Tag: hormones and metabolism
Questions Related to hormones and metabolism
Hormones can be differentiated from neurotransmitters on the basis of the fact that
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Hormones modify cellular activity
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Hormones are secreted into the bloodstream
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Hormones produce a change in animal behavior
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Hormones attach to receptors on the cell surface
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Hormones are released in response to external stimuli
The genes, which are confined to differential region of Y chromosome
only, are called
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Mutant
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Autosomal
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Holandric
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Completely sex-linked
The genes present on the differential part of Y chromosome are passed directly from father to son and are called as Holandric genes.
Which of the following is a feature of endocrine glands?
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Secrete vitamins
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Cease functioning after adolescence
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Begin functioning in adolescence
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Have ducts
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Ductless glands
- Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into the blood(ductless) rather than through a duct.
- The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands. Hence, Ductless gland is a feature of endocrine glands.
Which of the following hormones is derived from a single amino acid?
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Thyroxine
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Oxytocin
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Estradiol
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Epinephrine
Hormones can be classified based on their chemical nature like amino acid derivative hormones, peptide hormones, iodothyronines and steroid hormones. Hormones like epinephrine, norepinephrine, thyroxine are derived from amino acids. Epinephrine and norepinephrine are released by renal medulla. These are derived from single amino acid tyrosine. Thyroxine is released by thyroid gland. It is also derived from tyrosine amino acid by the addition of iodine.
How many of these hormones are lipid soluble? FSH, LH, Iodothyronine, Epinephrine, Aldosterone, Progesterone.
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Two
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Three
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Four
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One
Correct hormonal sequence in the rate of man is
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Oestrogen, Fs, progesterone
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Oestrogen, progesterone, FSH
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FSH, progesterone, oestrogen
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FSH, oestrogen , progesterone
The secretion of gonadotropin s (LH & FSH) increase gradually during the follicular phase and stimulates follicular development as well as secretion of oestrogens and progesterone.
Which of the following is TRUE regarding atrial natriuretic factor (ANF)?
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When blood pressure is increased, ANF is secreted which causes dilation of the blood vessels
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ANF is a peptide hormone
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ANF is secreted by the atrial wall of the heart
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All of the above
When the blood pressure is increased it results in excess of blood flow to the Heart. When the blood flow to the heart is increased it leads to the stretching of the atrial wall and the release of ANF (Atrial natriuretic polypeptide) from the atrial walls. The ANF is a polypeptide hormone which causes the vasodilation (dilation of blood vessels) and thereby decrease the blood pressure. Hence ANF is a peptide hormone which is secreted by the atrial wall of the heart when blood pressure is increased and causes dilation of the blood vessels which results in the decrease of the blood pressure.
Which of the following hormone is steroid?
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Epinephrine
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Thyroxine
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Estrogen
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Gonadotropin
Hormone responsible for the absorption of water in DCT is
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ADH
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ACTH
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Oxytocin
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Insulin
A paracrine hormone is
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a local hormone that acts on the cell that releases it.
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always acting on a wide variety of target tissues.
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a local hormone produced at one site but active at a different site in the body
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none of the above