INTRODUCTION TO BIOLOGY Chapter 1 INTRODUCTION TO BIOLOGY

A.What is biology? B.What are the two divisions of biology? Monday Bellringer 08/14/2017 Write question and answer in bellringer section A.What is biology? B.What are the two divisions of biology?

At the end of the lesson, student should be able to : State what the study of biology Explain the important of Biology List the different field of study in Biology List careers related to Biology state various way of studying Biology know how scientific investigation has been carried out

Biology….. What is ‘Biology’ mean??????? From Greek words ~~~ bios - life logos - study Study of living organism Study of biology~ study of living things, their environment, and the interaction between them

Biology Study the origins and history of life and once- living things - evolution Study the structures of living things - anatomy Study how living things interact with one another - ecology Study how living things function - physiology

Importance of biology Enable us to : Finding cure for diseases, new meds Preserve the environment (help endangered animals) Appreciate the diverse variety of living things Develop technologies –heart valves, prosthetic limbs Improve agriculture

Medicine and public health KNOWLEDGE OF BIOLOGY Medicine and public health research Agriculture Industry

Field of study in biology virology Study of viruses anatomy Study of org. structure Genetic Study of heredity entomology Study of insects ecology Study of envi. and relationship zoology Study of animal Field of study in biology microbiology Study of microorg. embryology Study of embryonic dev. biochemistry Study of biochemical process in body botany Study of plant bacteriology Study of bacteria taxonomy Study of classifying plants & animals mycology Study of fungi histology Study of tissues

Career related to biology Medicine Biotechnology Agriculture industry

Characteristics of Life To be considered alive = an organism must have or had all of these characteristics A characteristic is a trait, feature, or quality

The Characteristics of Life Made of one or more cells Cells are the basic unit of structure and function in all living things. Living things can be unicellular (one cell) or multicellular (many cells). Copyright © McGraw-Hill Education Introduction to Biology

Displays organization

Or new cells and structures Changes over the lifetime GROW AND DEVELOP GROWTH- adding mass- Or new cells and structures Development- natural Changes over the lifetime Of an organism

Reproduce Reproduction = the production of offspring Organisms that can breed with one another and produce fertile offspring are know as a species. Reproduction is not essential for the survival of an individual, but it is essential for the continuation of the species.

Ways of studying biology Science process skill Promote thinking Manipulative skill Psychomotor skill via conduct experiment in scientific investigation Scientific skill

Any examples?

NEED energy from food. Most plants and some unicellular organisms use light energy from the Sun to make their own food. Organisms that cannot make their own food get energy by consuming other organisms.

GROWTH And Development Made of cells Reproduce Displays organization

Respond to stimuli Anything part of the environment that causes some reaction by the organism is a STIMULUS You lean on stove which is still hot – What happens? You move your hand away – this is the response or reaction to the stimulus

Scientific investigation Identify problem Observed situation Identify variable State problem Forming hypothesis -make general statement about relation between manipulated variable and responding variable Plan the experiment

REGULATE INTERNAL CONDITIONS TO MAINTAIN LIFE Maintain homeostasis REGULATE INTERNAL CONDITIONS TO MAINTAIN LIFE

conduct the experiment Analysis and interpreting data Collecting data Analysis and interpreting data Forming conclusion Hypothesis is accepted if result support the hypothesis while rejected if the result do not support the hypothesis Writing a report

examples Hunger Thirst Temperature Blood sugar Water balance Blood pH

Lets do a scientific investigation Situation 2 Situation 1

Adaptation over time Any inherited characteristic or trait that results from changes in a species over time Helps them survive so best genes are passed on

Recent examples Lactase persistence- recent dairy consuming people – maintain lactase which usually is no longer produced after age 1 Increase of sickle cell carriers in certain areas – protects them from malaria

Bitter taste receptors help protect you from ingesting dangerous or deadly plants, substances

Science notebook pages 2-3 Exercise your brain!!!! Science notebook pages 2-3