Distinguish between the central and peripheral nervous systems
What will be an ideal response?
The central nervous system involves the brain and spinal cord where integration of neural activity
occurs. The peripheral nervous system is involved with transmission of information to the central
nervous system--the afferent division--and transmission of information away from the central nervous
system--the efferent division--to target structures and organs.
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The synthesis of ____ is triggered when cells bind systemin
a. gibberellin b. auxin c. jasmonate d. cytokinin e. brassinosteroids
Some restriction enzymes cut at specific and unambiguous sequences (e.g., NotI at GCGGCCGC). As such, the distance between two such sites in a large random DNA sequence is 48, assuming a 50% G+C DNA content
However, the sequence recognized by XhoII is said to be ambiguous (Pu-GATC-Py, where Pu = any purine and Py any pyrimidine). What, therefore, is the expected distance between two XhoII sites in a large random sequence? A) 4 × 4 × 4 × 4 B) 1 × 4 × 4 × 4 × 4 × 1 C) 2 × 4 × 4 × 4 × 4 × 2 D) 46 E) 42 × 22
The reuptake of serotonin by neurons in the brain can be inhibited by:
a. astrocytes. b. antidepressant medications. c. Valium. d. enkephalin. e. nitrous oxide.
A plant growth response to mechanical stress, such as rain and contact with passing animals, is knownas:a
phototropism. b. gravitropism. c. thigmomorphogensis. d. a circadian rhythm. e. thigmotropism.