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4 years ago

Oxygen and carbon dioxide pass through the plasma membrane by _____.?

1 answer:

5 0

<span>Passive diffusion is the process through which oxygen and carbon dioxide pass through the plasma membrane. This process is unlike other forms of transport within the cell, because it is created by increased entropy in the system rather than cellular energy.</span>

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20 PTS!!!+ PROMISING BRAINLIEST Why are coral reefs given the nickname “rain forests of the sea”?

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what is the difference between a substrate and a reagent and which term would you use when describing the active site?

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A substrate is a molecule upon which an enzyme acts. The substrate is changed by the reaction and, in this case, two products are made. A reactant and substrate have the same meaning. The term reactant is more often used in chemistry. Biology Science

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3 years ago

How far away can a proton and an electron be from each other, such that they still exert an electric force on each other of magn

pogonyaev

Answer:

$\sqrt{ \frac{2.3 *10^{-28} }{F} }$

Explanation:

Total force = Force due to gravity + Force due to charges

Total force = $\frac{GMm}{r^{2} } + \frac{kQq}{r^{2} }$

r is the separation between particles.

Charge of a proton(Q) = - (charge of an electron(q) ) = 1.6 * 10^-19 coulombs

Mass of a proton (M)= 1.67×10^-27 kilograms

Mass of an electron (m) =9.11 × 10^-31 kilograms

G=6.67 ×10^−11 N⋅m^2/kg^2

k=8.99 * 10 ^9 N.m^2 / C^2

Plugging in values:

Force due to gravity= (6.67 *10^−11)(1.67 * 10^-27)*(9.11 * 10^-31) /r^2 =1.01 * 10^-67 / r^2

Force due to charges : (8.99 * 10 ^9)*(1.6 * 10^-19)*(1.6 * 10^-19) / r^2 = 2.3 *10^-28 / r^2

We can observe that force due to charges is too large as compared with force due to charge. The ratio of Fc to Fm is 2.3* 10^39. It means that we can ignore force due to gravity.

Total force = Force due to charges.

F = 2.3 *10^-28 / r^2

r = $\sqrt{ \frac{2.3 *10^{-28} }{F} }$

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4 years ago