Sugars dissolve well in water because of water's ______.
A. polarity
B. ionic bonds
C. hydrophobic exclusion
D. cohesiveness
A. polarity
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The chromosome theory of inheritance states that
A) genes are located on chromosomes. B) chromosomes replicate before cell division. C) alleles of a gene segregate during cell division. D) chromosomes consist of DNA. E) different chromosomes assort independently of one another.
All of the following are typical components of the plasma membrane of a eukaryotic cell except
A. Glycoproteins B. Cytochromes C. Cholesterol D. Phospholipids E. Integral proteins
A researcher determined that a strain of E. coli is producing a shortened version of a protein required for glucose metabolism. What type of mutation could be responsible for this shorter than normal protein?
A. missense mutation B. silent mutation C. nonsense mutation D. sense mutation E. frameshift mutation
According to the concept of punctuated equilibrium,
A) natural selection is unimportant as a mechanism of evolution. B) given enough time, most existing species will branch gradually into new species. C) a new species accumulates most of its unique features as it comes into existence. D) evolution of new species features long periods during which changes are occurring, interspersed with short periods of equilibrium or stasis. E) transitional fossils, intermediate between newer species and their parent species, should be abundant.