Questions from Students for Exam 1

Joseph Dixon ♦ February 12, 2018 ♦ Leave a comment

February 12, 2018   For Exam 1   Questions from Students:

Q: I keep trying to calculate the total kcals for the questions you gave us but keep coming up with the wrong total. everything except for the fat gets times by 4 correct? I keep coming up with 174 instead of 234? What could I be doing wrong?

ANSWER: For question #28 on the practice exam:

Hi,   In this question I included alcohol which I didn’t stress this semester.  The Atwater number for alcohol is 7!  so it is like this:

20 x 7

18 x 4

2 x 9

1 x 4

adds up to 234 Kcal per drink!

Q: Hi professor Dixon, For the health and nutrition exam do we have to know the functions of the individual parts of the G.I. tract? Also, which chemicals of the G.I. tract do we have to know? I know you mentioned two of them in class and said the other one wasn’t necessary but I forget the names of the first two. Thank you,

Answer: You really do not have to know too much on the GI tract.  More for glucose than anything.  The two I mentioned are Secretin and Gastrin.

Q: Dear Professor Dixon,  The last slide covered in class on Friday was RDA for Protein Cont. with totals for pregnancy, etc. Does this mean protein complementation, daily recommendation for adult vegetarians, plant protein, and regulation of fluid balance, etc will not be on the exam. The review notes touch upon soy and toxicity, all past the coverage in lecture. Should we review the slides at home or stop at slide 83 about RDA for the exam? Thank you!

Answer: Yes, we did not get past the RDA for protein so that’s where the exam stops – we will cover nutritional aspects of protein next class.  (How the RDA was calculated is very important).

Q: Hello professor, quick question. Approximately how many of the 50 questions on the exam will be based on the Dixon chapters mentioned on the syllabus? Are there any particular chapters we should spend more time on?

ANSWER: Hi,  All of the material is from the lectures and the textbook when I specifically point it out.  The Dixon chapters just give extra information if you wish to read about it.  Almost all of the Dixon chapters are wider discussions of something from the lectures.

Q:   I had a question regarding Tolerable Upper Limit Values and how they are determined? Is it using the inverted U-curve? I understand how RDA’s are determined by adding 2 standard deviations to the EAR, is the same done for UL, by adding standard deviations to the RDA?

Answer: Thank you for the question.  The UL were determined from extensive individual toxicity reports etc.  The committee that sets the RDA debates what the UL should be.  There is really no statistical analysis like for the RDA.  We have to just take the committee’s recommendation.

Q: Dear Prof. Dixon, I have been looking all over the notes and textbook for how many total kcals of glycogen are stored in humans, but can not find it. I know that in the liver it is 570 kcals and in muscle it is 2000 kcals, maybe the answer is right in front of me and I can not see it, but could you please explain what the answer is? Thank you!

Answer: You are so close –  2000 for muscle and 570 (~600) – Add together =  2600 ( just a very vague average) but the best we have as we can’t cut people up and check!