The first known member of the genus Homo is ____
a. H. erectus
b. H. sapiens
c. H. neanderthalensis
d. H. habilis
e. H. floresiensis
ANSWER: d
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DNA:DNA hybridization is a sensitive method for revealing subtle genetic differences because it measures the degree of sequence similarity between two genomes
Indicate whether the statement is true or false.
A nucleosome consists of
A. a stretch of DNA. B. an RNA molecule. C. a ribosome and RNA. D. a stretch of DNA and histones. E. two or more closely related genes.
Covalent modification
A) can activate an enzyme. B) affects the activity of an enzyme by adding or removing a chemical group. C) can involve the addition of phosphate groups. D) produces modifications that can sometimes be reversed. E) All of these are correct.
What may be a result of the denaturation of proteins?
A. Formation of hydrogen bonds B. Loss of three-dimensional structure C. Removal of R groups from amino acids D. No change in enzyme activity E. Formation of covalent bonds