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31 Cards in this Set
- Front
- Back
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At the synapse, a chemical signal is converted to an electrical signal as
neurotransmitters are released into the synaptic cleft? |
false
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In an action potential, the membrane potential undergoes a series of changes.
Which of the following is the correct sequence of events? |
Depolarization
threshold depolarization repolarization overshoot |
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Which of the following plant hormones is characterized by enhancing cell division?
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gibberellins
cytokinins |
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The signal transduction phase is often mediated by a secondary messenger?
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True
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Activates release of T3 and T4 by the thyroid gland?
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Thyroid stimulating hormone
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Activates uptake of Calcium by bone
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calcitonin
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Activates release of glucose by the liver
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glucagon
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As electrons flow through the electron transport chain located between PS II and
the energy originally captured as light is transferred to the movement of protons from the thylakoid space into the stroma. |
false
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Once those electrons reach ____ they will be re-energized by the light harvesting complexes located there.
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PS I,
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____ is oxidized in the Calvin Cycle.
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NADPH
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main product of the Calvin Cycle along with ribulose bisphosphate
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glyceraldehyde-3-phosphate
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a mobile electron carrier in photosynthesis; delivers electrons from the light harvesting complexes to the calvin cycle
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NADP+
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enzyme that catalyzes fixation of carbon dioxide to ribulose bisphosphate.
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Ribulose bisphosphate carboxylase
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___ - "hill of axon", region at the beginning of the axon.
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Axon hillock
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Need this to reach threshold to propagate the signal, the neuron is receiving input from multiple other neurons some inhibitory, some excitatory
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Axon hillock
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It takes the electrons, instead of primary receptor these are stolen by ____.
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DPIP
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____ flow is the combination of ps2 and ps1, hydrogen ions are pumped into the thylakoid space and want to escape the thylakoid space.
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Noncyclic
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For ____ also need to remember it has the enzymatic ability to cleave water molecule and steal electrons, the h+ is on the inside and o2 on the outside. (only need to know manganese cluster does this?)
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ps2
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____ an accessory pigment, it expands light available for synthesis and protects against uv.
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Cartenoid
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____ are photosynthetic factories that capture light energy and convert it into chemical energy, in the form of chemical bonds.
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Chloroplasts
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Light reactions in ____ that are embedded in the thylakoid membrane
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light harvesting complexes
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Chloroplasts are ____ factories that capture light energy and convert it into chemical energy, in the form of chemical bonds.
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photosynthetic
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Cyclic and non-cyclic "flows" because you need more ____ than ____.
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ATP
NADPH |
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____ - between activation of the 2nd messenger and the enzyme activation...
ex. Glucagon in the liver |
Enzyme cascade
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____ - special name because it commits the cell to division.
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Restriction point
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Each pigment molecule has a maximal wavelength.
If you add up all off the pigments wavelengths you have the ____. |
action spectrum
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____ is threshold.
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-50
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____ - on dendrites of new neuron across from synapse, it’s a chemical gate on the synapse.
There are ____ across the axon. |
Ligand gates
electrical gates |
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____ - pop open at a certain voltage, have these for potassium and sodium, rush out or in of the cell..
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Voltage gated channels
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____ is produced by P680 as the missing electrons are replaced by cleavage of a water
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Oxygen
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In photosystem 2, energy is transferred along pigment molecules until it reaches ____.
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P680
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