Adenine cytosine guanine thymine Question 24 (Mandatory) (2...

adenine cytosine guanine thymine Question 24 (Mandatory) (2 points) Listen A man interested in losing weight and increasing his fitness followed a strict diet exercise regimen for three months. Body fat analysis indicated that the man had 7 kg (about 15 pounds) of fat by following this exercise and diet program. What the most likely form by which the fat left his body? It was converted to heat, which was released to the environment. It was released as $CO_2$ and $H_2O$. It was broken down to amino acids and eliminated from the body. It was converted to ATP, which weighs much less than fat.

Transcript

00:01 Hello, this is biology instructor nicole.

00:03 Take a look at your question.

00:05 So what exactly happens when someone loses weight? where does that mask go? so if your friend lost 10 kilograms or 22 pounds of fat on a regimen of strict diet and exercise, how did the fat leave their body? how did the fat actually leave their body? was it released as co2 and h2o, converted to heat and then released? was it converted to atp, which weighs much less than fat? was it broken down to amino acids and eliminated from the body? was it converted to urine and eliminated from the body? all right.

00:38 So first of all, let's recognize that they actually lost mass.

00:43 So to have a loss of mass, we actually have to have matter leaving the body.

00:50 So actual atoms must leave the body.

01:02 First matter is all matter is going to be in the form of atoms.

01:06 So our first answer choice actually has some atoms being released from the body.

01:13 So this is likely a good choice.

01:15 The second choice was converted to heat and released is not acceptable because it doesn't show a reduction of matter.

01:24 It shows energy.

01:25 Was converted to atp, which weighs much less than fat.

01:29 Okay, even if this was the case, if all that atp was still in the body, it would have to have the same mass because of the conservation of mass.

01:39 There would just be more atp molecules in the body.

01:44 So this is not going to actually reduce the person's mass.

01:50 Next choice, it was broken down into amino acids and eliminated from the body.

01:54 Well, we have the elimination, but amino acids are the monomer or building block of protein.

02:04 And the situation we have here specifically states that this friend lost fat.

02:12 So it cannot be this either...

Question

Please give Ace some feedback