Tag: hormones

Quizzes (2) Questions (150)

Questions Related to hormones

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

Given is an incomplete table on hormones, their source glands and one major effect of each human body. Identify the option representing correct grouping of hormone its gland and effect.

Gland Secretion Effect on body
A Oestrogen Maintenance of secondary sexual characters
Alpha cells of Islets of Langerhans B Raises blood sugar level
Anterior pituitary C Over secretion leads to gigantism


  1. A- ovary, B-glucagon, C-growth hormone

  2. A-placenta, B-insulin, C-vasopressin

  3. A-ovary, B-insulin, C-calcitonin

  4. A-placenta, B-glucagon, C-calcitonin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oestrogen is secreted by the ovary, glucagon is secreted by alpha cells of the pancreas to raise blood sugar, and growth hormone is secreted by the anterior pituitary.

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

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

  1. $2$
  2. $3$
  3. $4$
  4. $5$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nuclear receptors are typically used by steroid hormones and thyroid hormones. Among the list, Thyroxine and Cortisol have nuclear receptors. Catecholamines, Cholecystokinin, and Growth hormone use cell surface receptors.

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

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?

  1. Extra cellular matrix

  2. Blood

  3. Plasma membrane

  4. Nucleus
Reveal answer Fill a bubble to check yourself
C Correct answer
Multiple choice biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

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

  1. cortisol

  2. aldosterone

  3. Parathormone

  4. thyrocalcitonin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Parathormone and thyrocalcitonin are directly involved in calcium homeostasis. Aldosterone indirectly affects calcium by regulating sodium and water balance. Cortisol is a glucocorticoid and is not primarily involved in calcium balance.

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

What is correct to say about the hormone action 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
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

Which hormone inhibit morphogenesis?

  1. ABA

  2. 2, 4-D

  3. Jasmonic acid

  4. IBA
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.
Multiple choice biology chemical coordination and integration hormones coordination in human beings- chemical control endocrine system in humans

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

  1. Controlled centres

  2. Substrates

  3. Target tissues

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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.