Term
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Definition
(plant hormone)
-stem elongation
-differentiation
-apical dominance
-inhibits lateral shoot development |
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Term
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Definition
(plant hormone)
-cell division
-germination
-stimulate lateral shoot development |
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Term
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Definition
(plant hormone)
-seed
-bud
-fruit development
-stem elongation |
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Term
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Definition
(plant hormone)
-inhibits growth
-closes stomata
-prevents germination |
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Term
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Definition
(plant hormone)
-promotes fruit ripening
-programmed cell death
-leaf abscission
-response to mechanical |
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Term
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Definition
(plant hormone)
-normal growth and development
-xylem differentiation
-pollen tube elongation |
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Term
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Definition
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Term
| High concentration of auxin |
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Definition
| inhibits stem elongation (___ concentration of ____) |
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Term
| low concentrations of auxin |
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Definition
| promotes stem elongation by activating H+ active transport mechanisms ((___ concentration of ____) |
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Definition
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Term
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Definition
-some plants flower only when the days are long
-some flower only when the days are short
-night length is what is critical
-plants contain pigments called phytochromes |
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Term
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Definition
(system)
-hormones secreted into blood stream
-broadcasts the signal throughout a broad area |
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Term
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Definition
(system)
-neurotransmitters secreted into the synapse (junction) between neuron
-sends the signal directly to a target cell
-composed of specialized cells that can transmit action potentials from one location in the body to another. neurons make this possible |
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Term
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Definition
| bind to cytoplasmic receptors, often regulate gene activity |
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Term
| protein or amino acid derived hormones |
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Definition
-bind to membrane bound receptors
-activate signal transduction pathways
-cytoplasmic response |
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Term
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Definition
| most often results in a low response |
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Term
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Definition
| generally has a rapid response |
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Term
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Definition
-glands that secrete hormones into the blood stream
-hypothalamus
-pituitary (posterior, anterior) |
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Term
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Definition
| secretes 2 hormones by neurosecretory cells in the hypothalamus |
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Term
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Definition
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Term
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Definition
-example: blood glucose levels, glucagon and insulin
-both produced by the pancreas |
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Term
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Definition
| stimulates the breakdown of glycogen to glucose |
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Term
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Definition
(neuron)
receptor to central nervous system (brain and spinal cord) |
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Term
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Definition
(neuron)
between sensory and motor neurons |
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Term
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Definition
(neuron)
from CNS to effector cell |
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Term
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Definition
-exists along the axon
-coating around the axon
-speeds up axon reaction |
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Term
| Na+ Voltage Gated channels |
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Definition
-Have 2 gates
-Activation gate opens quickly
-Inactivation gate closes slowly
-Open channels cause depolarization |
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Term
| K+ Voltage-Gated Channels |
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Definition
-Have 1 gate
-Opens slowly
-Open channels cause hyperpolarization |
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Term
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Definition
-time when the membrane is non-responsive to stimulus
-when both the Na+ ion gated channels are closed |
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Term
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Definition
(synapse)
-gap junctions
-very rapid propagation
-action potentials can flow in both direction
-no integration |
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Term
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Definition
(synapse)
-slower transmission
-action potentials can only flow in one direction
-integration |
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Term
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Definition
| produce a receptor potential |
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Term
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Definition
| strengthens the stimulus energy |
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