Tag: biomolecules

Quizzes (11) Questions (140)

Questions Related to biomolecules

Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

An organic compound has a triple bond and double bond. It can be tested by :

  1. Bromine water

  2. Beyer's reagents

  3. Fehling's solution
  4. Ammonical $AgNO _3$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The bromine test is a qualitative test for the presence of unsaturation (carbon-to-carbon double or triple bonds) and phenols. An unknown sample is treated with a small amount of elemental bromine in an organic solvent, being as dichloromethane or carbon tetrachloride. Presence of unsaturation and/or phenol in the sample is shown by disappearance of the deep brown coloration of bromine when it has reacted with the unknown sample. 
So, the correct option is 'Bromine water'.

Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

What is common between NAD and FAD?

  1. Both are coenzymes

  2. Both are derived from proteins

  3. Both acts as oxygen carriers

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

Nicotinamide Adenine Dinucleotide (NAD) and Flavin Adenine Dinucleotide (FAD) are coenzymes associated with reversible oxidation and decrease reactions. Then, these lessened coenzymes can give these electrons to some other biochemical response ordinarily engaged with a procedure that is anabolic (like the union of ATP).

So, the correct option is 'Both are coenzymes'.

Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

Match and choose the true option.

  1. $NaCl$ - Inorganic micromolecule
  2. ${H} _{2}O$ - Organic micromolecule

  3. Starch - Organic micromolecule

  4. Glucose - Inorganic macromolecule
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Organic molecules are made of chains of carbon atoms. Inorganic molecules are minerals like salts NaCl which held together by an ionic bond.
Water doesn't contain any carbon atom in its molecule.  So water is an inorganic compound. 
So the correct answer is A. 
Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology
Biomolecules are

  1. inorganic materials

  2. organic materials

  3. all the carbon compounds obtained from living tissues

  4. only DNA and RNA
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Biomolecules are basically all the carbon compounds obtained from the living tissue. All the major components that make up a living being that is the carbohydrate, proteins, lipids contain carbon in one form or the other.

Carbon is the structural as well as the functional unit of the basic framework of the cell.

So, the correct option is 'all the carbon compounds obtained from living tissues'

Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

Cellular micromolecules are

  1. Amino acids, Water, Minerals and Sugars

  2. Glycogen, Amino acids, Minerals and Nucleotides

  3. Water, Minerals, Nucleic acids, Amino acids and Nucleotides

  4. Sugars, Water, Minerals, Proteins and Nucleotides
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cellulose micromolecules are small in size and have low molecular weights which is less than 1000 daltons. They have simple molecular structure and often high solubility in the intracellular fluid. These include inorganic compounds such as water, mineral salts, and gases as well as organic compounds such as sugars, lipids, amino acids and nucleotides. The small molecules are the substrates and products of metabolism in the cell. The micromolecules act as building blocks for the macromolecules. 

Thus, the correct answer is option A. 

Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

All organic substances possess

  1. Carbon, Hydrogen and Oxygen

  2. Carbon, Oxygen and Nitrogen

  3. Carbon and Hydrogen

  4. Carbon, Hydrogen, Oxygen and Nitrogen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The organic compound contain the element carbon. The carbon atoms are bonded to form a chain or ring which serves as a skeleton to organic molecule. The most of their carbon atoms are also bonded to one or more hydrogen atoms. The organic compounds are chiefly formed by living organisms. They have large molecules with complex structure and high molecular weights. They include carbohydrates, lipids, proteins, nucleotides and nucleic acids
So, the correct answer is 'Carbon and Hydrogen'
Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

Which of the following is nucleo-proteinaceous?

  1. Chromosomes, viruses and ribosomes

  2. Centriole, viruses and lysosomes

  3. VIruses, chromosomes and vacuole

  4. Nucleus, GB, DNA
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nucleo-proteinaceous structures are composed of nucleic acids (DNA or RNA) and proteins. Chromosomes (DNA+histones), viruses (DNA/RNA+capsid), and ribosomes (rRNA+proteins) fit this description.

Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

About 98 percentage of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and

  1. Sulphur and Magnesium

  2. Magnesium and Phosphorous

  3. Calcium and Phosphorous

  4. Phosphorus and Sulphur
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Body needs phosphorus to build and repair bones and teeth.
  • It also helps nerves to function.
  • Calcium is important on blood clotting, muscle contraction, and strengthening bones. 
Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

Mg is important

  1. Component of cholorophyll

  2. Requirement for activation of hexokinase

  3. For protein synthesis

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

Magnesium is an important macronutrient required by plants in large quantity. Magnesium is a constituent of chlorophyll pigment and is required as an essential cofactor for all the reactions catalysed by kinase enzymes like hexokinase. Magnesium is also important for structural integrity of ribosomes. Ribosomes are the cell organelles involved in protein synthesis.

Multiple choice biomacromolecules biotechnology cell biology and biotechnology biomolecules biology

If in a man, normal glucose conc. increases to 190 mg/100 ml. Which of the following will occur?

  1. Extra glucose will get deposited in form of ketone bodies.

  2. Extra glucose is changed to glycogen and get stored in liver.

  3. Extra glucose will be excreted by kidney.

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

The blood glucose level in body is tightly regulated by a number of mechanism. The normal blood glucose level in humans should not exceed 140 mg per decilitre after meals and is maintained between 70 to 100 mg per decilitre under fasting conditions without food. Glucose is a precious metabolite and, hence, is actively reabsorbed by the kidney tubules. Any excess quantity of glucose is converted into glycogen which is stored in liver and muscles. Any further excess is converted to fats and stored for long term deposit. In humans and most other mammals, acetyl CoA formed in the liver during oxidation of fatty acids may enter the citric acid cycle or may be converted to ketone bodies, i.e., acetoacetate, $\beta$-hydroxy-butyrate and acetone for export to other tissues. Overproduction of ketone bodies can occur in conditions of severe starvation and in uncontrolled diabetes.