Screenshot 2024-05-14 at 8

Question 20 Signal sequences are often found at the C-terminus of the polypeptide chain. True False Question 21 Attachment of an isoprenid group to a protein to form a lipid-linked protein Palmitoylation Acetylation Prenylation Lipidation Question 22 Each GroEL subunit has an ATP-binding pocket that catalyzes hydrolysis of its bound ATP True False Question 23 Calnexin and calreticulin recognize lipid molecules covalently attached to proteins to assist proper folding and translocation O True O False

Question 4 Which of the following represents an example of a proteoglycan? attachment of several molecules of heparin to the peptide antithrombin II attachment of a Gal-B(1,3)-GalNAc disaccharide to the fish antifreeze protein attachment of a small oligosaccharide to an immunoglobulin O attachment of a small antigenic determinant to a membrane bound protein of a cell

Question 22 Each GroEL subunit has an ATP-binding pocket that catalyzes hydrolysis of its bound ATP True False Question 23 Calnexin and calreticulin recognize lipid molecules covalently attached to proteins to assist proper folding and translocation True False

PDB code 7BSJ Questions Q1 - What is the name of the protein Q2 - What does the protein do?  Q3 - What are the structural features of the protein?  Q4 - What are two features of your protein’s structure that make it different OR similar to haemoglobin?  Q5 - Based on the structural properties of your protein, how resistant (or sensitive) would your protein be to heat denaturation and why?

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 1 Signal sequences direct their delivery to different locations in the cell or outside the cell True False Question 2 Which protein targeting pathway refers to the movement of polypeptides through the membrane as it is being synthesized? Proteolysis O removal of phosphoryl group O acetylation O None of the given Question 3 Molecular chaperones stabilize unfolded proteins and bind to protein in the native conformation O True False

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 False

QUESTION 1 A macromolecule binding to its ligand at 1x 10Mis considered weak binding. True O False QUESTION 2 For protein structure determined using X-ray difraction with the 1.1-Angatrom resolution, the electron density of the hydrogeon atoms becomes clearly visible True False QUESTION 3 In Creutzfeldt-Jakob disease, the native prion proteins that are alpha rich in the structure are mistolded to beta rich structures that nucleate to form an amyloid iber. These prion proteins are extremely stable at physiological temperatures True False QUESTION 4 is a high-pressure cell homogenizer used for generating cell lysate.

Biological waxes are all   Question 6 options:   Cholesterol is a sterol that is commonly found in mammals.   Sterols are precursors of steroid hormones.   Sterols are more common in plasma membranes than in intracellular membranes (mitochondria, lysosomes, etc.).   None of the answers are correct   Sterols are commonly found in bacterial membranes.

Question 9 Choose the CORRECT statement. O A polypeptide chain may have abrupt changes in direction and restriction in geometry because of the presence of glycine O A polypeptide chain may have abrupt changes in direction and restriction in geometry because of the presence of valine O A polypeptide chain may have abrupt changes in direction and restriction in geometry because of the presence of arginine O A polypeptide chain may have abrupt changes in direction and restriction in geometry because of the presence of proline

QUESTION 4 What percent are the following two 20 amino acid peptides similar? MTEKRVQDKAKLIVDEQACT MTDVRIQERTKLKVFEQLCI O 25% O 25% O 75% 90%

izzing/user/attempt/quiz_start_frame_auto.d21?ou=D3269550&isprv3&drc%3D1&qi=1995726&cfql=0&dnb3D0&fror 12 Time Left:0:04:09 Angelina Tran: Attempt 1 O anabolism Question 50 (2 points) Listen Which of the following is NOT part of the endomembrane system? O chloroplast plasma membrane vesicles endoplasmic reticulum Previous Page Next Page Page 10 of 10 Submit Quiz 45 of 50 questions saved MacBook PrO

Question 28 : In a SDS-PAGE analysis (Indicate the right answer) : A- The proteins are denatured and positively charged by the addition of SDS. B- Large proteins run faster than small proteins. C- If the pHi of a protein corresponds to the pH of the running buffer the protein becomes positively charged (+) and cannot migrate anymore into the gel. D- For reducing disulfide bridges one needs to add a reducing agent such as 2-mercaptoethanol or DTT. E- All is wrong.

Question 9 What structural features are true regarding the transmembrane and cytoplasmic domains? Choose all that apply a stretch of about 20 hydrophobic residues with non-conserved sequences is anchoring the transmembrane domain no non-catalytic sequences are found non-catalytic sequences are on both sides of the catalytic part of the protein no sequence similarity is found for the intracellular domain

Time left 2:56:36 Question 100 Glycosidic bond links two amino acids together in a polypeptide chain. Select one: Not yet answered OTrue Marked out of O False 1.00 P Flag question Question 101 All of the following correctly describe the sodium-potassium pump EXCEPT: Oa. A total of five binding sites are present in the sodium-potassium pump Not yet answered O b. Potassium ions are pumped into the cell, where they are present in lower concentration than the Marked out of extracellular fluid 1.00 O c. Molecules are pumped from low concentration to high concentration P Flag question O d. Energy is required for the process to take place O e. The transport proteins will undergo some conformational changes

Which statement about sickle cell anemia is FALSE?   Question 28 options:   cells containing the mutated hemoglobin change in shape and can block capillaries   the amino acid mutation involved is from a charged residue to a polar, uncharged residue   it involves a hydrophobic patch on the surface of hemoglobin that causes hemoglobin to stick to itself   the sickle cell mutation provides some resistance to malaria   it can be caused by a single amino acid mutation in one chain of hemoglobin

Question True/False Question: Cholesterol is the main storage form of lipids in plants and anmals. True False

Question: A sample of 5 mL of blood is tested for the enzyme creatine kinase (CK). The blood test reveals that the sample contains a total amount of 1.050 IU of CK. The normal range for CK in a blood test is 25-200 IU per liter. The patient from whom this blood was drawn then has creatine kinase levels that are

offset=next&assignment ProblemID=218423920 Which of the following statements is FALSE regarding proteins? The three-dimensional shape of a protein is critical for the functioning of that protein. O There is a link between improperly folded proteins and disease in both mad cow disease and Alzheimer's disease. Alzheimer's disease causes proteins in the brain to become improperly folded. O High heat and a change in pH can denature a protein. Submit Part C Request Answer Why does the story in the video start in Colombia? <

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 4. Imagine the main chain of a protein bends back on itself so that two amino acid residues R1 and R2 come close to each other. In the table below are four possibilities for what R1 and R2 might be. In each case, decide whether a specific interaction could form between the residues. If a specific interaction could form, give the name of the interaction. R₁ cysteine tyrosine threonine arginine R₂ cysteine phenylalanine glutamine aspartate specific interaction? OO yes O yes O no no OO O yes no yes no name of specific interaction 0 П 0 0

Please help me answer questions Part IV- 1, 3, 4 Thank you, Heres a link to the PDF https://www.cusd80.com/cms/lib/AZ01001175/Centricity/Domain/8922/eofad.pdf

Question 3 of 3 > r: te e Select the true statements about protein secondary structure. IS IS In a B-pleated sheet, the side chains are located between adjacent segments. Peptide bonds stabilize secondary structure. The secondary level of protein structure refers to the spatial arrangements of short segments of the protein. In an a-helix, the side chains are located on the outside of the helix. The a-helix is held together by hydrogen bonds between the amide N-H and C=0 groups. earning, Inc. privacy policy terms of use contact us help about us careers 112 30 FEB 2 4.

I need help with these tables. Q8 is a comparison between simple and complex proteins. I guessed a few of them

QUESTION 4 Which of the following amino acids would stick to a CM-sepharose column at pH 7.07 Choose all that apply. Partial credit is allowed for each correct answer, arnd negative scores are allowed for incorrect answers. O Arginine (pl -10.76) O Glutamic acid (pl 3.22) O Cysteine (pl 5.07) O Histidine (pl 7.59)

QUESTION 2 Which peptide will most strongly attach to a carboxymethyl ion exchange column at pH 7.4? O N'-Glu-Lys-Arg-Asp-Tyr-C' O N'-Tyr-Arg-Lys-Arg-Gly-C' O N'-Gly-Glu-Gln-Asp-Asp-C' O N'-Val-Ala-Leu-lle-Arg-C' QUESTION 3 Which will be product of transcription from this double-stranded (ds) DNA sequence? 5' - atgttcaaagcctattcg - 3' 3' - tacaagtttcggataagc - 5' O YKFRIS O uacaaguuucggauaagc O auauucaaaaccuauuca Which will be product of transcription from this double-stranded (ds) DNA sequence? 5' - atgttcaaagcctattcg – 3' 3' - tacaagtttcggataagc – 5' O YKFRIS O uacaaguuucggauaagc O auguucaaagccuauucg Ο MFKAYS QUESTION 4 The structure of hemoglobin consists of a 2a and 2B heterotetramer. O quaternary O tertiary O secondary O primary

Which one of the following is NOT true about ECM? O ECM is composed of an interlocking mesh of fibrous proteins and glycosaminoglycans. O ECM supports cell-to-cell communication and stem cell differentiation. O Proteoglycan complex has a unique bottle brush-like structure. It is positively (+) charged. It is composed glycosaminoglycans and carbohydrates that are attached to the proteins. O ECM is a collection of extracellular molecules secreted by cells that provides structural and biochemical support to the surrounding cells.

Question 6 What conformation of B subunits contributes to form ATP? F1 conformation O open conformation loose conformation tight conformation O conformation

Which of the following enzymes are involved in phosphorylation process   Question 8 options:   Lipases   Phosphatases   Proteases   Kinases

5 pts Question 9 95 58 40 HS HS SH 65 8 M urea and 72 B-mercaptoethanol 65 Hs84 Hs- SH 72 26 HS 110 SH 84 26 110 95 124 40 58 Native ribonuclease Denatured reduced ribonuclease Figure 2.53 Biochemistry, Seventh Edition O 2012 W. H. Freeman and Company The image above shows how Anfinsen unfolded ribonuclease for his classic experiment to see if proteins contain all necessary information for adopting their folded states on their own. To achieve proper refolding and ribonuclease activity, Anfinsen must have: trick question: ribonuclease cannot adopt its folded state without the help of cellular machinery removed the mercaptoethanol followed by the urea very carefully removed both the urea and mercaptoethanol at the same time removed the urea followed by the mercaptoethanol

Question 32 What will be the anticodons that will arrive in the translation of MRNA below? MRNA 5- AAUAUGCGGAUGCCCGAA -3 O "AAU, AUG, CGG, AUG, CCC, GAA" O "UAC, GCC, UAC, GGG, CAA" O "AUG, CGG, AUG, CCC, GAA" O "UUA, UAC, GCC, UAC, GGG, CAA"

Question 1 (Mandatory) ( Phospholipids contain a glycerol backbone attached to two fatty acid hydrocarbon tails (often 18-20 carbons long), and a phosphate-containing polar group True False Question 2 (Mandatory) (1 point) Lipids are glycosylated in the Golgi (glycosylation), with oligosaccharides added on the lumen side True False

Passage 1 (Questions 1-4) Human immunodeficiency virus 1 (HIV-1) protease inhibitors have been successful at lowering HIV-1 levels and blocking the onset of acquired immune deficiency syndrome (AIDS). However, because HIV-1 mutants are developing resistance to current protease inhibitors, new inhibitors such as Compound 1 (molar mass: 483.5 g-mol-¹) are being tested. N Compound 1 Compound 1 has been shown to inhibit HIV-1 protease with K₁ = 60.3 μM (Table 1). K; is the dissociation constant for the enzyme-bound inhibitor, which is either El or ESI, depending on the type of inhibitor. The peptide substrate for HIV-1 protease is IRKILFLDG. HIV-1 protease hydrolyzes only the peptide bond after leucine and before phenylalanine. Compound 1 (μm) 0 60.0 120 Table 1 Kinetic Parameters of HIV-1 Protease with and without Compound 1 N H Км Ксач Км K₁ (mM) (S¹) (mM-¹ s¹) (HM) 1.678 0.250 00.149 0.832 0.126 0.151 60.3 0.430 0.064 0.149 60.3 Note: HIV-1 protease follows Michaelis-Menten kinetics. N…