When first viewing a slide should you keep the voltage or your light source at a minimum or maximum?
A) Minimum
B) Maximum
A) Minimum
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Cycads and ginkgos differ from all other seed plants by:
A. having flagellated sperm within the pollen B. lacking cambium C. having the sexes separated on different trees D. being pollinated by wind instead of insects E. All of the ways mentioned in the other choices are correct.
There are five antibody classes: __________, __________, __________, __________, and
__________. (Ig stands for __________.) Fill in the blank(s) with the appropriate word(s).
Lymphocytes called __________________ secrete antibodies.
A. plasma cells B. T cells C. helper T cells D. natural killer cells
Modify the following statement to make it correct: Ribozymes are ribonucleosomes used by bacteria and eukaryotic cells to modify DNA.
A. Ribozymes are ribonucleases used by bacteria and eukaryotic cells to modify RNA. B. Ribozymes are ribonucleosomes used only by eukaryotic cells only to modify RNA. C. Ribozymes are ribonucleases used by bacteria and eukaryotic cells to modify DNA. D. Ribozymes are ribonucleosomes used by bacteria and eukaryotic cells to modify RNA.