Which food can cause the lower esophageal sphincter to relax?
A) milk
B) banana
C) chocolate
D) oatmeal
C
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Amino acids (or parts of their carbon skeletons) that can be converted to pyruvate or enter the citric acid cycle directly are called ________.
A. glucogenic amino acids B. non-essential amino acids C. essential amino acids D. ketogenic amino acids
As plants like celery and carrots mature, their cell walls increase in _____ concentration, resulting in a tough, stringy texture
a. cellulose b. gums c. hemicellulose d. lignin e. pectin f. all of the above answers are correct
Which of the following nutrients are required in higher amounts during pregnancy due to their roles in the synthesis of red blood cells?
a. Protein and chromium b. Folate and vitamin B12 c. Calcium and vitamin A d. Vitamin E and vitamin C
One purpose of genetic engineering is to: a. remove unwanted nutrient levels from foods
b. make crops resistant to diseases. c. clone animals that are raised as sources of meat. d. kill all pests that attack specific plants. e. mix genes from different members of the same species.