Organelles are __________
A. structures that contain the genetic material.
B. membrane-bound compartments of eukaryotic cells.
C. the region that contains the DNA in prokaryotic cells.
D. the outer, rigid covering of a prokaryotic cell.
B
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Nonpoint source pollutants include
(a) fertilizers from lawns. (b) pesticides from farm fields. (c) soil erosion from construction sites. (d) all of the above.
Two reasons for two selectable markers in a YAC vector are:
A. to insure the EcoRI digest is complete. B. to insure the desired recombinant construct has telomeres on both ends. C. to contribute to the centromere structure. D. to increase transformation efficiency. E. to eliminate the possibility of screening unstable recombinants.
Chlamydia trachomatis is the most prevalent single cause of blindness resulting from an infectious agent.
Answer the following statement true (T) or false (F)
You have discovered a kind of bird which has adapted to become aquatic. What would you expect if it lives submerged in freshwater?
What will be an ideal response?