Answer:
1. B, D and J.
2. A and C.
3. E, F, G, H, AND I.
Explanation:
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.
The answer is <span>Gap Junction
Gap junction is a small gap between the cells that used to transmit signall to the cells. This gap will allow the heart muscle to be activated in unison. Coordinated contractions are important for heart muscle because it creates the force that needed to pump the blood.</span>
Answer:
Oxygen
Explanation:
During aerobic respiration, oxygen combines with hydrogen ions to form water that is released as a by-product. The hydrogen ions are oxidized and oxygen reduced to form water. The glucose molecule is broken down into carbon dioxide, water and ATP energy the is used by cells. The carbon dioxide diffuses into the environment and is used during photosynthesis.
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