Ionizing radiation can produce which of the following?
A. cytosine
B. free radicals
C. stop codons
D. thymine dimers
E. hypoxanthine
B. free radicals
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________ are plasmids that contain genes for resistance to a drug.
Fill in the blank(s) with the appropriate word(s).
What is the advantage to the segmentation that is exemplified in the Phylum Annelida? Check all that apply.
A. Locomotion is more efficient. B. The importance of segmentation is unclear. C. Segments can be specialized. D. The annelid may still survive if one segment is damaged. E. Vital structures are repeated in each segment.
Please match the primary categories of metabolism with the statements that most accurately describe them.
Anabolism A) Larger molecules are broken down into smaller molecules B) Larger molecules are built from smaller molecules C) All of the chemical reactions that occur in a cell
The sequence of eras beginning wit the earliest era and proceeding forward to the most recent era in the geologic timescale is
A. Cenozoic - Archean - Mesozoic B. Archean - Mesozoic - Cenozoic C. Paleozoic - Mesozoic- Proterozoic D. Archean - Paleozoic - Proterozoic E. Mesozoic - Cenozoic - Paleozoic