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प्रश्न
What are hormones? Give examples.
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उत्तर
Hormone is an organic substance that is sëcreted by one tissue into the bloodstream and induces a physiological response in other tissues. It is an intercellular signaling molecule. Virtually every process in a complex organism is regulated by one or more hormones. For example, insulin, epinephrine, estrogen, androgen, etc.
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संबंधित प्रश्न
Put a tick mark (✓) against the correct alternative in the following statement:
Cortisone hormone is secreted by:
Membrane bound receptors and hormones produce second messengers like _________.
Select and write the most appropriate answer from the given.
Which of the following hormones is responsible for regulating the blood sugar level in the human body?
Susan’s father feels very tired and frequently urinates. After clinical diagnosis, he was advised to take an injection daily to maintain his blood glucose level. What would be the possible cause for this? Suggest preventive measures.
Insulin, a hormone chemically is ___________.
Match the terms of Column (A) with those of Column (B)
| Column (A) | Column (B) |
| (a) Olfactory receptors | (i) Tongue |
| (b) Thermo receptors (temperature receptors) | (ii) Eye |
| (c) Gustatoreceptors | (iii) Nose |
| (d) Photoreceptors | (iv) Skin |
Which hormone is responsible for the changes noticed in females at puberty?
Mention one function for each of these hormones :
- Thyroxin
- Insulin
- Adrenaline
- Growth hormone
- Testosterone
With the help of an example, explain how does the feedback mechanism regulate the hormone secretion.
Hormones are secreted directly into the ______.
