Question

i. Which of the following is true for ALL B vitamins? They all function as coenzymes. They cannot be synthesized in the human body. They all play critical roles in energy metabolism. They are readily destroyed during food storage and cooking. 2. All of the following are recommended practices to preserve vitamins in food EXCEPT: use minimal water and time to cook vegetables. purchase milk in opaque containers to prevent light from destroying riboflavin. refrigerate fruits and vegetables to slow the breakdown of some vitamins. remove the peel from fruits and vegetables. 3. Which choice only includes vitamins that can have toxic effects if consumed in excess? vitamin Bs, vitamin B12, folate niacin, vitamin B, vitamin C folate, niacin, vitamin B, vitamin B, 2 riboflavin, niacin, vitamin Bs 4. Which of the following is NOT a typical cause of a vitamin deficiency? increased vitamin losses decreased vitamin synthesis increased vitamin requirements decreased vitamin absorption 5. Which statement about coenzymes is FALSE? Some enzymes require a coenzyme to carry out their function or activity. A coenzyme attaches to the enzyme to form an active complex All B vitamins function as coenzymes. Start: 12:06 PM Type here to search

Answer 1

1- (D) they are readily destroyed during storage and cookig bcz  they are water soluble and delicate.

2-(D)

3-(B)

• Vitamin B3 (niacin). When taken in the form of nicotinic acid, niacin can lead to high blood pressure, abdominal pain, impaired vision, and liver damage when consumed in high doses of 1–3 grams per day.
• Vitamin B6 (pyridoxine). Long-term overconsumption of B6 can cause severe neurological symptoms, skin lesions, sensitivity to light, nausea, and heartburn, with some of these symptoms occurring at intakes of 1–6 grams per day.
• Vitamin C. Although vitamin C has relatively low toxicity, high doses of it can cause gastrointestinal disturbances, including diarrhea, cramps, nausea, and vomiting. Migraines can occur at doses of 6 grams per day