Answer:
Sometimes, molecules cannot move through the cell membrane on their own. These molecules need special transport proteins to help them move across the membrane, a process known as facilitative diffusion. ... Many channel proteins allow the diffusion of ions. Ions are charged atoms.
Explanation:
The law of conservation of energy is one of the basic laws of physics and therefore governs the microscopic motion of individual atoms in a chemical reaction. The law of conservation energy states:
In a closed system, i.e., a system that isolated from its surroundings, the total energy of the system is conserved.
In SI units, energy has units of Joules. 1 Joule = 1 kgms.
Some forms of energy:
<span>1.Kinetic energy - energy of motion.2.Potential energy - energy of ``location'' with respect to some reference point.3.Chemical energy - energy stored in chemical bonds, which can be released in reactions.4.Electrical energy - energy created by separating charges; energy stored in a battery, for example.5.<span>Thermal energy - energy given off as heat, such as friction.</span></span>
Photoreceptors.
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Answer:
Pepsinogen is produced by chief cells and is activated by hydrochloric acid secreted by parietal cells.
Explanation:
Pepsinogen is a proenzyme produced in the chief cells (that are located in the stomach lining) that, when gets activated, is transformed into pepsin - a peptidase with the function to degrade proteins into amino acids.
The reason why pepsinogen is released inactive is that it would break down all of the cell's proteins because of its proteolytic nature. For this reason, it is released as a proenzyme and gets activated when reaches the acidic environment provided by the hydrochloric acid secreted by the parietal cells, also in the stomach lining.
The main problem that your central nervous system will try to solve is how to get out of this place.
<h3>B. What is the somatic nervous system probably doing?</h3>
It is releasing stimuli so that the pupil dilates and the blood goes to the muscles, to give greater physical vigor.
<h3>ç. Which part of the autonomic nervous system is likely to be active and what is it doing?</h3>
The autonomic nervous system is a part of the nervous system that functions independently of will and consists of neurons that conduct impulses from the central nervous system (brain and/or spinal cord) to the glands, smooth muscle and heart muscle.
<h3>What are the physiological responses of adrenaline binding in the sympathetic autonomic system?</h3>
Adrenaline increases the overall activity of the heart, increasing both the heart rate and the force of contraction. The heart has β1 receptors in both contractile and specialized myocardium. When turning on, a series of cardiac effects can happen.
With this information, we can conclude that the main problem that your central nervous system will try to solve is how to get out of this place.
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