Which of the following is true regarding B vitamins and homocysteine metabolism?
a. Folate catabolyzes homocysteine
b. Biotin supplements reduce blood homocysteine levels
c. Excessive homocysteine intake reduces vitamin B12 absorption
d. High blood homocysteine levels correlate with reduced incidence of colon cancer
e. High folate levels are necessary for the synthesis of homocysteine
ANS: A
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If your weight 250 pounds and are initiating an effort to lose weight in a healthy way, how much weight should you lose over a six-month period, according to the National Institutes of Health?
A. 12.5 pounds B. 20 pounds C. 25 pounds D. 50 pounds
Phosphocreatine (PCr) is an energy-rich compound found in ________ tissue.
A. liver B. adipose C. kidney D. muscle
Brittany and Richard have noticed that their friend Mandy has lost a significant amount of weight from the fall to the spring semester. People are starting to comment on how thin she looks. Brittany has noticed that Mandy is only eating an orange for breakfast, a small bowl of salad with no salad dressing and a small piece of grilled chicken for lunch, and a cup of plain yogurt for dinner. Richard has been going to the gym with Mandy most days of the week. He enjoys lifting free weights, and Mandy usually runs on the treadmill for 45 minutes and then does 15 minutes of core exercises. In addition Mandy has shared with Brittany that she has not had her menstrual period for 4 months.
Mandy has also expressed that she is frustrated because people are making comments about how thin she looks and consequently has not gone to as many parties or social gatherings because she feels so uncomfortable. When Mandy does finally decide to seek treatment, what type of therapy would be important for her to receive? A) Physical rehabilitation to help improve her weight and bone density B) Psychotherapy to help treat the mental and emotional aspects of the disorder C) Nutritional rehabilitation and counseling D) Family therapy E) All of the above forms of therapy are important in treating an eating disorder
Arrange the energy systems anaerobic glycolysis, creatine phosphate, oxidative phosphorylation of carbohydrate, and oxidative phosphorylation of fat in order from the slowest to the fastest based on the rate of ATP production: …..A…..B…..C…..D….. slowest fastest Creatine phosphate
A) A - slowest B) B - slow C) C - fast D) D - fastest