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Which protein properties allow UV spectroscopy to be used as a method of determining concentration?
  • a)
    Proteins have partially planar characteristics in peptide bonds.
  • b)
    Globular proteins cause scattering of light.
  • c)
    Proteins contain aromatic groups in certain amino acids.
  • d)
    All organic macromolecules can be assessed with UV spectroscopy.
Correct answer is option 'C'. Can you explain this answer?
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Which protein properties allow UV spectroscopy to be used as a method ...
UV spectroscopy is best used with conjugated systems of double bonds. While the double bond in the peptide bond does display resonance, this is not adequate for UV absorption. However, aromatic systems are conjugated, and phenylalanine, tyrosine, and tryptophan all contain aromatic ring structures.
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A cell membrane defines the limits of the cell and serves as the boundary between the cell and its surroundings. It is made of a double layer of lipids that blocks the passage of polar substances. The image below shows a typical cell membrane:One important concept related to cell membranes is membrane fluidity. Cells need to keep a certain level of flexibility in order to maintain their stability. Increasing temperature, cholesterol content, and unsaturation of the fatty acid tail of the phospholipids in the bilayer increases the membrane fluidity.Substances pass through the cell membrane by a process called “transport”. Transport can be passive if no energy is consumed or active if energy is required to transport substances across the membrane. The movement of an uncharged solute across a membrane depends on its concentration gradient, while the movement of an ion depends both on its concentration gradient and the electric potential of the membrane. Membranes are said to be polarized if the resting membrane potential is different than zero, depolarized if the membrane potential is higher than the resting membrane potential, and hyperpolarized if the membrane potential is lower than the resting membrane potential.The following table shows the characteristics of the different types of solute transport across a membrane:Q.When red blood cells are placed in a solution with a lower concentration of sodium ions, water molecules pass through the cell membrane from the outside to the inside of the cell in order to balance out the concentration of sodium ions. This is an example of what type of transport? (You may consult the attachment.)

A cell membrane defines the limits of the cell and serves as the boundary between the cell and its surroundings. It is made of a double layer of lipids that blocks the passage of polar substances. The image below shows a typical cell membrane:One important concept related to cell membranes is membrane fluidity. Cells need to keep a certain level of flexibility in order to maintain their stability. Increasing temperature, cholesterol content, and unsaturation of the fatty acid tail of the phospholipids in the bilayer increases the membrane fluidity.Substances pass through the cell membrane by a process called “transport”. Transport can be passive if no energy is consumed or active if energy is required to transport substances across the membrane. The movement of an uncharged solute across a membrane depends on its concentration gradient, while the movement of an ion depends both on its concentration gradient and the electric potential of the membrane. Membranes are said to be polarized if the resting membrane potential is different than zero, depolarized if the membrane potential is higher than the resting membrane potential, and hyperpolarized if the membrane potential is lower than the resting membrane potential.The following table shows the characteristics of the different types of solute transport across a membrane:Q.In bacteria, lactose can be transported inside the cell by a process called symport, in which the transport of lactose against its concentration gradient is coupled with the transport of protons down their concentration gradient from the outside to the inside of the cell. Which of the following is a false statement regarding lactose symport? (You may consult the attachment.)

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Which protein properties allow UV spectroscopy to be used as a method of determining concentration?a)Proteins have partially planar characteristics in peptide bonds.b)Globular proteins cause scattering of light.c)Proteins contain aromatic groups in certain amino acids.d)All organic macromolecules can be assessed with UV spectroscopy.Correct answer is option 'C'. Can you explain this answer?
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Which protein properties allow UV spectroscopy to be used as a method of determining concentration?a)Proteins have partially planar characteristics in peptide bonds.b)Globular proteins cause scattering of light.c)Proteins contain aromatic groups in certain amino acids.d)All organic macromolecules can be assessed with UV spectroscopy.Correct answer is option 'C'. Can you explain this answer? for MCAT 2024 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about Which protein properties allow UV spectroscopy to be used as a method of determining concentration?a)Proteins have partially planar characteristics in peptide bonds.b)Globular proteins cause scattering of light.c)Proteins contain aromatic groups in certain amino acids.d)All organic macromolecules can be assessed with UV spectroscopy.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for MCAT 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which protein properties allow UV spectroscopy to be used as a method of determining concentration?a)Proteins have partially planar characteristics in peptide bonds.b)Globular proteins cause scattering of light.c)Proteins contain aromatic groups in certain amino acids.d)All organic macromolecules can be assessed with UV spectroscopy.Correct answer is option 'C'. Can you explain this answer?.
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