chapter 1 introduction to biology
TRANSCRIPT
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CHAPTER 1CHAPTER 1INTRODUCTION TO INTRODUCTION TO
BIOLOGY BIOLOGY
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BIO LOGY
GREEK
bios (LIFE)
logos(STUDY)
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WHAT IS BIOLOGY ?WHAT IS BIOLOGY ?The study of life or living thingsThe study of life or living thingsLiving things = organismsLiving things = organismsTells us about the structure and function & Tells us about the structure and function &
the interaction between the organisms and the interaction between the organisms and enviroment.enviroment.
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IMPORTANT OF BIOLOGY IMPORTANT OF BIOLOGY
Managing the enviroment
Food technology Biotechnology
Diseases
Agriculture
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BIOLOGY
PHYSIOLOGY
TAXONOMY
MEDICINE
BOTANY BIOCHEMISTRY
BIOTECHNOLOGY
GENETICS ANATOMY
FIELDS OF STUDY IN BIOLOGYFIELDS OF STUDY IN BIOLOGY
ZOOLOGY
ECOLOGY
MICROBIOLOGY
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THE STUDY OF BIOLOGYTHE STUDY OF BIOLOGY
Virology Bacteriology
Mycology Botany Zoology Anatomy Histology
Biochemistry Genetics
Ecology Microbiology
Physiology
Biological Fields Aspects of the studyCell Biology
Genetics Environmental study Biochemicals
Plants Animals Tissues
Structure of organisms Microorganism
Virus Bacteria
Fungi
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JOB OR CAREERS ?? JOB OR CAREERS ??
• Doctor• Nurses • Dentist • Forensic scientist • Nutritionist• Biomedical scientist• Pharmacists • Physiotherapists
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SCIENTIFIC INVESTIGATIONSCIENTIFIC INVESTIGATION
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SCIENTIFIC SKILLS SCIENTIFIC SKILLS Divided into 2 component: Divided into 2 component: Science process skillsScience process skills
Critical, analytical, creative thinking.Critical, analytical, creative thinking.Formulate questions and find out the answers Formulate questions and find out the answers
Manipulative skillsManipulative skillsPsychomotor skillsPsychomotor skills
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SCIENTIFIC SKILLSSCIENTIFIC SKILLSScience Process Skills
Observing
Classifying
Measuring and using numbers
Making inferens
Predicting
Using space-time relationship
Interpreting data
Defining operationally
Controlling variables
Communicating
Making hypothesis
Experimenting
The Manipulative Skills
a. Using and handling science apparatus and substances correctly
b. Keeping science apparatus and substances correctly and safely
c. Cleaning science apparatus in the correct way
d. Handling science specimens correctly and carefully
e. Drawing specimens, science substances and science apparatus correctly.
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SCIENCE PROCESS SKILLSSCIENCE PROCESS SKILLSWhat are the skills involved?
-Observing
-Controlling variables
-Making hypothesis
-Making prediction
-Experimenting
-Manipulative skills
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OBSERVATION, MAKING HYPOTHESIS AND PREDICTINGOBSERVATION, MAKING HYPOTHESIS AND PREDICTING
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SCIENTIFIC METHODSCIENTIFIC METHOD
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SCIENTIFIC METHODSSCIENTIFIC METHODS Diagram shows a flow chart of a scientific method.
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SCIENTIFIC METHODSSCIENTIFIC METHODS
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EXPERIMENTINGEXPERIMENTING
Preparing tissue culture of a plant
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SCIENTIFIC METHODSSCIENTIFIC METHODS
Identifying the problems by observing or explaining the phenomenon
Identifying and controlling the variables that affect the study or the observations
Formulating the hypothesis in order to predict the phenomenon observed
Planning the investiga-tion to test the hypothesis
Carry out the investigation that had been planned. The following steps are suggested to follow: (a) Collecting data (b) Analyse the data (c) Interpreting the data (d) Making conclusion
Writing a report
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SCIENTIFIC INVESTIGATIONSCIENTIFIC INVESTIGATION
MAKING HYPOTHESIS
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THE VARIABLES IN A SCIENTIFIC INVESTIGATIONTHE VARIABLES IN A SCIENTIFIC INVESTIGATION
VARIABLESManipulated variable
Responding variable
Constant variable
All the other factors that can affect the result of the experiment , which is controlled or fixed throughout the experiment.
The factor that changes in respons to the changes in the manipulated variable
The factor which is under study and varied throughout the
experiment in order to observe the corresponding changes in
the responding variable.
pH, enzyme concentration and substrate concentration is controlled or kept constant.
Constant or fixed variable
A factor which is kept constant / fixed or controlled throughout the experiment or investigation. In an experiment to investigate the proces of respiration in animal for example, the factors (fixed variables) that are controlled are temperature and atmospheric presure. The manipulated variable
It is a factor which is changed or manipulated in the experiment in order to test the hypothesis. This factor may be expected as the source or the factor under study for a certain phenomenon.The responding variable
It is the factor that changes whenever the manipulated variable changes.
Optimum temperature
The effect of temperature on enzyme activity
Temperature/0C
Rat
e of
rea
ctio
n
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PLANNING INVESTIGATIONPLANNING INVESTIGATION
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CONDUCTING EXPERIMENTCONDUCTING EXPERIMENT
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COLLECTING DATACOLLECTING DATA
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RECORDING DATARECORDING DATA
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RECORDING DATARECORDING DATA
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RECORDING DATARECORDING DATA
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WRITING A SCIENCE REPORTWRITING A SCIENCE REPORT
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Light MicroscopeLight Microscope
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IDENTIFYING THE PROBLEM
FORMING A HYPHOTHEIS
PLANNING THE EXPERIMENT
IDENTIFYING & CONTROLLING VARIABLES
CONDUCTING THE EXPERIMENT
COLLECTING DATA
ANALYSING DATA
INTERPRETING DATA
DRAWING CONCLUSION
WRITING A REPORT Pg 10
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SCIENTIFIC ATTITUDES AND SCIENTIFIC ATTITUDES AND NOBLE VALUESNOBLE VALUES
THE END
1.Having an interest and curiosity in recording the environment.
2.Being honest and accurate in recording and validating data.
3.Critical and analytical thinking skills.4.Objective and rational.5.Responsibility and accountability 6.Being confident and independent.7.Daring to try.