Introduction To Biology Flashcards
Primary branches of Biology
Zoology (the study of animals),
Botany (study of plants) and
Microbiology (study of microorganisms)
Some areas of study in these branches:
- Cell Biology (studying cells)
- Histology (studying tissues)
- Anatomy (studying about gross structure of the body)
- Physiology (studying function)
- Biochemistry (studying biological molecules)
- Genetics (studying inheritance)
- Ecology (studying environment)
Issues pertaining to Biology
DOBBY ELF PEDDLER
Understanding biological Diversity
3.8 billion years ago. The first formed organisms are believed to be heterotrophic, anaerobic prokaryotes
10 to over 100 million species in the world
Dynamic relationship between living world and the inanimate world and each and every organism has a specific role in the environment for existence of the Biosphere.
Number of species
of plants, animals and microorganisms,
the diversity of genes
in these species,
the different ecosystems
on the earth such as deserts, rainforests and coral reefs
Understanding the human Body and its functions
histology, anatomy of the human body,one can gain the knowledge about the structure of the organs
understanding and appreciation of the organization of the human body
functions of different organ systems and the relationship between structure and functions
Sustainable use and Management of natural resources and Environment
Natural resources?
Natural resources are sources of materials and energy found naturally which are used in everyday life and for economic development.
natural resources are limited on earth
Increase of growth rate of human population, overuse of natural resources is taking place. It causes threat of depletion of natural resources.
Over exploitation of natural resources, various environmental problems arise such as;
BED
- Loss of Biodiversity
- Environmental pollution
- Desertification
Overcome the above problems management of natural resources and Environment should be practiced. Knowledge of Biology is useful to bring about remedies for the above problems.
Sustainable Food production?
Sustainable food production is the production of sufficient amounts of food for the human population using environmentally safe methods.
Sustainable Food production
7 billion and expected to be double in less than 40 years.
To maintain sustainable food production following methods can be applied,
which are based on knowledge in biology.
YIDDISH
- Production of high yielding varieties of plants and animals.
- Production of disease resistant plants and animal varieties.
- Improve the post harvest technological methods.
Understanding plant life
Plants are the primary producers
All the animals depend directly or indirectly on plants.
Human population is increasing we need to increase the productivity.
Therefore understanding plant function and biology is important to
produce high yielding plants,
disease resistant plants, etc.
Understanding diseases and causes
Healthy human body one should have the knowledge of causes of the diseases and their effects.
Non communicable diseases - cancers, heart diseases, diabetes, chronic renal diseases and
Communicable diseases - dengue, AIDS, etc.
Cancers- causes for this is not fully understood yet. Cancers are one of the leading causes of death .
AIDS- is a viral disease which is a serious and growing health problem worldwide.
(2000 SL)
Heart diseases- This is also a serious and growing health problem worldwide. Causes are not fully understood yet.
Chronic renal diseases- In Sri Lanka, recentlyCKDu has become a serious health problem.
Currently scientists are working on prevention, remedial measures and cures for such diseases
Solving some legal and ethical issue
IPC
immigration disputes.
parentage testing,
criminal investigations
All use DNA fingerprinting
The nature and the organizational patterns of the living world
Size, shape, form and habitats.
