There are many cases of homeostasis mechanism. In this mechanism, there will be a receptor that will catch a condition. After that, an order will be sent to various place depend on the condition.
One of them is temperature control which was done by shivering or sweating. When your body temperature is too high, the thermoreceptor will detect it and then the brain will send the order to the body sweat glands. Sweat on body surface will evaporate and reduce body temperature.
When the temperature is too low, the brain will tell the muscle to shiver so you can produce heat.
Other than temperature, homeostasis also control blood pressure, or many chemical level(oxygen, glucose).
After a steroid hormone binds to its intracellular receptor, transcription of specific genes occurs. The activated receptor moves into the nucleus and binds to DNA
<h3>What is steroid hormone and intracellular receptor ?</h3>
Target cells have steroid hormone receptors in their nuclei, cytoplasm, and plasma membranes. They are typically intracellular receptors (often cytoplasmic or nuclear) that start the signalling processes for steroid hormones, which modify the expression of genes over the course of hours to days.
- By attaching to intracellular receptors, steroid hormones control cellular functions by changing the expression of specific nucleotide sequences. Since the majority of steroid receptors in target cells reside in the cytoplasm, they must enter the nucleus to change gene expression.
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This is in accordance to behavioral conditioning. Originally, the white uniform of the nurse has no associated stimuli for the patient, that's why the baby will not react in fear upon seeing the white uniform for the first time. But since the nurse introduces a painful stimuli (i.e. injection) to the baby, the baby will then associated the painful stimuli to the harmless stimuli which is the white uniform. The white uniform will now be a conditioned stimulus; wherein all nurses or all persons in white uniform will trigger fear to the patient, even without the original painful stimulus.
Its the plant cell because the animal cell produce cellular respiration
Answer:
A cell wall is a structural layer surrounding
of plant cells, just outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides the cell with both structural support and protection, and also acts as a filtering mechanism