Why does DNA pol I carry the number one?  

A.  It was the first polymerase isolated from E. coli.
B.  It is the first polymerase to be activated during DNA replication.
C.  It is the only polymerase that has both 3' to 5' and 5' to 3' exonuclease activity.
D.  It is the smallest polymerase.


A.  It was the first polymerase isolated from E. coli.

Biology & Microbiology

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Darwin's theory of evolution is supported by many modern pieces of evidence. Check all that apply.

_____ New measurements of the age of the earth. _____ An understanding of the mechanism of heredity. _____ Human population growth. _____ Comparative studies of animal structures. _____ Similarities in DNA of related species.

Biology & Microbiology

Clara has alkaptonuria. Her symptoms include back spasms, dark urine, arthritis, hearing loss, kidney stones, heart valve damage, and darkened ear tips. This condition is therefore

A) genetically heterogenic. B) pleiotropic. C) dominant. D) epistatic.

Biology & Microbiology

Polychaetas and oligochaetes are named for the bristles that are called

A. ganglia. B. cnidocyst. C. chaetae. D. radula. E. flagella.

Biology & Microbiology

Which of the following nitrogenous bases is not found in DNA?

A. guanine B. thymine C. uracil D. cytosine E. adenine

Biology & Microbiology