Which of the following statements concerning lecithin is not true?
a. It is a major constituent of cell membranes.
b. It is made by the liver from scratch.
c. It is an essential nutrient.
d. It is often added to foods as an emulsifier.
c
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Muscles contract when calcium ions are released from the sarcoplasmic reticulum of the muscle cell
Indicate whether the statement is true or false
Which of the following statements about popular diets is not true?
A. They often use personal testimonials from famous people to promote their product. B. They often recommend expensive supplements or meals. C. They promote quick weight loss that ends up being primarily water and lean muscle mass. D. They help people make permanent changes in eating habits and behaviors.
The total number of kilocalories in a snack that contains 10g carbohyrdate, 2g protein, and 5g fat is _____ kcal.
a. 17 b. 68 c. 93 d. 153
Hemoglobin is an iron-containing protein
Indicate whether the statement is true or false