BIO question!!!

[lol105]

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Since OAT and DAT are tested on the same science material (minus physics), I was looking at the sample OAT test:


https://www.ada.org/oat/oat_sample_test.pdf

On the sample OAT test, I do not know how to approach #5 (Answer = C) on the natural science section. Can someone kindly explain the answer for me?

 

[Vaiyoretto]

Since lysosomes break down proteins into amino acids, the number of proteins would decrease and the amount of amino acids would increase over time.

 

[AlbinoPolarBear]

From the graph, we can see that the cell particles are breaking down the protein into amino acids. Look at the graph, the amino acid content is increasing at the expense of protein content.

So from the list, we have to choose an option where the cellular components contain proteases.

Ribosome - makes proteins out of amino acids, so this is not right
Lipid vacuoles - has nothing to do with protein degradation
Lysosome - contains digestive enzymes such as proteases, amylase, lipase, etc
Food vacuoles - has nothing to do with protein degradation
Mitochondira - converts glucose to ATP, has nothing to do with protein degredation.

So from that list, only 2 has anything to do with protein synth/degradation, and we choose the option where protein degradation (with proteases) is possible.

 

[lol105]

oops i read the question wrong! Now it makes sense.

Thank you for your clarification 😀

 

[ammarm]

Since OAT and DAT are tested on the same science material (minus physics), I was looking at the sample OAT test:


https://www.ada.org/oat/oat_sample_test.pdf

On the sample OAT test, I do not know how to approach #5 (Answer = C) on the natural science section. Can someone kindly explain the answer for me?

just think about the function of lysosomes: are responsible for digestion of proteins (generally, cell waste) and therefore it will break down the radioactive proteins.. the increase in amino acids could be due to the presence of ribosomes where protein synthesis occurs.. those amino acids might not have got their 3D structure so the lysosomes cannot identify to break them down.. this is what i was thinking.. hope tht helps..