A. Homeostasis is the ability for the body to maintain a stable internal environment, despite changes that can occur in external conditions.
A typical feedback loops has three main components that make it function. 1) Receptor, which regulates changes in a controlled environment and sends information to the control center. 2) Control Center, which compares incoming input with other information and informs the effector, for a change to occur. 3) Effector, acts on the changes and releases the response.
B. Many physiological processes are controlled by feedback mechanisms. A Negative feedback occurs when the rate of a process drops as the concentration rises. Positive Feedback occurs when the rate of a process increases and as the concentration of the product increases. The difference between the two mechanisms is that in the negative feedback, the output decreases the original effect of the stimulus. In a positive feedback system, the output increases the stimulus. An example of a positive feedback system is childbirth. An example of negative feedback is the maintenance of blood glucose levels.
2. A molecule containing ionic bonds
- Magnesium hydroxide in pills for gastric relief
A molecule containing covalent bonds
- Vinegar is mainly ethanoic acid
A molecule containing hydrogen bonds
- Water is compromised from hydrogen bonding.
3. Mitosis and Meiosis both have their similarities and differences. Some of the differences are that in mitosis, it occurs in somatic cells in the body and in meiosis only in sexual reproduction cells. In mitosis, dividing cells can be diploid or haploid, and in meiosis dividing cells are diploid only. In mitosis, DNA replicates once during the S phase of interphase and nucleus divides on...
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10A. In the body, sympathetic preganglionic neurons are very short, by communicating with the cell bodies of postganglionic neurons that are very long, it helps create a smoother transmission. These postganglion neurons are created in the ganglion chain.
Thus, leading to the sympathetic preganglionic neurons to connect with postganglionic neurons at the sympathetic ganglion outside of the central nervous system.
B. The sympathetic division has more widespread and long lasting effects than the parasympathetic division because of the fight or flight mechanism. This mechanism prepares the body how to respond to stress. How it is our body’s primitive duty to prepare us for a threat or attack. Parasympathetic is different, it is responsible for the rest and digest mechanism. This method is known for slowing activities that are enhanced by the sympathetic system.
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