Class notes
BIOL 107 Chapter 1 Lecture Notes
- Course
- BIOL 107
- Institution
- Victor Valley College
This is a comprehensive and detailed note on Chapter 1 for Biol 107.
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Lecture 8/31/2019Biology- Science of living things
● Bio- Life
● Logos- Word of knowledge
A laboratory science- You live in your own unique lab (and you experiment all the time)
Living Things Are:
● Organized
● Acquire materials and energy
● Reproduce
● Respond to stimuli
● Homeostatic- stay in balance
● Have the capacity to adapt
Levels of Biological Organization 1
● A cell is the smallest unit of life
● A tissue is a group of similar cells that perform a particular functio
● Several tissues join together to form an organ
● Organs work together to form an organ system
Levels of Regional Organization 2
● Biosphere- Regions of the Earth’s crust,waters, and atmosphere inhabitated by living
organisms
● Ecosystem- A commuity plus the physical environment
● Commuity- interacting populations in a particular area
● Population- organisms of the same species in a particular area
● Organisms- an individual; complex individuals contain oragan systems
Levels of Biological Organization 3
● Organ system- composed of several organs working together
● Organ- composed of tissues functioning together for a specific task
Oraganisms acquire matter and energy
● Organisms need external material and sources to maitain their organization and carry on
life’s activities
● Energy is the capacity to do work
Organisms reproduce and ddevelop
● Life arises from life
● Genes are units of information within an individual’s DNA
● Reproduction is the process by which an organism makes more of itself
● DNA which directs cellular functions is duplicated prior to an organisms reproducing
Organisms respond to stimuli
● Organisms respond to external stimuli by moving toward or a boy from the stimuli
● Organisms use a variety of mechanisms for movement in response to stimuli
● Movement of an organism constitutes a large part of Its Behavior
● Behavior is directed toward avoiding injury, acquiring food or mating
Organisms are homeostatic
● Homeostasis (staying the same} refers to the requirement that organisms maintain a
relatively constant internal environment
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