
★ Breathing ...Respiration Quiz
A man has poor night vision and his gums bleed whenever he brushes his teeth. He could improve his health by eating more
A. fish liver oil and eggs
B. carrots and oranges
C. brown rice and carrots
D. milk and fish
Select your answer:

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Which of the following is involved in methylation of homocysteine to methionine?
A. Pyridoxal phosphate
B. Thiamine pyrophosphate
C. Methylcobalamine
D. Flavin adenine dinucleotide