When arthropods molt, they may change in four of the following ways. Which one is the exception?
A. Body form and maturity
B. Sex
C. Body size
D. Eating habits
E. Sensory structures
Answer: B
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Which of the following is an accurate description of the plasma membrane?
A. One layer of phospholipids with a number of proteins embedded within B. Two layers of proteins with a few phospholipids embedded within C. Two layers of phospholipids with a number of proteins embedded within D. One layer of proteins with a few phospholipids embedded within
François Jacob and Jacques Monod discovered ________
A) a mechanism for how proteins regulate gene activity B) the degree of genetic similarity between humans and chimpanzees C) the Hox cluster of homeotic genes D) evolutionary changes in the timing and rate of developmental processes E) the parallel between the order of regulatory genes on a chromosome and the location in the embryo where these genes are expressed
The four main catagories of large biological molecules present in living systems are
a. Proteins, DNA, RNA, steroids b. Monosaccharides, lipids, polysaccharides, and proteins c. Nucleic acids, carbohydrates, monosaccharides, and proteins d. RNA, DNA, proteins, and carbohydrates e. Proteins, nucleic acids, polysaccharides, and lipids
At __________, the fusion of two gametes produces a(n) __________.
Fill in the blank(s) with the appropriate word(s).