dezmondpowell
30.10.2021 •
Biology
Cortisol is a steroid hormone that regulates a vertebrate animal's response to stress and inhibits inflammation. Agonists similar to cortisol are used medically to reduce symptoms of certain inflammatory disorders. Physical stress stimulates the sympathetic nervous system to initiate the secretion of corticotropin-releasing hormone (CRH). CRH is a signal peptide synthesized and released from CRH neurons in the hypothalamus. CRH stimulates adrenocorticotropic (ACTH) hormone release from the anterior pituitary gland, which activates cortisol release from the adrenal glands. Neurons that release CRH contain cortisol receptors that are under negative feedback control.
1. A mutation that causes the cortisol receptor to be active all of the time would decrease CRH synthesis.
a. True
b. False
2. A fluorescent marker can be used to selectively label CRH receptors.
a. True
b. False
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Ответ:
Their roots take up water and minerals from the ground and their leaves absorb a gas called carbon dioxide (CO2) from the air. They convert these ingredients into food by using energy from sunlight. This process is called photosynthesis, which means 'making out of light'. The foods are called glucose and starch.
Explanation: