The molecule can absorb heat from the environment without changing its chemical structure, as will occur when there is a local temperature increase. The molecule will have a higher energy. If the increase in energy is above KT (i.e., the entire environment has not increased its temperature), the molecule will come to thermal equilibrium with the environment around it, and return to its original energy state. Which one of the following is example to this? Select one: a. The absorbance of radiant energy by Melanin pigment in the skin. b. Conversion of 11-cis form of retinal to the all-trans form of retinal upon exposure to light, with a maximum absorbance at 500 nm. c. Thymine-thymine and thymine-cytosine pyrimidine bridges formation upon exposure of DNA to UV-B radiation. d. The translucent to opaque conversion of egg whites when cooked by increasing the temperature.

The molecule can absorb heat from the environment without changing its chemical structure, as will occur when there is a local temperature increase. The molecule will have a higher energy. If the increase in energy is above KT (i.e., the entire environment has not increased its temperature), the molecule will come to thermal equilibrium with the environment around it, and return to its original energy state. Which one of the following is example to this? Select one: a. The absorbance of radiant energy by Melanin pigment in the skin. b. Conversion of 11-cis form of retinal to the all-trans form of retinal upon exposure to light, with a maximum absorbance at 500 nm. c. Thymine-thymine and thymine-cytosine pyrimidine bridges formation upon exposure of DNA to UV-B radiation. d. The translucent to opaque conversion of egg whites when cooked by increasing the temperature.

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

In an electrostatic interaction, the strength of the bond is: Oa) proportional to the charges on the two interacting atoms. b) proportional to the dielectric constant of the medium. c) proportional to the charges of the two atoms and to the dielectric constant of the medium. d) proportional to the Charges of the two atoms and inversely proportional to the distance between the two atoms e) inversely proportional to the distance between the two atoms.
The concept of determining which reactant is limiting and which is in excess is akin to determining the number of sandwiches that can be made from a set number of ingredients. Assuming that a cheese sandwich consists of 2 slices of bread and 3 slices of cheese, determine the number of whole cheese sandwiches that can be prepared from 36 slices of bread and 51 slices of cheese.
3.1 In the picture below label the following: substrate, active site, enzyme, product. Briefly explain what is happening in each picture (figure 6.16 will be VERY helpful). 3.2 Below is a graph showing how enzymes affect the energy of a reaction. Label the following in the graph (reactants, products, activation energy with no enzyme, activation energy with enzymes, time, energy)
Explain using terms related to equilibrium and free energy why a microorganism that gets its energy from a nonspontaneous reaction under standard conditions may actually be able to survive in a specific environment. Be clear and concise in four sentences or fewer..
In the diagram, notice the y-coordinate (energy) of A + B; also notice how C is at a lower y-coordinate. Their difference is the amount of energy during the exothermic reaction. A+B Activation Energy Reaction Progression Energy
1) Based on the composition of fatty acids present in each TAG , predict which TAG (X, Y or Z)has the highest melting point. 2) Based on the composition of fatty acids present in each TAG , predict which TAG (X, Y or Z)you would expect to be a liquid (oil) at room temperature. 3) Based on the composition of fatty acids present in each TAG , predict which TAG (X, Y or Z) you would expect to be solid (fat) at room temperature. 4) Complete hydrogenation of TAG (Y) above would yield a TAG of what fatty acid composition? Enumerate the fatty acid composition with the corresponding percentage. 5) Would the hydrogenation product of TAG (Y) be more like the hydrogenation product of TAG (X) or of TAG (Z)?
A person weighing 150 pounds who is running 1 mile in ten minutes, will burn 100-120 Calories. A 200 lb person uses 135-155 Cal for the same run. A)How much ATP (in grams) is needed for such a workout? The molecular weight for ATP is 507 g/mol. The standard free energy for hydrolysis of the g-phosphate group in ATP is -32 kJ/mol. 1 Cal = 1000 calories, and 1kcal = 4.184 kJ. B)How many grams of glucose is needed to supply energy for this run under aerobicand anaerobicconditions? Assume that we make 30 ATP from one glucose molecule under aerobic conditions. MW(glucose)= 180 g/mol.
(A) how much energy is necessary to heat 7.0 kg of water from room temperature (20 degrees Celsius) to its boiling point? (Assume no energy loss) (b) if electrical energy were used, how much would this cost at 45 cent per kWh?
Some cool enzyme (CE) catalyzes the conversion of compound F to compound A. Which of the following must be true of CE? a) CE can facilitate conversion of compound A into compound F. b) CE binds more tightly to the substrate F than to the product A. c) CE decreases the energy of the transition state between compounds F and A. d) CE facilitates net conversion of F to A whenever F is present.
Diagrams like the one below are used to represent exothermic reactions. For instance, consider burning charcoal (which almost entirely pure element carbon). A=carbon and B=oxygen, when they react they form C=carbon dioxide. A little chemistry vocab: does substance C in the diagram represent a reactant or the product? Activation Energy A+B Reaction Progression Energy
The enzyme E catalyzes the chemical reaction, X ⇌ Y. Imagine two different cases, a) initial concentration of X is low, and b) initial concentration of X is high. Now, if you start adding X, the initial velocity will increase until it reaches its maximum level. In which case, the initial velocity will increase linearly with an increase in the concentration of X? why?
Which of the following statements is a lie? Select one: a. Chemical energy is the energy within chemical bonds. Energy is required for bonds to break while energy is released when bonds form. b. Exergonic chemical reactions release more energy than they absorb and the catabolism of the food in an energy bar serves as an example. c. The many forms of energy used up by cells comes from the breakdown of the chemical energy from the food we digest.