Question 8 Lipoplexes trapped in endosomes prevent destruction by lysosomes due to the inclusion within the liposomes of electrically neutral lipids inclusion within the liposomes of electrically charged lipids Lysosomes do not recognize them as foreign pH Ouestion 8
Q: QUESTION 9 Prosthetic groups in the class of conjugated proteins known as glycoprotein are composed…
A: Conjugate protein has protein component as well as non-protein component joined together either by…
Q: QUESTION 39 Which peptide has a greater absorbance at 280 nm? Glu-Leu-Gln-Phe-Thr-Leu-Asp-Gly-Tyr O…
A: Biological macromolecules are those large molecules that are necessary for the survival and growth…
Q: Question 31 Lipids, aside from their structural and energy storage functions, are also able to…
A: Lipids are composed of hydrocarbons and for this reason they are hydrophobic in nature. Different…
Q: Question 41 The model describes the cell membrane as an assortment of integral proteins suspended…
A: Introduction:- The cell membrane, also known as the plasma membrane, is a thin membrane that…
Q: QUESTION 10 structures. Disulfide bridges can be formed by and helps in stabilizing O Cysteine;…
A: Proteins are complex biological macromolecules that are the polymers of amino acids. Scientists…
Q: Question 6 Phospholipid bilayer is a fluid matrix. O True False
A: The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid…
Q: Question 5 The highest level of protein structure represented here is quaternary O primary O…
A: Proteins are polymers of amino acids. There are four levels of protein structure - Primary…
Q: Question 1. Cytoplasmic kinases are typically activated in the cytoplasm:
A: Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane.
Q: QUESTION 8 Amino Acids that carry a positive charge of +1 at pH 7 are (Think about it - don't rush…
A: When many amino acids are joined with each other by a peptide bond they form a…
Q: Question 18 Ribosomes are made up how much RNA component? (A) 50% в) 1/3 © 2/4 D) 2/3
A: Ribosomes are the organelles present in cells which are made from RNA and protein. Ribosomes are the…
Q: QUESTION 14 COVID-19 has been shown to effect hemoglobin's ability to bind and transport oxygen…
A: Hemoglobin is an oxygen transport protein present in the RBCs. Hemoglobin transports oxygen from the…
Q: QUESTION 97 Vancomycin O interferes with the action of the lipid carrier that transports…
A: Vancomycin , a broad spectrum antibiotic that has activity against methicillin-resistant strains of…
Q: You are in charge of generating a scaffold for use in tissue engineering applications that behaves…
A: Scaffold for tissue engineering are the support structure designed to facilitate cellular growth and…
Q: Question 11 Glycoproteins O exhibit microheterogeneity. O are only found in bacteria.B) are…
A: Glycoprotein is protein molecule which present oligosaccharides chain which attached to amino acid…
Q: Question 26 Gargling with warm salt water can temporarily relieve a sour or scratchy throat. This is…
A: Gargling Gargling includes rinsing the throat with warm salt water It can help soothe a scratchy…
Q: QUESTION 1 Protein phosphatase-1 (a.k.a. "many proteins phosphatase") acts during G-protein…
A: Protein phosphatase 1 (PP1) belongs to a certain class of phosphatases known as protein serine/…
Q: QUESTION 8 Imagine that a proline is present at position 4 in an alpha helical structure, the number…
A: Proline: Has secondary amino group(NH) involved in 5 membered ring structures and 2 bonds formed in…
Q: QUESTION 28 Red blood cells placed in a hypertonic solution may be destroyed because the blood cells…
A: INTRODUCTION The answer to question number 28 is given below.
Q: QUESTION 26 If a 10 mg/mL solution of ovalbumin (mol. wt 42 kDa) reacts with Biuret reagent, and has…
A: The biuret reaction :The absorption at 540 nm, being directly proportional to protein concentration,…
Q: QUESTION 5 Amino acid monomers are grouped into three categories based on their "R" group around the…
A: Amino acids are molecules that combine to form proteins. Amino acids are building blocks of life.
Q: Question 20 Membranes with unsaturated fatty acids in their components are more flexible and fluid…
A: Membrane contain lipids which contains the unsaturated fatty acid . And the unsaturated fatty acids…
Q: Question 35 Which of the following components is attached to lipids and proteins on the…
A: The plasma membrane, also called the cell membrane, is the membrane found in all cells and consists…
Q: Question 24 CH,-0-C-(CH,)14–CH, CH-0-C-(CH2)16-CH, CH3 сH, —о—р—о—сн, — сн, — N—сн, CH, What is the…
A: Description of given lipid structure.
Q: QUESTION 8 Phosphatidyl serine is primarily found where? cytosolic leaflet of plasma membrane O…
A:
Q: Question 3B You are designing a protein. You want to create a section of the protein that will…
A: Plasma membranes are composed of lipid bilayer, proteins (integral, peripheral, and lipid anchored),…
Q: Question 15 The most important job of a bacterial cell wall is to O prevent osmotic lysis to prevent…
A: Bacteria (prokaryotes) are one-celled microorganisms that exist almost everywhere. They can divide…
Q: All living organisms, including both bacteria and Eukaryotes have: (Select all that apply) the…
A: The cells are the primary unit of life. An organism may be unicellular or prokaryotic. For example,…
Q: QUESTION 13 Genes determine polypeptide structure, which determines the structure of enzymes and…
A: Sequence of DNA determines the structure of proteins. The sequence determines the amino acid…
Q: QUESTION 40 Osmosis is the: O net movement of water to the side of the membrane having the lower…
A: The term Osmosis originated from Osmosis which means Push. Osmosis is the process of movement of…
Q: QUESTION 7 When it comes to diseases cased by mutations in the mitochondria, identical twins O Will…
A: Given: Diseases caused by mutations in the Mitochondria in Idenctical twins.
Q: QUESTION 36 Lipophilic ligands bind to intracellular receptors and open ligand-gated ion channels…
A: The plasma membrane is also known as a cell membrane that helps to separate the cell's inside…
Q: QUESTION 19 Nucleotides, in a polynucleotide sequence, contain phosphate groups bonded to the: O C3…
A: DNA or deoxyribonucleic acid and RNA or ribonucleic acid is a polynucleotide chain made of…
Q: Question 6 If DNA stays in the nucleus, what structure allows for proteins to be created in the…
A: Introduction : The central dogma of molecular biology describes the process by which genetic…
Q: Question 17 Osmosis is the movement of across a selectively permeable membrane. O sugars O oxygen O…
A: Introduction Semipermeable membrane:- It is a type of biological or synthetic, the polymeric…
Q: QUESTION 2 Most amino acids exist in the L-form because O Stereospecific binding is maximum in this…
A: Amino acid: Amino acids are the building block of proteins and there are about 300 amino acids…
Q: Question 14. Match the transport process to the correct description or example. Secondary Active…
A: Chemical energy is required for active transport since it is the movement of biochemicals from areas…
Q: Question 29 Sponges (Porifera) All of the above pump water through their sponge material with the…
A: Members of this phylum are known as sponges. They are mostly marine and mostly asymmetrical animals.…
Q: QUESTION 19 Charged phosphoinositides are recognized and bound by Pleckstrin Homology domain PTB…
A: Phosphoinositides are a family of minority acidic phospholipids in cell membranes. Their principal…
Q: QUESTION 3 semipermeable brane Salt lecules Weter Mevemant of weter elendes Eql "aentreti" of weter…
A: Osmosis is the phenomenon by which water (solvent) will moves from lower water potential area to the…
Q: Question 6 When light hits the special light-reactive molecular units inside rod cells, how do these…
A: Introduction : 1. Eyes are the special sensory organs which help living organisms with vision .…
Q: You are studying the effects of removing integrins from cells. Which of the following abilities is…
A: The function of integrins receptors is to bind or respond to the extracellular matrix of the cell.…
Q: Question No.1 (1) A positive Tollen’s test classifies a monosaccharide as a reducing sugar. (2) The…
A: Carbohydrates are considered as the energy fuel for the body, which breaks down and enters into the…
Q: QUESTION 25 Compared to skeletal muscle, cardiac muscle O has gap junctions that allow it to act as…
A: Muscles of the skeletal, smooth, and cardiac systems make up the muscular system. It allows the body…
Q: Question #14. Amino acid mutations can in some cases dramatically alter protein structure and…
A: the structure of the protein is determined by the charge of the amino acid.
Q: QUESTION 6 According to Deamer, compartments are so important to life because evolution requires…
A: true
Q: QUESTION 28 Multiple Choice: What type of interaction leads to the formation of scrapies-associated…
A: 28. Scrapie associated (SAF) fibrils are considered an abnormal filamentous structure. These are…
Q: Question 10 Proteoglycans are often made up of glycosaminoglycans (chondroitin sulfate, keratan…
A: GLYCOPROTEIN: Glycoproteins are proteins that have oligosaccharide chains (glycans) covalently…
Q: Question 47 Bacterial cell walls are composed of O chondroitin sulfate chains O peptidoglycans O…
A: The polysaccharides are made up of monosaccharide units that are present in bacteria, plants and…
Q: Peptidyl transferase activity (peptide bond enzyme activity) is associated with what site in the…
A: The translation is a process through which the polypeptide chain is synthesized based on the…
Q: Question 23 A patient has an infection caused by a bacterial species that produces toxins that are…
A: Hyaluronic acid (HA) is a different kind of glycosaminoglycans because it is non-sulfated. It is…
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- QUESTION NO. 1L-Carnitine is synthesized primarily in the liver but also in the kidneys and then transported to other tissues. It is most concentrated in tissues that use fatty acids as their primary fuel, such as skeletal and cardiac muscle. In this regard, L-carnitine plays an important role in energy production by conjugating to fatty acids for transport from the cytosol into the mitochondria. L-carnitine shuttle is an example of A. ion driven active transport B. facilitated diffusion C. simple diffusion D. ATP driven active transportE. symport F. antiportQUESTION NO.2 Statements: (1) Glucose is both a hexose and a aldose. (2) There can never be more than three enantiomers for a molecule. (3) All common disaccharides have beta-one-four linkages. Which statements are true?QUESTION NO. 1 Cystic fibrosis is a frequent generic disease of Caucasians. The CF gene codes for a protein called the cystic fibrosis transmembrane conductance regulator (CFTR) which functions as a cAMP-regulated chloride channel. The protein has two membrane-spanning domains, two domains that interact with ATP, and one regulatory domain. The most common defect is in the gene for one of the ATP binding domains. The result is a protein that does not fold correctly in the endoplasmic reticulum, is not properly glycosylated, and is nor transported to the cell surface. Rather, it is degraded in the cytosol within proteasomes. Drugs that foster chaperone interaction with the mutant protein are a potential therapeutic approach. Chaperones A. are always required to direct the folding of proteins. B. when bound to protein increase the rate of protein degradation. C. usually bind to strongly hydrophilic regions of unfolded proteins. D. sometimes maintain proteins in an…Question 11. // Hint: Isoelectric focusing separates proteins based on their pI values, and can separate proteins that only differ by a net charge of ±1.±1. Recall that an amino acid residue with a negatively charged R group has a relatively low isoelectric point (pI) where it has zero net charge. Likewise, an amino acid residue with a positively charged R group has a relatively high isoelectric point (pI) where it has zero net charge. Order from Low pH to High pH
- QUESTION 22 When the final product of a series of enzymatically-catalyzed reactions binds to the first enzyme in the pathway to limit its production, it generally uses ___ because the structure of this final product is generally not similar to that of any of the enzyme's normal substrates. Allosteric activation Zymogen activation Covalent modification Competitive inhibition Allosteric inhibitionQuestion 1: ATP synthases contains 3 copies of each of the large subunits (called α and β in the E. coli enzyme). The number of c subunits can vary among different ATP synthases, ranging from 8 to 17. Part a: Briefly explain how this variation in the number of c subunits would affect the energetics of ATP synthesis. For a fixed value of the protonmotive force, how much energy can the gradient provide to drive one revolution of the ATP synthase, in a synthase with 8 c- subunits versus a synthase with 17 c-subunits?QUESTION NO. 1Targeting a protein to be degraded within proteasomes usually requires ubiquitin. In the function of ubiquitin all of the following are true except: A. ATP is required for activation of ubiquicin. B. a peptide bond forms between the carboxyl terminal of ubiquitin and an ε-amino group of a lysine . C. linkage of a protein to ubiquitin does not always mark it for degradation. D. the N-terminal amino acid is one determinant of selection for degradation. E. ATP is required by the enzyme that transfers the ubiquitin to the protein to be degraded QUESTION NO. 2Much of procollagen formation occurs in the endoplasmic reticulum and Golgi apparatus which requires signal peptide. All of the following statements about targeting a protein for the ER are true except. A. signal peptide usually has a positively charged N-terminus and a stretch of hydrophobic amino acids. B. signal peptide emerging from a free ribosome binds signal recognition…
- QUESTION NO.1which of the following are chemical characteristics of monosaccharides? A. They contain multiple hydroxyl groupsB. they contain an aldehyde or ketone group C. They contain a branching carbon backbone D. They contain a carbon-carbon double bond E. Every carbon in a monosaccharide is fully reduced F. Every carbon in a monosaccharide is a chiral centerQUESTION NO.2 glucose absorption is hindered by _________ deficiency A. Retinol B. Thiamine C. Potassium D. Sodium E. Ascorbic acid F. Calciferol QUESTION NO.3 phospholipids is made primarily from A. L-glycerol 1-phosphate B. L-glycerol 3-phosphate C. D-glycerol 3-phosphate D. -glycerol 1-phosphate E. sn-glycerol 1-phosphate F. sn-glycerol 3-phosphateQUESTION 26 During gluconeogenesis, whereby liver cells convert pyruvate to glucose, Fructose-6-phosphate (F6P) is converted to Glucose-6-phosphate (G6P). If the standard equilibrium concentrations are: [F6P] = 0.52 M and [G6P] = 1.48 M, then Keq’ is ______ and the reaction is ________. Fructose-6-P ó Glucose-6-P > 1; exergonic > 1; endergonic < 1; exergonic < 1; endergonicQUESTION 21 You are in charge of generating a scaffold for use in tissue engineering applications that behaves similarly to the natural ECM proteins. What proteins might you want to include in your scaffold? A Fibronectin only B Collagen, fibronectin, and proteoglycans C Proteoglycans only D None of the above are proteins in the ECM E Collagens only
- Question 1: When the CAC is run in reverse by microorganisms that use it to fix carbon, the citrate synthase reaction is different and is catalyzed by an enzyme called ATP-citrate lyase. Write the reaction catalyzed by ATP-citrate lyase, then briefly (in one sentence) explain why the use of different chemistry (different from the ‘normal’ direction) makes sense here.Question 1Predicting Secondary Structure Which of the following peptides is more likely to take up an -helical structure, and why? (a) LKAENDEAARAMSEA (b) CRAGGFPWDQPGTSNQuestion:- 2) oxaloacetate (OAA) occurs as an important intermediate in 2 metabolic processes a) indicate these reaction steps where OAA occurs b) indicate structure for OAA 3) how many reduced equivalents (as electron carrier) are obtained after an oxidation of C16H12O2? describe in detail the structure of these steps.