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biochem
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| MysticStardust |
Hi all. I'm desperate. We have to do corrections for our bio test, so we have to write the right answer and then give explanation for it. I have no idea how to answer two questions so I was wandering if any of you could help me...PLS????????:(
1.A radioactive element is sometimes used to trace the pathway of chemical reactions in the cell. If newly synthesized proteins are radioactive, the radioactive element used could be
a. sodium
b. chlorine
c. nitrogen
d. potassium
2. Which of the following coumpouds release the largest amount of energy when one gram of the substance is metabolized to CO2 and H2O?
a. neutral fat
b. protein
c. carbohydrate
d. nucleotide
Thank you for any help you could give me;) :D |
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| Dmatrox |
i dont know what you mean when you say you have to do corrections for the test, does that mean all the answers are wrong?
1. i dunno
2. neutral fat |
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| PhaseFour |
| 1) nitrogen, since its found in amino acids, which make up prot |
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| starglider |
| quote: | Originally posted by MysticStardust
Hi all. I'm desperate. We have to do corrections for our bio test, so we have to write the right answer and then give explanation for it. I have no idea how to answer two questions so I was wandering if any of you could help me...PLS????????:(
1.A radioactive element is sometimes used to trace the pathway of chemical reactions in the cell. If newly synthesized proteins are radioactive, the radioactive element used could be
a. sodium
b. chlorine
c. nitrogen
d. potassium
2. Which of the following coumpouds release the largest amount of energy when one gram of the substance is metabolized to CO2 and H2O?
a. neutral fat
b. protein
c. carbohydrate
d. nucleotide
Thank you for any help you could give me;) :D |
Yep, the nitrogen answer is right as mentioned above. As the for the second one, fats release the most energy per unit mass compared to proteins and carbohydrates. I'm not exactly sure why from a biochemical standpoint, probably something to do with how they're brought into the Krebs cycle. If they release more energy it presumably means they have higher energy electrons in their constituent fatty acids. |
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| MysticStardust |
thanx guys
I didn't get the whole test wrong, these are 2 questions are from corrections we had to do for the test, they are 2 questions out of 10 which most of the people got wrong in my class so we have to re-do them by writting out the write answer and why that is the answer...so yeah |
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