The human body is capable of forming the physiologically active form of vitamin A (retinol), primarily from beta-carotene.

Which of the following vitamins prevents neural tube defects?

Vitamin K is a cofactor known to bind to proteins to regulate blood clotting. Identify another important function, which is vital to young female athletes.

A high quality protein is best described as one that

A high school health teacher would like his 30 students to determine how much walking they do throughout the week and needs your assistance choosing a physical activity assessment method. What do you recommend?

Protein may be a significant source of energy during

Nutrients perform three major functions in the human body. Among these are

People with diseases that affect the pancreas – such as type 1 diabetes, cystic fibrosis, and pancreatitis – may have impaired production and secretion of pancreatic “juices.” How would this affect digestion? In your response, please be specific about the impacts on each macronutrient. (6-8 sentences)

Phenylketonuria (PKU) is a recessive genetic disorder caused by a deficiency of phenylalanine hydroxylase, the enzyme that converts phenylalanine to tyrosine. Untreated PKU is characterized by a build-up of phenylalanine and its metabolites, in the blood and eventually brain, which can lead to brain damage. Nutritional management of PKU involves a low protein (and therefore low phenylalanine) diet, and supplementation with a phenylalanine-free protein supplement. However, phenylalanine can also accumulate in the blood (and therefore brain) when someone with PKU becomes sick and/or has a poor appetite. Why might illness and/or poor appetite in a person with PKU cause the accumulation of phenylalanine in the blood/brain? (hint: consider your response to question #10 above) (3-6 sentences)

What are the main structural elements of the plasma membrane, and how are these elements associated with key functions of the plasma membrane? (4-6 sentences)