Relation of Biology with other sciences: where life meets numbers, forces and money

Biology does not work alone

Your book says Biology is closely linked with Chemistry, Physics and Earth Sciences. These links help us understand life processes, environmental interactions and the complexity of living organisms.

Each linked field joins two names. Biochemistry is the chemistry of living systems. Biophysics applies the principles of Physics to life. Computational Biology uses mathematical models, algorithms and computer simulations.

Biogeography maps where organisms live and how climate change shifts them. Biostatistics analyses data about living things. Biotechnology uses organisms to make useful products. Bio-economics weighs the cost and profit of biological projects.

Fig. 1.1 puts Biology in the centre, joined to Chemistry, Physics, Geography, Statistics, Maths, Computer and Economics. Each join is a new field.

Key terms

Biochemistry

Structure and reactions of chemicals in living systems.

Biophysics

Principles of Physics that apply to biological processes.

Computational Biology

Models, algorithms and simulations to understand living systems.

Biotechnology

Living organisms or their parts make useful products.

Short questions with model answers

1. Q1. Exercise A Q3: "Insulin made through bacteria is an example of the technique of" what?

   • Living bacteria are used as a tool.
   • The product treats diabetic patients.

   Biotechnology, option (b).

2. Q2. Short question B5: what is Computational Biology?

   • Name the tools.
   • Name the aim and an example.

   The use of mathematical models, algorithms and computer simulations to understand biological systems, such as amino acid sequences.

Common mistakes

• ✗ Calling insulin from bacteria Biochemistry.

  ✓ Using organisms to make a product is Biotechnology; Biochemistry studies the reactions.

• ✗ Mixing Biogeography with Ecology.

  ✓ Biogeography is distribution across regions of the world; Ecology is relationships with the environment.

• ✗ Thinking Bio-economics is only about money.

  ✓ It studies organisms from an economic view, e.g. cost and profit of a new crop variety.

MCQs

1. 1. Studying the reactions of photosynthesis is an example of:

   1. (a) Biophysics
   2. (b) Biochemistry
   3. (c) Biostatistics
   4. (d) Bio-economics
   Show answer

   (b) Your book names photosynthesis and respiration as Biochemistry examples.

2. 2. The rules of lever and motion in bones and joints belong to:

   1. (a) Biogeography
   2. (b) Biotechnology
   3. (c) Biophysics
   4. (d) Biochemistry
   Show answer

   (c) Physics principles applied to biological processes.

3. 3. How climate change affects where organisms live is studied in:

   1. (a) Biogeography
   2. (b) Computational Biology
   3. (c) Bio-economics
   4. (d) Biophysics
   Show answer

   (a) Distribution across geographical regions (p. 9).

4. 4. Calculating the cost and profit of producing a new crop variety is:

   1. (a) Biostatistics
   2. (b) Biotechnology
   3. (c) Biogeography
   4. (d) Bio-economics
   Show answer

   (d) Organisms from an economic point of view (p. 10).

5. 5. Statistics used to analyse data on living organisms is:

   1. (a) Biochemistry
   2. (b) Biostatistics
   3. (c) Biophysics
   4. (d) Bio-economics
   Show answer

   (b) Biostatistics serves research, healthcare and public health.

Quick revision

• Biology links with Chemistry, Physics, Earth Sciences, Maths, Statistics and Economics.
• Each link names a field: Biochemistry, Biophysics, Computational Biology, Biogeography, Biostatistics, Biotechnology, Bio-economics.
• Learn one book example for each: insulin from bacteria is Biotechnology.