What are the advantages of having cell membranes that contain phospholipids rather than just lipids?
Phospholipids are amphipathic—they contain both nonpolar and polar portions. In this way, phospholipids can interact with water or other hydrophilic substances on their polar end and hydrophobic substances such as lipids on the other end (fatty acid portion). They can form a bilayer that acts as a barrier between the inside and outside of the cell (because of the hydrophobic interior) but still allows communication between the inside and outside (because of the hydrophilic exterior).
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Which is the largest abdominal organ in the body?
A. kidneys B. liver C. small intestine D. large intestine
Describe familial hypercholesterolemia.
What will be an ideal response?
High-fructose corn syrup is _____ percent fructose
a. 25 to 41 b. 42 to 55 c. 56 to 65 d. 66 to 85 e. 86 to 100
The most common symptoms associated with Clostridium botulinum intoxication are ________.
A. double vision, respiratory failure, and paralysis B. watery diarrhea, nausea, and vomiting C. bloody diarrhea, abdominal cramps, and acute kidney failure D. diarrhea, nausea, chills, fever, and headache