Tag: biomolecules
Questions Related to biomolecules
Purine base with methyl substituents occurring in plants are
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Caffeine
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Theophylline
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Theobromine
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All of the above
A number of purine bases containing methyl substituents occur in plants and plant products and many of them have pharmacological properties. For example Theophylline is chemically 1,3-dimethylxanthine. It is found in tea. Theobromine occurs in cocoa. It is chemically 3,7-dimethylxanthine. Caffeine is present in coffee. It is chemically 1,3,7-trimethylxanthine.
The metals present in insulin and haemoglobin are respectively:
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$Zn, \ Hg$
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$Zn,\ Fe$
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$Co,\ Fe$
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$Mg,\ Fe$
Which of following hormone is produced by testis?
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Progesterone
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Estradiol
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Testosterone
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estrone
Testosterone is produced by testes. Testosterone, which is produced in the body by the male testes, influences men physically, emotionally and sexually. It is called the "king of hormones", testosterone is certainly the most important hormone when it comes to sexual characteristics in men.
Androgens are
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female sex hormone
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non steriod
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plant hormone
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male sex hormones
Androgens are male sex hormones. The main androgen is testosterone, and an additional androgen is dihydrotestosterone. Testosterone is secreted mainly by the testes, but also a little bit by the adrenal cortex. In some tissues, testosterone is chemically changed into dihydrotestosterone in order to have an effect.
Which of the following is a steroid?
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Insulin
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Vitamins
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Cytokinins
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Estrogen
Estrogen is a steroid. Estrogens are a group of steroid hormones that control the development and maintenance of an individual's feminine characteristics. Natural estrogens exist in men as well as women, and are found in higher amounts in women, especially in those of reproductive age.
Which bond angle $\theta $ gives maximum dipole moments for triatomic molecule $XY _{ 2 }$ :-
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$\theta \quad =\quad 90^{ \circ }$
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$\theta \quad =\quad 120^{ \circ }$
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$\theta \quad =\quad 180^{ \circ }$
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Both 2 and 3
Deficiency of insulin in human beings causes:
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Blood coagulation
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Beri Beri
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Diabetes
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Dermatitis
Deficiency of insulin in human beings causes diabetes.
Point out the wrong statement about proteins.
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They are nitrogenous organic compounds of high molecular mass.
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They on hydrolysis by enzymes give aminoacids.
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Many of them are enzymes.
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They do not contain polypeptide .
Proteins are nitrogenous organic compounds of high molecular mass which on hydrolysis by enzymes give amino acids. All proteins are enzymes. They do not contain polypeptide but are bonded by peptide linkage.
The Muscular physique of a male is due to the influence of the Hormone is called
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testosterone
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estradiol
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progesterone
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estrone
The muscular physique of a male is due to the influence of the hormone is called testosterone.
Testosterone is a male sex hormone produced by the testes that encourages the development of male sexual characteristics and stimulates the activity of the male secondary sex characteristics.
The hormone used as an oral contraceptive is:
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Aldosterone
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Cortisone
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Progesterone
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Testosterone
The hormone used as an oral contraceptive is progesterone. It is a female sex hormone and used to prevent pregnancy (progestin).