00:01
All right, so for this question, we are given a definition and a description, which i guess is kind of very similar things.
00:07
And from this description, we have to deduce which of the following answer options is referring to this description.
00:15
So what we are told is we are looking at chemical and physical aspects of the body.
00:26
The chem and physical aspects of the body are being kept within a tolerable range.
00:38
We'll just write within range.
00:40
We're doing a little bit of shorthand here.
00:43
So the chemical and physical aspects of a body are within a tolerable range.
00:48
And this is being accomplished via controlling mechanisms in the body.
00:54
So that is what we are told as far as the description.
01:00
I'm just going to abbreviate with control.
01:02
For controlling mechanisms.
01:06
Okay, and let's look at our answer options to choose from.
01:09
So a, we have positive feedback, and i'm just going to create a plus sign for this.
01:17
Positive feed.
01:19
We have b, which is going to be, you guessed it, negative feedback.
01:28
Let's write that a little cleaner, negative feedback.
01:32
You're going to have answer option c, which is going to be homeostasis.
01:38
I'll abbreviate with homeo for interoption c.
01:45
Answer option c, sorry.
01:47
And then answer option d is going to be metastasis.
01:54
Okay.
01:56
So essentially what we're talking about for this description, it's pretty self -explanatory.
02:01
So we have chemical things, such as we can look at ph, you can look at the concentration of different substrates in the body that have important physiological.
02:13
Obligations or actions as they perform.
02:17
And then we have physical things, which is very similar as well.
02:20
We can look at a host of different things for either one.
02:23
And these are kept within the range via controlling mechanisms within our body.
02:28
So what is positive feedback referring to? and does this fit the bill? well, positive feedback is actually a mechanism within itself.
02:36
Well, a mechanism can be a positive feedback one.
02:40
This is a mechanism where we have an increased stimulus or an increased output of something.
02:51
The body will then increase an action because of it...