Tag: hormones and metabolism
Questions Related to hormones and metabolism
Hormones can be composed of
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Amino acid derivatives
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Polypeptide proteins
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Steroid
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All of the above
Hormones are also grouped into three general structures as follows:
- Steroid hormones are fat-soluble molecules made from cholesterol. Among these are the three major sex hormones groups: estrogens, androgens and progesterones. Males and females make all three, just in different amounts. Steroids pass into a cell's nucleus, bind to specific receptors and genes and trigger the cell to make proteins.
- Amino acid derivatives, such as epinephrine, are water-soluble molecules derived from amino acids (the building blocks of protein). These hormones are stored in endocrine cells until needed. They act by binding to protein receptors on the outside surface of the cell. The binding alerts a second messenger molecule inside the cell that activates enzymes and other cellular proteins or influences gene expression.
- Insulin, growth hormone, prolactin and other water-soluble polypeptide hormones consist of long chains of amino acids, from several to 200 amino acids long. They are stored in endocrine cells until needed to regulate such processes as metabolism, lactation, growth and reproduction.
Hormones of adrenal cortex are synthesised from
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Tyrosine
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Tryptophan
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Cholesterol
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Glycoproteins
Steroid hormones are derived from
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Cholesterol
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Corticoid
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NAD
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Protein
Steroid hormones have a _______ effect.
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Slow and short term
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Fast and short term
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Fast and long lasting
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Slow and long lasting
Which one is not involved as secondary messenger in $Ca^{2+}$ mediated hormone
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cAMP
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DAG
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$IP _3$
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Phospholipase
Which of these is a steroid hormone?
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Epinephrine
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Thyroxine
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Estrogen
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Gonadotropin
Which of these is not a steroid hormone?
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Aldosterone
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Androgen
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Estrogen
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Thyroxine
Which of these is a glycoprotein?
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Erythropoietin
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Insulin
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Oxytocin
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Vasopressin
When all the peptide bonds of a protein have been broken down, the result would be
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Polypeptides
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Oligopeptides
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Peptides
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Amino acids
Name the chemical, deficiency of which causes Parkinson's disease while excess production may lead to schizophrenia.
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Dopamine
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Acetylcholine
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Endorphins
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Glycine