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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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%
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