________ are of the same type since they are derived from the same B cell and are against a specific antigen.
A. Agglutination factors
B. Allergen antibodies
C. Immunosuppressant agents
D. Monoclonal antibodies
E. Autoimmune agents
Answer: D
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How do arbuscular mycorrhizae (AM) help plants obtain more nutrients from the soil?
A) Byproducts of AM metabolism serve as primary nutrient sources for the plants. B) The AM increase the total surface area to absorb more nutrients. C) The hyphae develop as specialized nodules that directly produce nutrients for the plant. D) Signaling molecules in the plant are passed to the AM to initiate electron flow, which is in turn used to create ATP.
DNA replaced RNA as the main information
molecule probably because a. DNA contains thymine and RNA does not. b. DNA is double stranded and breaks less easily. c. DNA can store more protein-building instructions in less space. d. RNA is highly unstable. e. two of these are correct
Strawberry plants vegetatively reproduce by forming new plants where the nodes of stolons touch the ground.
Answer the following statement true (T) or false (F)
Wild type bread mold can grow in a minimal medium without supplements, while certain mutated strains can only grow in a minimal medium that is supplemented with specific intermediates. See the figure below for an overview of the arginine biosynthetic pathway.A strain that can grow in a minimal medium containing arginine, but NOT in minimal media containing citrulline nor in minimal media containing ornithine would have a mutation in the gene that encodes for ________.
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A. enzyme 2. B. enzyme 1. C. both enzymes 2 and 3. D. both enzymes 1 and 3. E. enzyme 3.