2. third quarter 7. first quarter 1. waxing gibbous 8. waning gibbous 5. waning cresent 3. waxing cresent
Answer:
Tropomyosin
Explanation:
The calcium binding to troponin and induces the muscle contraction. The active binding site gets exposed due to the calcium binding.
The calcium ions then attaches with troponin molecule. This changes the shape of troponin and removes the tropomyosin protein from the binding site. No ATP is available during this process.
Thus, the correct answer is option (d).
Inhibin hormone released by the highlighted structure inhibits the secretion of FSH only.
<h3>What is inhibin hormone?</h3>
- A protein called inhibin is secreted by the granulosa cells in women and the Sertoli cells in men.
- It decreases the amount of LH-releasing hormone in the hypothalamus and prevents the pituitary gland from producing and releasing follicle-stimulating hormone.
- Inhibin is a factor in the feedback control of FSH secretion in both males and females going through puberty.
- Follistatin suppresses FSH-subunit expression like inhibin, whereas activin enhances it, which in turn influences FSH production and secretion.
- Inhibin A is secreted by the corpora lutea and dominant ovarian follicles in women, which helps to explain why levels are so high during the late follicular and luteal stages.
- During the late luteal and early follicular phases of the menstrual cycle, inhibin B is reciprocally raised.
Learn more about inhibin here:
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Question: Which hormone released by the highlighted structure inhibits the secretion of FSH only?
After pollination and fertilization following changes occur in a flower: The petals, stamens, style and stigma of the flower fall off. Sepals dry up and hold the ovary. The ovules confined in the ovary develop into seed
Answer:
Option 4 - Calcium
Explanation:
The <em>divalent cation </em>called <em>calcium</em> is needed to provide additional support to the bone matrix.
Calcium is considered one of the most <em>important components</em> in bone development. It helps in the formation as well as maintenance of bone. During the modeling and remodeling process of bones, calcium facilitates the formation of <em>semi-hard new tissues</em> which leads to the formation of new bone which is very hard.
Due to this reason, calcium is needed to create extra bone matrix support.