Why can lipogenesis use almost any organic substrate?
a. lipids, amino acids, and carbohydrates can be converted to acetyl-CoA
b. triglycerides are the most abundant lipids in the body
c. lipids can be converted and channeled directly into the Krebs cycle
d. lipid molecules contain carbon, hydrogen, and oxygen
Answer: a. lipids, amino acids, and carbohydrates can be converted to acetyl-CoA
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On the pH scale, which number has the highest concentration of hydrogen ions?
What will be an ideal response?
The plasma membrane allows nutrients to enter the cell and keeps undesirable substances out of the cell. It also allows wastes to pass out of the cell and keeps valuable cell proteins inside the cell. This property is called ________
A) resistive permeability B) selective permeability C) checking and balancing D) impermeability
How is body weight correlated to thyroid levels?
A) Increased thyroid hormone causes muscles to bulk up, thus increasing weight. B) Increased thyroid hormone causes more food to be stored as fat, leading to weight gain. C) Increased thyroid hormone causes a decrease in BMR, leading to weight gain. D) Increased thyroid hormone causes the body to burn food at a faster rate, reducing the chance that calories from food will be stored as fat and lead to weight gain.
A 22-year-old man has arrived in the emergency room following a motorcycle accident and needs a blood transfusion. He is wearing a medical bracelet that shows he is blood type B negative. Which of the following blood types could be transfused without complication?
A) O negative and B negative B) B positive C) O positive D) AB negative