What happens when a neurotransmitter is released by a presynaptic cell?
a. It causes calcium to rush into the presynaptic neuron.
b. It causes calcium to rush into the postsynaptic neuron.
c. The neurotransmitter passively spreads across the synaptic cleft.
d. The neurotransmitter is actively transported across the synaptic cleft.
Question 2
In comparison to activating effects, organizing effects of hormones take place ____.
a. later in life and produce more long-lasting effects
b. later in life and produce more temporary effects
c. earlier in life and produce more long-lasting effects
d. earlier in life and produce more temporary effects
Cambrian trilobite, with a shell made of calcium carbonate.
Inheritance of the sickle cell trait and sickle cell anemia.
bacteria cell diagram
When the exhaust is lean, the PCM applies a positive current into the pump cell.
(b) Scanning electron microscopy showing a phagocytic cell in the process of phagocytizing bacteria. ...
Infected T Cell with Budding HIV Virus