Tag: biomolecules

Quizzes (11) Questions (140)

Questions Related to biomolecules

Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

Purine  base with methyl substituents occurring in plants are

  1. Caffeine

  2. Theophylline

  3. Theobromine

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

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. 

Multiple choice chemistry biomolecules enzymes and hormones hormones coordination in human beings- chemical control

Which of following hormone is produced by testis?

  1. Progesterone

  2. Estradiol

  3. Testosterone

  4. estrone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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.

Multiple choice chemistry biomolecules enzymes and hormones hormones coordination in human beings- chemical control

Androgens are

  1. female sex hormone

  2. non steriod

  3. plant hormone

  4. male sex hormones
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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.

Multiple choice chemistry biomolecules enzymes and hormones hormones coordination in human beings- chemical control

Which of the following is a steroid?

  1. Insulin

  2. Vitamins

  3. Cytokinins

  4. Estrogen
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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.

Multiple choice chemistry biomolecules enzymes and hormones hormones coordination in human beings- chemical control

Which bond angle $\theta $ gives maximum dipole moments for triatomic molecule $XY _{ 2 }$ :-

  1. $\theta \quad =\quad 90^{ \circ }$
  2. $\theta \quad =\quad 120^{ \circ }$
  3. $\theta \quad =\quad 180^{ \circ }$

  4. Both 2 and 3
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

For a triatomic molecule XY2, the dipole moment is the vector sum of individual bond dipoles. When the bond angle theta is 90 degrees, the vector sum of the two bond dipoles is maximized because the angle creates a sharper resultant vector compared to a linear 180-degree arrangement where the dipoles cancel out completely.

Multiple choice chemistry biomolecules enzymes and hormones hormones coordination in human beings- chemical control

Deficiency of insulin in human beings causes:

  1. Blood coagulation

  2. Beri Beri

  3. Diabetes

  4. Dermatitis
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Deficiency of insulin in human beings causes diabetes.


 Diabetes is a disease in which your blood glucose or blood sugar levels are too high, either because insulin production is inadequate, or because the body's cells do not respond properly to insulin, or both.

Option C is correct.

Multiple choice chemistry biomolecules enzymes and hormones hormones coordination in human beings- chemical control

Point out the wrong statement about proteins.

  1. They are nitrogenous organic compounds of high molecular mass.

  2. They on hydrolysis by enzymes give aminoacids.

  3. Many of them are enzymes.

  4. They do not contain polypeptide .
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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.

Multiple choice chemistry biomolecules enzymes and hormones hormones coordination in human beings- chemical control

The Muscular physique of a male is due to the influence of the Hormone is called

  1. testosterone

  2. estradiol

  3. progesterone

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

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.

Multiple choice chemistry biomolecules enzymes and hormones hormones coordination in human beings- chemical control

The hormone used as an oral contraceptive is:

  1. Aldosterone

  2. Cortisone

  3. Progesterone

  4. Testosterone
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The hormone used as an oral contraceptive is progesterone. It is a female sex hormone and used to prevent pregnancy (progestin). 

It works by preventing the release of eggs from the ovaries (ovulation) and changing the cervical mucus and the lining of the uterus.

Hence, the option $C$ is correct.