above affect diffusion None of the above affect the diffusion rate
- What materials can easily diffuse through the lipid bilayer, and why? What is receptor-mediated endocytosis said to be more selective than phagocytosis or pinocytosis? What do osmosis, diffusion, filtration, and the movement of ions away from like charges all have in common? In what do they differ?A transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute b. The protein can undergo a conformational change to switch between two states: either both binding sites are exposed exclusively on one side of the membrane or both binding sites are exposed exclusively on the other side of the membrane. The protein can switch between the two conformational states only if both binding sites are occupied or if both binding sites are empty, but cannot switch if only one binding site is occupied. What kind of protein do these properties define?A transmembrane protein has the following properties: it has two binding sites, one for solute A and one for solute b. The protein can undergo a conformational change to switch between two states: either both binding sites are exposed exclusively on one side of the membrane or both binding sites are exposed exclusively on the other side of the membrane. The protein can switch between the two conformational states only if both binding sites are occupied or if both binding sites are empty, but cannot switch if only one binding site is occupied. Do you need to specify any additional properties to turn this protein into a symport that couples the movement of solute A up its concentration gradient to the movement of solute b down its electrochemical gradient?