What is the major lipid found in membranes?
A. steroids
B. cholesterol
C. triglycerides
D. phospholipids
E. saturated fatty acids
D. phospholipids
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Each cell is able to maintain an internal environment within a range that favors survival. This condition is called ___________.
A. metabolism B. homeostasis C. physiology D. adaptation E. evolution
What key words does the question contain and what do they mean?
What will be an ideal response?
An incomplete digestive system is seen in:
a. flatworms only b. cnidarians only c. both roundworms and annelids d. both cnidarians and flatworms e. mollusks
Cystic fibrosis is a recessive disorder. If a couple, each of whom is heterozygous for the CFTR mutation, have
children, what is the probability that they will have a child with cystic fibrosis?
a. 0% b. 25% c. 50% d. 75% e. 100%