Answer:
27 min
Explanation:
By the Michaelis-Menten Kinetics Model, the initial velocity of the enzymatic reaction is given by:
![v0 = \frac{vmax [S]}{Km +[S]}](https://tex.z-dn.net/?f=v0%20%3D%20%5Cfrac%7Bvmax%20%5BS%5D%7D%7BKm%20%2B%5BS%5D%7D)
where vmax is the maximum velocity, [S] is the substrate concentration and Km is the equilibrium constant. The maximum velocity is directly proportional to the enzyme concentration.
So, for 12μmol of the product formed in 9 min, the velocity is also:
v0 = 12/9 = 1.33 μmol/min
For [S] 1,000 times higher then Km, Km can be unconsidered in the equation, so:
![v0 = \frac{vmax[S]}{[S]}](https://tex.z-dn.net/?f=v0%20%3D%20%5Cfrac%7Bvmax%5BS%5D%7D%7B%5BS%5D%7D)
v0 = vmax
vmax = 1.33 μmol/min
If the enzyme concentration decreases by three, the maximum velocity will also decrease by three, so it will be: 0.443μmol/min. Km continues the same, and [S] will be multiplied by 2, so Km can still be unconsidered. So:
v0 = vmax
v0 = 0.443 μmol/min
Then,
0.443 = 12/t
t = 12/0.443
t = 27 min
Answer:
B. 4 ham slices
Explanation:
A chemical reaction involves one or more substances known as reactants combining chemically to give one or more substances known as products.
Reactants in chemical reactions combine in definite mole or mass ratios to give products. Therefore, when one substance is present in excess of what is required to combine with another to form products, that substance is known as the excess reagent. The other substance which is present in a smaller amount and which when used up, the reaction stops is known as the limiting reagent.
From the illustration of the sandwiches in the question, the recipe for one sandwich represents the chemical equation of a reaction. The equation form is given below:
2 cheese slices + 1 ham slice + 2 bread slices ---> 1 sandwich
The ratio of the reactant is 2 : 1 : 2
From the available ingredients, 12 cheese slices, 10 ham slices, 12 bread slices.
12 cheese slices will require 6 ham slices and 12 bread slices to produce 6 sandwiches.
However, since there are 10 ham slices, 4 ham slices will be left over unused. This is the excess or leftover reactant.
Answer:
true love encompasses a range of strong and positive emotional and mental states, from the most sublime virtue or good habit, the deepest interpersonal affection and to the simplest pleasure. true love doesn't mean spending every minute of every day together; it means feeling secure enough that you don't feel jealous or needy if your partner spends time with his or her friends. true love means that you have an unwavering, unbreakable and unparalleled fondness and devotion for your partner.
hope this helps :)
Answer:
The answer to your question is 0.62 atm = 62.82 kPa = 471.2 mmHg
Explanation:
Data
P = 0.62 atm
P = ? kPa
P = ? mmHg
Process
1.- Look for the conversion factor of atm to kPa and mmHg
1 atm = 101.325 kPa
1 atm = 760 mmHg
2.- Do the conversions
1 atm ----------------- 101.325 kPa
0.62 atm ------------ x
x = (0,62 x 101.325) / 1
x = 62.82 kPa
1 atm ------------------ 760 mmHg
0.62 atm ------------ x
x = (0.62 x 760)/1
x = 471.2 mmHg
Answer:
the maximum energy available for pumping a mole of glucose into the cell = 3190J
Explanation:
The detailed steps and appropriate derivation from the Vant hoff Isotherm equation is as shown in the attachment.