Hydroxylation of proline and lysine residues in collagen structure, leads to creating more Select one: O a. Hydrogen b. Covalent c. Hydrophobic d. lonic bonds, so making it stronger
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- Peptide bonds are the last bonds to break when collagen proteins are denatured Select one: of O True O False EstionWhat could be the reason why hydroxylation of proline residues is critical to the structural integrity of collagen? Select the correct response The hydroxyl moities in Pro form disulfide bonds which stabilize collagen structure. The hydroxyl moities in Pro form ionic bonds (salt bridges) which stabilize collagen structure. The hydroxyl moities in Pro form hydrophobic interactions which stabilize collagen structure. The hydroxyl moities in Pro form peptide bonds which stabilize collagen structure. The hydroxyl moities in Pro form H-bonds which stabilize collagen structure.Which statement is false? ○ Each chain of collagen adopts a right-handed helix ○ Disulfide linkages modulate the properties of keratin structure. O Modified lysine residues can enhance collagen's durability Silk resists stretching because of its ẞ conformation ○ The polypeptides in a-keratin are mainly in the a-helical conformation
- hich of the following statements is true about actin: OActin is translated by free ribosomes O Dyneins move toward the minus end of actin filaments actin can bind to GTP O actin filament is stabilized by ADP-bindingPhospholipids. Response to a signal includes: Gene expression O Metabolic activity O Membrane permeability modification O All of the above Most enzymes are:Which of the following best describes collagen? Select the correct responses): It is a sinistral super helix that is formed from three sinistral helices. It is a sinistral super helix that is formed from three dextral helices. • It is primarily made up of chiral and cyclic amino acids. It is primarily made up of chiral and acyclic amino acids. It is a dextral super helix that is formed from three sinistral helices. • It is primarily made up of achiral and cyclic amino acids. ]It is primarily made up of achiral and acyclic amino acids. • It is a dextral super helix that is formed from three dextral helices.
- A rubbery secreted matrix or proteoglycans and collagen surrounds living cells in _______. a. bone b. cartilage c. adipose tissue d. bloodHC CH reaction with HC CH lysosome CH CH HC CH3 HC CH3 HC CH HC. CH CH3 CH3 ОН OH inside the cell, propranolol sometimes encounters lysosomes, which alter its NH group as shown above (right). reacting with the lysosomes, propranolol becomes trapped inside the cell and can cause psoriasis or other inflammatory side effects. Use IMFS to explain why the altered propranolol gets trapped. TWhat is one feature of fibrillar collagen that contributes to its strength? They form crosslinks between glycine and alanine residues on adjacent collagens. They form crosslinks between lysine and hydroxylysine residues on one collagen molecule. They form crosslinks between glycine and alanine residues on one collagen molecule. They form crosslinks between lysine and hydroxylysine residues on adjacent collagen molecules.
- Which of the following is not a lipid link that anchors membrane-associated proteins to the bilayer? Thioether-linked prenyl anchors. Ester-linked triacylglycerol anchors. Glycosyl phosphatidylinositol anchors. Thioester-linked fatty acyl anchors. Amide-linked myristoyl anchors.The abundant intercellular connections gab junction can be found in O diaphragm O Heart muscle O Skeletal muscle O Smooth muscleI now know the structure difference between myoglobin and hemoglobin , however which exctaly structure difference make myglobin become a oxygen storage ? and not a oxygen transport?? Be specific! details describe how the structure connect to their role. also which exctaly structure difference make hemoglobin become better oxygen transport?? I need the specific structure that contribute to their unique role. I KNOW THE STRUCTURE DIFFERENCE , but don't understand which specific part make myoglobin only bind to oxygen, and not release oxygen