BIOSYSTEM
BI1201 Introduction to Life Sciences and Technology
School of Life Sciences and Technology
Contents
System
Living System Biosystem Characteristics of Biosystem Models in Biosystem
BI1201 Pengantar Sains dan Teknologi Hayati
What’s System?
A system is a set of components that :
function and interact in some regular and theoretically predictable manner;
can be isolated for the purposes of observation and study.
System = Elements + Interconnection + Function
Basic Elements of System
• Input of things as matter, energy, of information into the system
Input
• Throughputs of matter, energy, or information within the system at certain rates
Flow
• Storage areas, within a system where energy, matter, of information can accumulate for various lengths of time before being released
Stock
• Output of certain forms of matter, energy, or information that flow out the system into sink in the environment
Output
BI1201 Pengantar Sains dan Teknologi Hayati
What’s Living System?
• Living system is an open self-organizing living things that
interact with their environment,
maintained by flows of information, energy and matter.
• Example:
– Organism – Ecosystem – Etc.
Living System
Biosystem
Hierarchy in Biosystem
Hierarchy in biosystem spans from DNA (blueprint of living system) to Biosphere.
Yet, the smallest autonomous structural, functional and biological unit of life is
cell .
Characteristics of Biosystem
• Since Biosystem is a kind of SYSTEM, then we can distinguish its characteristics by identifying its
elements, interconnection and function.
• Let see Ecosystem as our example.
REMEMBER!!!
System = Elements + Interconnection + Function
Ecosystem’s Elements
Abiotic Components:
Physical and Chemical Factors Sunlight (the ultimate energy input )
Precipitation
Temperature
Nutrients
Biotic Components:
Organisms
Bacteria
Fungi
Plants
Animals
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Ecosystem’s Elements: Input &
Output
The ultimate INPUT
Output
Output Output
Output
Output
Ecosystem’s Elements: Flows
Flows in ecosystem can be found in many kind of cycles (e.g.: nutrient cycles)
Phosporus Cycle
BI1201 Pengantar Sains dan Teknologi HayatiEcosystem’s Elements: Flows
Ecosystem’s Elements: Flows
Carbon Cycle
BI1201 Pengantar Sains dan Teknologi HayatiEcosystem’s Interconnection
• An example of
interconnection in ecosystem is pointed out by the trophic cascade hypothesis.
• Other examples:
–Symbiotic organisms – Predator-prey
relationship
–Etc.
Ecosystem Characteristics: Functions
• Function or purpose is an embedded property of a system.
• Ecosystem functions are the
biological, geochemical and physical processes and components that take place or occur within an ecosystem, sometimes’s called ecological
processes.
• Example of ecological processes:
– Predation – Symbiosis
– Water treatment by wetland ecosystem – Etc.
BI1201 Pengantar Sains dan Teknologi Hayati
Review
To see how far you understand the materials, you can check by
reviewing and answering these questions.
1. What is system?
2. What is living system/biosystem?
3. Explain how we can distinguish the characteristics of biosystem!
4. Why is solar energy being called as the ultimate input for
ecosystem, as well as biosystem
as a whole?
Assignment
BI1201 Pengantar Sains dan Teknologi Hayati
1. Let’s say that we live in an ecosystem called “Bandung City”.
a. What will happen if all decomposers in Bandung are dead?
b. What will happen if all trees
in Bandung are cut down?
2. Look at the diagram and explain “why” it’s called
system. Describe which are the elements,
Submission
• Submit your assignment individually via e-mail to [email protected]
– File type : pdf
– File name : PSTH_A2_NIM
e.g. PSTH_A2_16107055
– Mail subject : PSTH A2
– Deadline : February 2 nd , 2015 (Engineering) February 6 th , 2015 (Science)
23.59 WIB
• Only submission with relevant format will be
evaluated.
Reading Sources
Neil A. Campbell, Jane B. Reece and
Lawrence G. Mitchell. Biology Chapter 3 (page 1-20)
G. Tyler Miller Jr. Living in the
Environment Chapter 4 (page 64-94)
Thank you ...
BI1201 Pengantar Sains dan Teknologi Hayati
