A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
A membrane is a thin layer which forms the wall of the cell and typically controls what leaves and enters the cell.
Some of the effects of various biological conditions on membrane physiology are;
1. Makes RMP (Resting Membrane Potential) Less Negative: this simply means that it decreases RMP;
Decreased concentration of leaky potassium channels in the membrane.
ATP stores are declining through mitochondrial poison (arsenic).
Increased concentration of leaky sodium channels in the membrane.
2. Influences the Ability of the Cell to Repolarize;
Voltage regulated potassium channels are blocked.
Acetylcholine esterase concentration is decreased.
3. Influences the Ability of the Cell to Depolarize;
The size of the synaptic cleft is increased.
Hyperhydration (high water concentration in ECF).
Release of excitatory neurotransmitter by a presynaptic input is blocked.
Hyponatremia (low ECF sodium).
Neurotransmitter synthesis is compromised due to Golgi dysfunction in the presynaptic neuron.
Fixation converts nitrogen in the atmosphere into forms that plants can absorb through their root systems. A small amount of nitrogen can be fixed when lightning provides the energy needed for N
The BRCA gene is a tumor-suppressor gene found in the breast; to be more specific, it produces proteins that suppress cancerous activities/abnormal growth in the body. A mutation in a BRCA gene would allow these abnormal growth activities to go unchecked and thus increase the rate of mitosis. Cell cycle checkpoints would significantly be worse at their jobs of checking and correcting for errors during the cell cycle. Tumors would result as well, as cancerous growth continues, and the tumor can become metastatic.
