Download App

Biomolecules — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBiomolecules2 Marks
Question
Which two changes does a chemical compound undergo? Explain each with example.
✓

Answer

Chemical compounds undergo following two types of changes: Physical changes: are those in which shape of a molecule or a substance changes without breaking of bonds or change in state of matter, e.g., melting of ice in water. Chemical changes: are those changes in which the bonds are broken and new bonds are formed. e.g.,
  1. $\text{Ba(OH)}_2\ \ \ \ \ +\ \ \ \ \ \text{H}_2\text{SO}4\xrightarrow{\ \ \ \ \ \ \ }\text{BaSO}_4 + 2\text{H}_2\text{O}\\\text{(inorganic chemical reaction).}$
  1. Hydrolysis of starch into glucose (organic chemical reaction).

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Biomolecules→Biomolecules — all question types→BIOLOGY STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Bring out the differences between Chlorophyceae and Rhodophyceae.
→
What is the source of energy for muscle contraction?
→
How do fight or flight hormones prepare our body to fight emergency?
→
What is stroke volume? What is its relation with cardiac output?
→
Anupriya visited her biology teacher who was hospitalized for setting in artificial pacemaker procedure in her body. She felt surprised to saw those things and asked the doctor about the need for this procedure. He politely explained her that it is related to heart diseases.
  1. What is a use of natural pacemaker in the body?
  2. Why is SA node called the pacemaker?
  3. What values reflects from Anupriya's character?
→
What are occupational respiratory disorders? What happens in this disorder?
→
Which one of the following characters is not typical of the class mammalia?
  1. Seven cervical vertebrae.
  2. Thecodont dentition.
  3. Alveolar lungs.
  4. Ten pairs of cranial nerves.
→
Distinguish between cranial nerves and spinal nerves.
→
  1. What name is given to those archaebacteria, which live in (i) extreme salty areas and (ii) hot springs, respectively?
  2. What facilitates them to live in such harsh habitats?
→
Mention the properties of transport proteins of the membrane.
→