<span>In biochemical reactions,
it is mostly triggered by enzymes. Enzymes are important components in the
process that involves metabolism and digestive functions, further, most of
these enzymes are proteins. Proteins are biological macromolecule and mostly
composed of enzymes. Proteins play a role in the physical make-up of a cell or
acts as a cytoskeleton –maintains cell shape and figure. These proteins plays
different roles and works with nucleic acids and other macromolecules in the
cells including cell cycle, cell adhesion, immune response and cell indicators.
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Answer;
-Positive charge
Prior to the arrival of a signal from a presynaptic input, the post-synaptic membrane is polar with a greater relative positive charge to the ECF
Explanation;
-Neurons talk to each other across synapses. In somatic neurons, an action potential arrives at the synapse causing synaptic vesicles to fuse with the presynaptic membrane. The pre-synaptic membrane releases acetyl choline via exocytosis into the extracellular of the synaptic cleft.
-The ACh diffuses across the cleft and binds to the ligand-regulated sodium channels. Activated sodium channels allow a rapid diffusion down its electrochemical gradient towards the ICF. The movement of positive charges to the ICT causes the relative charge across the membrane to become positive on the inner surface.
The ice has less density than liquid water, so it floats on the water surface. Therefore during the winter all the lakes and rivers are frozen only at a top. Deeper layers of water are cold, but still liquid and it allows fish and other organisms to survive. Moreover, the ice cover provides temperature isolation so liquid water beneath the ice has more or less constant temperature (around 4 dgr Celsius)
The answer is C. anatomy because anatomy is the study of structure while physiology is the study of how the function works either mechanically or etc.
