00:02
In this part, we are given a multiple test question.
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So basically for question number one, the correct answer for this one is we have the endergonic reactions.
00:17
Always remember that this is a type of reaction which occurs in the presence of additional driving force, like the heat.
00:25
And the delta g for such reaction is always positive.
00:28
So the right option here is that the energy is needed for such a reaction to occur.
00:35
Second, always remember that a sodium potassium pump is an antiporter of transport protein in which one molecule moves inside the membrane and another molecule is moved out in a sodium potassium pump.
00:52
So seven molecules of atp will pump 21 molecules out and 14 molecules of potassium 21 in sodium and 14 in potassium.
01:03
So basically here the correct option for number two is 21 sodium ions out and 14 potassium in.
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For question number three, always remember that an enzyme is a bio -catalyst that speeds up the biochemical reaction.
01:27
So enzymes work by reducing the activation energy.
01:30
So all the options are are true, except basically except letter b.
01:39
That is a change in ph can cause an enzyme to be inactivated.
01:45
For question number four, what do the process of active transport and the facilitated diffusion have in common? so basically the common of facilitated and active transport, definitely the active transport is the transportation of molecules from a region to a low concentration.
02:02
To the area of higher concentration.
02:05
And facilitated diffusion is the transportation of molecules from a region of low concentration to the area of high concentration.
02:14
So for question number four, the correct answer for this one is that both need energy to move materials across the membranes that would be letter a.
02:24
For number five, we need to identify which of the following is an example of a potential energy.
02:31
So basically here, the example of potential energy, as we can look at the option, definitely a glass of milk, sneakers bar, apple growing on a tree, all are examples of potential energy that would be letter d...