Select all that apply Which of the following processes is entropy-driven? This is a multi-select question.the assembly of the DNA double helix.the folding of a water-soluble globular protein.the assembly of a lipid bilayer.the dissolving of NaCl crystals in water.The diffusion of CO₂ down its concentration gradient across a lipid membrane.

Entropy is the degree of randomness or disorder in the system. Entropy increases if the system…

Answered: Which of the following processes is…

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter4: Energy And Metabolism

Section: Chapter Questions

Problem 8SQ

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Which reaction is most likely to have a positive value for ∆G? Synthesis of a polymer from monomers Hydrolysis of ATP Ã ADP Payoff phase of glycolysis Diffusion of ions from high to low concentration
The production of a hydrogen ion concentration gradient powers the production of ATP in both photosynthesis and cellular respiration. 2,4-Dinitrophenol (DNP) is an organic compound that 'undoes' the hydrogen ion concentration gradient without the production of ATP. It does this by increasing the membrane permeability to hydrogen ions. One use of DNP is as a herbicide.For a brief period in the 1930s, DNP was marketed as a diet pill. Because DNP prevents the production of ATP, the human body will begin to use alternate forms of energy. The result is an increase in the metabolism of fats in the body, thus reducing total body fat. In the presence of DNP, the energy that normally would be converted to ATP for use in the cells is converted to heat instead, causing dangerously high body temperatures.DNP is classified as an illegal substance in Canada and the U.S. although it is still marketed as a commercial chemical. In recent years, several deaths have been reported, primarily in the…
The capacity to do work best defines: a metabolic pathway. entropy. kinetic or potential energy. a chemical equilibrium. thermodynamics.
Which of the following would be the most thermodynamically unfavorable membrane lipid activity membrane? (which is the hardest to do / least likely to occur) lateral diffusion rotation transverse diffusion (flip-flop) association with cholesterol
Which of the following processes will result in a direct net increase of ATP concentration? Group of answer choices Anabolic chemical pathways Primary Active transport dehydration synthesis Glycolysis
The proton motive force is made as an example of what type of molecular movement? Facilitated (gated) Facilitated (channel) Active Passive
Which membrane function makes them able to accommodate the electron transport chain at the inner membrane of the mitochondrion? responding to external signals selectively permeable barrier scaffold for biochemical activities compartmentalization
This molecule:•contains potential energy•is used to convert CO2 into glucose•has an unstable triphosphate tail•is the main energy source for cellular “work”
Both thiopental and pentobarbital have been used in the lethal injections. Pentobarbital has been preferred over thiopental, but it seems constantly to be in a shortage. There have been complains against the use of thiopental. Based on the chemical structure and interaction with the two main environments of a biological system (water and lipids) which one will get into the cell and distribute faster? Which one will stay longer into the system and for what reason? In your explanations please refer to the stuctures provided below. CHCH, CHCH,CH,CH, CH,CH, CHCH,CH,CH, CH, HN Thiopental Pentobarbital
ALL biosynthetic reactions require which of the following metabolites(s)? NADPH Glucose 6-P High energy bonds (e.g. ATP, UTP, GTP) A and B B and C
Stearic acid is an 18-carbon fatty acid. If a single molecular of stearic acid is within the cytosol of the cells: Describe the process by which stearic acid would be metabolised, beginning the molecule in the cytosol of the cell, ending with the creation of ATP, and assuming the cell has sufficient oxygen for all reactions to take place Showing all working, calculate how many ATP molecules could be generated from a single molecule of stearic acid in the cytosol of the cell
Diatomic oxygen (O2) exhibits which of the following membrane transport movements? it is not able to cross the membrane by passive transport, because it is big, polar, and inorganic it is not able to cross the membrane by active transport, because it is big, polar, and inorganic it is able to cross the membrane by facilitated diffusion, because it is small, polar, and organic it is able to cross the membrane by active transport, because it is big, nonpolar, and organic it is able cross the membrane by simple diffusion, because it is small, nonpolar, and inorganic

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