Figure 1. A dopaminergic synapse between two neurons A and B. 1. Explain how the different parts of the synapse shown in Figure 1
allow the transmission of an action potential between Neuron A and
Neuron B. [3 marks]
2. Cocaine is a drug that interferes with normal functioning of the
dopamine response
a. Explain why the presence of cocaine may increase feelings of
pleasure in the brain. [3 marks]
3. Figure 2 below is a graph showing the membrane potential in Neuron
B during and after the release of dopamine from Neuron A. The
graph shows changes in voltage in millivolts (mV) against time in
milliseconds (ms).

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

cellular respiration oxidizes food into energy in the form of atps.

glycolysis (6 c hexose) > 2x atps are used > 6c hexose biphosphate > 2 x 3c triphosphate >

2 x 3c pyruvate (2x nadh produced from nad) and (4x atp produced)

pyruvate actively pumped mitochondrial matrix.

what is the statement?

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.