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 10 Select a property that does not belong to allosteric enzymes. They conform to hyperbolic Michaelis-Menten kinetics They may have binding sites for regulatory molecules that are separate from active sites They tend to have a signmoidal curve of rate versus [S] They undergo conformation changes as a result of modulator binding.Question 8 Which statement about N-linked glycosylation is correct? O N-linked oligosaccharides are attached to proteins one sugar at the time in the endoplasmicreticulum. O N-linked sugars are attached to proteins as a 14 residue oligosaccharide during translation in the endoplasmic reticulum. O N-linked sugars are attached to proteins as a 14 residue oligosaccharide during translation inthe cytoplasm. O N-linked sugars are attached to proteins as a 14 residue oligosaccharide after translation inthe Golgi apparatus.Question 7 Which of the following translocases serves as the central entry gate for cytosolic precursor proteins imported into the mitochondria? O TIM 23 SAM complex O TIM 22 OTOM complex Question 8 Protein disulfide isomerase catalyzes the disulfide interchange reactions in polypeptides during protein folding in vivo True False Question 9 Protein lipidation occurs in the following cellular sites, EXCEPT Golgi O ER Cytoplasm None of the given
- Question 14 The folding of an unfolded protein proceeds from low entropy disordered state to a single high entropy, low energy native conformation O True O False Question 15 The GroES subunit has 14 identical 549-residue subunits arranged in two stacked rings with 7 subunits eac True FalseQuestion (2rarate nusCollagenase is an endopeptidase that digest native collagen in the triple helix region. The diagram below shows the kinetic plot of collagenase with varied substrate concentration. Plot collagenase activity in response to substrate concentration and find approximate values for Vmax and Km. (please indicate your assumption/s accordingly for this question) 0,04 0,035 0 luM) 0,03 O 200 (uM) 0,025 X 270 (uM) 0.02 A 350 (uMI 0,015 0.01 0,005 On 10 20 30 50 60 Collagenase [pg/ml] Collagenase activity [mM/min]Question 6 of 19 Proteasomal proteases can be inhibited by compounds such as ixazomib (shown below). How does this compound inhibit protease activity? HO Ixazomib O Uncomptetitively O Competitively O Noncompetitively
- Question 7. What is the rate-limiting step in the formation of an actin microfilament?Question 2. An enzyme was found to convert Acetyl-coA to an acetyl-cysteine intermediate of the enzyme. The structure of cOA is: H H НО СН; HS — СH2— СH2 — N—C—CH,— CH2—N- С—С—С—CH;—0—Р- 0–CH2 Adenine н CH H H H Phosphopantetheine group of coenzyme A 2-O3PO ОН Draw a plausible chemical mechanism. Where is the acetyl-group in acetyl-coA? What is the reactive group of the protein? The reaction is enhanced at higher pH. How is this consistent with your mechanism? Is covalent catalysis involved?QUESTION 4 What TYPE of inhibition is observed in the following: S E Competitive Non-competitive Uncompetitive Allosteric
- QUESTION 10 Which one of the following statements does NOT correctly describe the current state of the chymotrypsin-substrate complex below or the next mechanistic step that occurs? s,' G193 S195 NH NH R -NH R-NH HN- Ser-195 His-57 HN Asp-102 OA. This intermediate is part of a nucleophilic acyl substitution reaction. OB. In the next step His-57 protonates Ser-195. O C. In the next step His-57 activates a water molecule. O D. In the next step His-57 protonates the leaving group. OE. In the next step the N-terminal fragment of the original substrate departs.question 48 which of the following options is NOT a function of the Golgi apparatus ed Select one: out of O a. Synthesis of polysaccharides like cellulose question O. b. Modification of glycoproteins O c. Sorting and packaging of materials into vesicles O d. Synthesis of pectins O e. Tagging of vesicles with molecular markersQUESTION 2: Select the correct statement regarding the actin cytoskeleton O They are involved in the formation of the axoneme Actin microfilaments are the most stable rytoskeleton network can undergo catastrophe due to GTP hydrolysis-mediated conformational changes Synthesis and degradation of actin microfiaments is directional with g-actin subunits added only to the end of the microflament while depolymerization occurs at the end. QUESTION 3: From the list below salect the correct statements regarding the genetic code The basis of the genetic code are codons Cosons are formed by 5 consecutive nucleotides The genetic code has a possibile 64 different codem Codos code for 30 distinct amo acas The genetic code has built in degeneracy