TIMOTHY UNDERWOOD 6506 HEDGETON CT SPRING, TX 77389 ST en 50. What is the chemical found in the outer portion of the cells in the micrograph on the right? a.chitin b.starch c.cellulose d.ribose e.phospholipid bilayer
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- A molecule into which a radioisotope has been incorporated can be used as a(n) ________ . a. compound b. tracer c. salt d. acidWhich method for determining protein structure involves cleaving proteins into smaller polypeptides using enzymes and using performic acid and dithiothreitol (DTT) to remove disulphide bridges? a)Matrix-assisted laser desorption/ionization mass spectrometry b)Electrospray ionization mass spectrometry c)Edman's degradation d)Tandem mass spectrometry e)Enzyme protease fragmentation.This technique does not provide atomic-level structures of proteins a)Circular dichroism b)Crystallography c)CryoEM d)Protein NMR e)Molecular dynamics simulations
- Which level(s) of protein structure can you find the α helix and the β pleated sheet? mutiple answer maybe quaternary secondary primary tertiaryWhich of these nanomaterials are not applicable to nanotechnology? Phospholipid (0.9 nm) Phospholipid bilayer (0.9 nm) DNA (2.5 nm) Carbon Nanotube (1 nm) Buckyball (1 nm) Xray wavelength (10 nm) Glucose Molecules (1 nm) Celsium Atom (0.267 NM) Alpha Helix (1.2 nm)Please, help with the answer and explain it: When observing a bacterial cell, a scientist observed a chain forming attached to a ribosome. The chain absorbed a stain that was specific for amino acids, The chain that was forming was completely linear, representing which level of protein structure? protein? A) primary B) secondary C) tertiary D) quaternary
- A)Why is the unit cell concept important? (one sentence) B) The reason for the development of polycrystalline material is because ( one sentence only) C) The mechanical properties of materials is dictated by atomic bonding and————-?I do not understand the question "What is chemically nonsensical about this structure? H-C=C-H" from the 7th Edition of Campbell Essential Biology chapter questions at the end of Chapter 2. I am not finding anything in the reading that explains this. I read the expert explanation, but I am still struggling to understand what it means.A student carries out the following experiments and records the following observations. 1. A few drops of a solution of KOH (aq) is added to a solution of Fe(NO3)3 (aq). A red gelatinous solid forms immediately upon addition. 2. A few drops of a solution of KOH (aq) is added to a solution of NaNO3 (aq). No changes are observed. 3. A few drops of a solution of KOH (aq) is added to a solution that could contain Fe3+(aq) and/or Na+(aq) ions (the solution could contain both ions, just one ion, or neither ions). A red gelatinous solid forms immediately upon addition. Select all of the answers that are consistent with the data from those 3 experiments. Group of answer choices The unknown contains Fe3+(aq) and Na+(aq) The unknown contains Fe3+(aq) It is not possible to determine the presence of Na+(aq) from this experiment The unknown contains neither Fe3+(aq) or Na+(aq)
- A molecule into which a radioisotope has been incorporated can be used as a(n) ________ . a. compound b. tracer c. salt d. acidDefine the following terms:a. Lineweaver-Burk plotb. allosteric enzymec. macromolecular crowdingd. reaction intermediatee. carbocationWhich of the following techniques takes advantage of NET CHARGE to purify/characterize proteins? a. Isoelectric focusing b. Hydrophobic chromatography c. Affinity chromatography d. DialysisExplain.