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HQ- Chap. 30-31

HQ- Chap. 30-31. 1- Which of the following shows the correct sequence?. A. Pituitary  thyroxine  thyroid  TSH B. Pituitary  TSH  thyroid  thyroxine C. TSH  thyroxine  pituitary  thyroid D. Thyroid  TSH  thyroxine  pituitary.

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HQ- Chap. 30-31

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  1. HQ- Chap. 30-31

  2. 1- Which of the following shows the correct sequence? • A. Pituitarythyroxine thyroid  TSH • B. Pituitary  TSH thyroid thyroxine • C. TSH  thyroxine pituitary  thyroid • D. Thyroid TSH thyroxine  pituitary

  3. 2- In humans, vitamin D plays an essential role in the absorbtion of which substance?

  4. 3- which plant growth substance promotes the growth of buds?

  5. 4- Name and element other than nitrogen which deficiency results in yellow leaves?

  6. 5. Name the chemicalthat has an inhibitory effect on the action of many enzymes

  7. 6- Which two drugs result in the birth of children of smaller size?

  8. 7- Give three reasons why calcium is needed by humans?

  9. 8. What is the name given to the movement of plants as a result of uneven light exposure?

  10. 9- Where is α- amylase synthesised in the barley seed?

  11. 10- what is the name of the part of the barley seed which acts as a food reserve?

  12. Answers • 1-B • 2- Calcium • 3- Gibelleric acid • 4- Magnesium • 5- Lead • 6- Nicotine, alcohol • 7- for bones, teeth and clotting of blood • 8- phototropism • 9- Aleurone layer • 10- Endosperm

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