Question
In: Chemistry
Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation...
Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP. In this way, luciferase can test for the presence of life. The coupled reactions are
1.2.luciferin+O2ATP⇌⇌oxyluciferin+lightAMP+PPiΔG∘=−31.6 kJ/mol
If the overall ΔG∘ of the coupled reaction is -5.50 kJ/mol , what is the equilibrium constant, K, of the first reaction at 23 ∘C ?
Solutions
queen_honey_blossom answered 1 year agoRelated Solutions
Light of a given wavelength is used to illuminate the surface of a metal, however, no...
Light of a given wavelength is used to illuminate the surface of
a metal, however, no photoelectrons are emitted. In order to cause
electrons to be ejected from the surface of this metal you should:
a. use light of the same frequency but decrease its intensity b.
use light of a higher frequency c. use light of the same frequency
but increase its intensity d. use light of a longer wavelength
Consider the various frequencies of the three photons emitted...
1. Fireflies emit light across the visible spectrum, but the peak intensity of their emission is...
1. Fireflies emit light across the visible spectrum, but the
peak intensity of their emission is around a wavelength of 550 nm.
So let’s make the approximation that all of the light emitted by a
firefly has a wavelength of 550 nm. (a) A typical flash of light
from a firefly lasts for about 100 ms and has a power of 1.2 mW.
How many photons are emitted in each flash. (b) An “electron volt”
(eV) is a unit of...
Blue light of wavelength 470 nm is used to illuminate a pair of narrow slits that...
Blue light of wavelength 470 nm is used to illuminate a pair of
narrow slits that are 0.020 mm apart and 1.60 m from a screen.
(a) What is the angular position of the second-order minimum
(dark spot)?
(b) What is the distance on the screen between the central
maximum and the second-order
minimum?
(c) The reason there is a dark spot at this location on the
screen is because light from one slit has
to travel further than light...
Suppose you illuminate two thin slits by monochromatic coherent light in air and find that they...
Suppose you illuminate two thin slits by monochromatic coherent
light in air and find that they produce their first interference
minima at \pm 35.09 degrees on either side of the central bright
spot. You then immerse these slits in a transparent liquid and
illuminate them with the same light. Now you find that the first
minima occur at \pm 19.48 degrees instead.
a) What is the index of refraction of this liquid?
Express your answer using four significant figures.
Light from a helium-neon laser (? = 633 nm) is used to illuminate two narrow slits....
Light from a helium-neon laser
(? = 633 nm) is used to illuminate two narrow slits.
The interference pattern is observed on a screen 3.3m behind the
slits. Eleven bright fringes are seen, spanning a distance of 54mm
.
What is the spacing (in mm) between the slits?
Light from a helium-neon laser (?=633nm) is used to illuminate two narrow slits. The interference pattern...
Light from a helium-neon laser (?=633nm) is used to
illuminate two narrow slits. The interference pattern is observed
on a screen 3.1mbehind the slits. Thirteen bright fringes are seen,
spanning a distance of 50mm .
What is the spacing (in mm) between the slits?
Express your answer using two significant figures
25) Am enzyme-catalyzed reaction proceeds at a faster rate than an uncatalyzed reaction because the enzyme...
25) Am enzyme-catalyzed reaction proceeds at a faster
rate than an uncatalyzed reaction because the enzyme lowers the
difference in free energy between the reactants and the
products.
a. True
b. False
What is one of the main purposes of IP version 6 (IP Next Generation)? a. Allows...
What is one of the main purposes of IP version 6 (IP Next
Generation)?
a. Allows for more applications
b. Allows for more IP addresses
c. Allows for more Class C addresses
d. Creates a connection-oriented mode for IP
38. Address 205.169.85.0 is assigned by ICANN as a corporate IP
address. Which of the following statements is true:
a. It is a class C address
b. It is a class B address
c. It is a class A address
d....
Light Sweet Petroleum, Inc., is trying to evaluate a generation project with the following cash flows:...
Light Sweet Petroleum, Inc., is trying to evaluate a generation
project with the following cash flows:
Year
0 –$ 38,400,000
1- 62,400,000
2 – 11,400,000
a-1 What is the NPV for the project if the company requires a
return of 10 percent?
a-2 Should the company accept this project? Yes or No?
b. The project has two IRR'S, namely _____ percent and _____
percent, in order from smallest to largest
Light Sweet Petroleum, Inc., is trying to evaluate a generation project with the following cash flows:...
Light Sweet Petroleum, Inc., is trying to evaluate a generation
project with the following cash flows:
Year
Cash Flow
0
–$
38,000,000
1
62,000,000
2
–
11,000,000
What is the NPV for the project if the company requires a return
of 11 percent?
Should the company accept this project?
Fill in the blank: This project has two IRR's namely, ______
percent and _______ percent, in order from smallest to largest.
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