Tag: coordination in human beings- chemical control

Questions Related to coordination in human beings- chemical control

Which of the following hormone functions through generating second messengers ?

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. lodothyroglobulin

  2. Estrogen

  3. Adrenaline

  4. Estradiole

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Correct Option: A

How many of the following hormones have nuclear receptors?
Thyroxine, Catecholamines, Cortisol, Cholecystokinin, Growth hormone.

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. $2$

  2. $3$

  3. $4$

  4. $5$

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Correct Option: A

Hormones are called chemical signals that stimulate specific target tissues. Their specificity is due to the presence of signal receiving receptors only in the respective target tissues. Where are these receptors present in case of hormones of protein nature?

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. Extra cellular matrix

  2. Blood

  3. Plasma membrane

  4. Nucleus

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Correct Option: A

Hormones involved in maintaining $Ca^{2+}$ balance in human body includes all except

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. cortisol

  2. aldosterone

  3. Parathormone

  4. thyrocalcitonin

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Correct Option: A

I. Insulin 
II. Epinephrine 
III.Oestradiol
IV.Norepinephrine
V.Testosterone
VI.Glucagon
Which of the above hormones are amino acid derivatives?

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. I and II

  2. III and IV

  3. V and VI

  4. II and IV

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Correct Option: A

What is correct to say about the hormone action in humans?

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. Glucagon is secreted by $\beta$-cells of islets of Langerhans and stimulates glycogenolysis

  2. Secretion of thymosin's is stimulated with aging

  3. In females, FSH first binds with specific receptors on ovarian cell membrane

  4. FSH stimulates the secretion of estrogen and progesterone

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Correct Option: A

Which hormone inhibit morphogenesis?

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. ABA

  2. 2, 4-D

  3. Jasmonic acid

  4. IBA

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Correct Option: A
Explanation:
  • The plant hormone abscisic acid (ABA) has been shown to promote abscission and dormancy, to inhibit cell elongation and to be involved in several hormones mediated plant responses
  • ABA inhibits seed germination.It also inhibits morphogenesis(It is the biological process that causes an organism to develop its shape).
  • So, the correct answer is 'ABA'.

Acetylcholine can be hydrolysed into 

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. Acetic acid

  2. Choline

  3. Dopamine

  4. Both A and B

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Correct Option: D

The tissues influenced by a specific hormone are referred to as its

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. Controlled centres

  2. Substrates

  3. Target tissues

  4. All of the above

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Correct Option: C
Explanation:

Hormones are chemically diverse group of molecules produced in endocrine glands. The secretions of these glands are not conducted through special ducts but are just poured into circulating blood. Specific organs also called as target tissues have special receptors on their cell surface, which binds to specific hormones. Those tissues which do not have receptors for a particular hormone will not respond to that hormone.

The effect of different hormones on the body can be best said to bring about

biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

  1. Stimulation of organs

  2. Release of inherent capacities

  3. Proper growth

  4. Co-ordination of functions

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Correct Option: D
Explanation:

Hormones are our body's chemical messengers. They travel in your bloodstream to tissues or organs. They work slowly, over time, and affect many different processes, including- growth and development, metabolism that derives energy from the foods we eat, sexual function, reproduction, mood. All of these is achieved by coordination of functions. Thus, answer is- 'co-ordination of functions'.