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Short question and answers chapter 1 biology

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Short question and answers.
1. Define Science from ancient and today’s aspect.
In ancient times, science meant knowledge or learning. Today we define science as the study in
which observations are made, experiments are done, and logical conclusions are drawn to
understand the principles of nature. Scientific knowledge is classified into different branches
like, biology, physics, chemistry, mathematics etc.
2. Define Biology and enlist its divisions
The word biology consists of two Greek words bios meaning life and logos meaning thought,
reasoning and study. Biology is the study of living organisms. The study of living organisms also
provides information and remedies to human problems regarding health, food, environment etc.
Biology has three main divisions which study the different aspects of the lives of the major
groups of organisms i.e., Botany, Zoology and Microbiology.
3. Define Histology and Cell Biology.
The microscopic study of tissues of organisms is called histology. Whereas The study of the
structure and functions of cell is called cell biology. This branch also deals with the study of
cell division.
4. What are Fossils and their role in studying life.
Fossils are remains of the living things preserved by natural process. Fossils help the study of life
in the past and process of evolution. Paleontology is the study of fossils, which are the remains
of extinct organisms
5. Define Biotechnology.
The study of use of different techniques to manipulate the living organisms for the benefit of
mankind. Biotechnologist’s study and work to produce useful products through microorganisms.
Example: such as insulin, barley, brewer's yeast, bread etc.
6. Distinguish between Macromolecule and Micro molecules.
Macromolecule
Micro molecules.
The large organic molecules are with high
molecular weights are called
macromolecules
Example. starch, proteins, lipids etc.
The small biomolecules with low molecular
weight in living things are called micro
molecules.
Example. sugars, fatty acids, amino acids, and
nucleotides.
7. Define Organ and Organelles
Organ
Organelles

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In higher multicellular organisms more than
one type of tissue having related functions
are organized
together and make a unit, called organ.
Example. stomach is an organ specialized
for the digestion of proteins and for storing
food. Two major types of tissue are present
in its structure. Epithelial (glandular) tissue
secretes gastric juice for the digestion of
proteins.
Biomolecules assemble in a particular way
and form organelles. The organelles are
subcellular structures and when they
assemble, units of life i.e., cells are formed.
Example mitochondria are specialized for
cellular respiration and ribosomes are
specialized for protein synthesis.
8.Why Jabir Bin Hayyan and Bu Ali Sina famous for?
Jabir Bin Hayyan
Bu Ali Sina
He was born in Iran and practised medicine in
Iraq. He introduced experimental
investigation in
chemistry and wrote a number of books on
plants and animals. His famous books are
“Al-Nabatat” and “Al-Haywan”..
He is honoured as the founder of medicine
and called as Avicenna in the West. He was a
physician,
philosopher, astronomer and poet. One of his
books “Al-Qanun-fi al-Tib” is known as the
canon of medicine in West.
”.
10.Define genetics and inheritance?
The study of genes and their roles in inheritance is called genetics, Inheritance means the
transmission of characters from one generation to the other.
Example: Eye color, height.
11.Define biophysics.
It deals with the study of the principles of physic, which are applicable to biological phenomena,
for example there is a similarity between the working principles of lever in physics and limbs of
animal in biology.
12. What is studied in profession of farming?

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Short question and answers. 1. Define Science from ancient and today’s aspect. In ancient times, science meant knowledge or learning. Today we define science as the study in which observations are made, experiments are done, and logical conclusions are drawn to understand the principles of nature. Scientific knowledge is classified into different branches like, biology, physics, chemistry, mathematics etc. 2. Define Biology and enlist its divisions The word biology consists of two Greek words bios meaning life and logos meaning thought, reasoning and study. Biology is the study of living organisms. The study of living organisms also provides information and remedies to human problems regarding health, food, environment etc. Biology has three main divisions which study the different aspects of the lives of the major groups of organisms i.e., Botany, Zoology and Microbiology. 3. Define Histology and Cell Biology. The microscopic study of tissues of organisms is called histology. Whereas The study of the structure and functions of cell is called cell biology. This branch also deals with the study of cell division. 4. What are Fossils and their role in studying life. Fossil ...
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