Young birds see objects flying overhead and respond by crouching down into the nest and remaining still. Over time some objects become familiar and the young birds do not crouch down. What is this type of learning?
A. sensitization
B. associative learning
C. operant conditioning
D. habituation
E. Pavlovian conditioning
D. habituation
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Microorganisms show differential sensitivity to antimicrobial agents.
Answer the following statement true (T) or false (F)
Vibrio cholerae is most often associated with
A. breathing air. B. eating food. C. drinking water. D. touching animals
Plants require a lot of water for hydration, metabolism, homeostasis, and photosynthesis. How is water used in photosynthesis?
A. as an electron donor in the photosystems B. to combine with NADP+ to form NADPH C. to combine with ADP to form ATP D. as an electron acceptor in the electron transport chain E. as a substrate for ATP synthase
All of the following are specialized epidermal cells EXCEPT
A. trichomes. B. root hairs. C. guard cells. D. collenchyma.