Rat Experiment 5.1, Group 2, 3rd Hour by Defne Karabulut

2 how much of the protein that is eaten, excreted, and how much becomes a part of protein in the body?

4023310 — 2024-10-02 15:02:13 UTC

The amount of protein that is excreted out depends on how much protein you eat if you were to eat 5g of protein you would excrete 40-50% of it and your body would keep 50-60% of it and use it to repair build and grow your body/cells.

3rd Step

40192_ — 2024-10-02 15:04:43 UTC

What does 'Built up' mean?

The term 'Built up' means that your body is using food to repair your body, help your body grow, and help to replace old cells with new cells. For example, when the rats were fed, at the end, most of the food (57.5%) of the protein went to their bodies.

4th step

2024-10-03 02:49:32 UTC

Most of the nitrogen found in rats are in their bodies. This makes sense because the organs with the least nitrogen isotope concentration are skin and muscles not part of the main body. The ones that have the most are blood plasma and kidney which are in the main body.

1- First step of the experiment- Molly

4030216 — 2024-10-03 14:32:45 UTC

The first step of the rat experiment...

the first step of the rat experiment was to feed them something different, so the scientists conducting the experiment fed them 23mg of amino acids built into their daily diet. and the rats contained the same weight throughout the experiment.

Second step

4023310 — 2024-10-03 14:44:19 UTC

We collected their urine and feces over three days and analyzed them for the isotopes

New proteins are proteins that are created in a lab with isotopes so they are classified as isotopes proteins and old proteins are proteins that we get from food that contain protein like meat, eggs, nuts, and fish.

1 - Mia

4052518 — 2024-10-03 14:46:02 UTC

What did scientists believe happened to nitrogen before the experiment?

The scientists believed that the nitrogen came from two places. They first thought that most of the nitrogen came from the rat's urine and that it came from the proteins they ate. That would mean very little nitrogen would go to the rat's cells. The other scientists believed that the new proteins were used to help make new proteins for the body and that the proteins coming from the urine would be old proteins.