★ Gene Cloning Quiz
How do scientists cut DNA into smaller strands?
A. restriction enzymes
B. scissors
C. ligase
D. agarose
Select your answer:

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Cell Membrane and Transport › ViewThe cell is seen having trouble with cell to cell recognition . Scientists think it may be due to a part of the cell membrane not properly functioning. What part of the cell membrane is not working correctly.
A. integral proteins
B. carbohydrates
C. plasmodesmata
D. Peripheral proteins
Terms and Definitions - Diseases › View
the type of immunity in which the immune system produces antibodies in response to the presence of a pathogen. It can last a few years or up to a lifetime
A. lymph node
B. immunity
C. active immunity
D. passive immunity
E. lymph nodes, adenoids, spleen, bone marrow, lymphatic vessels, tonsils, thymus, appendix