FCSE 3120 Lecture 1: BMS110 Section C

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BMS110 Section C
What is Life?
Chapter 1
Important Concepts
What Characterizes Life? (1.1)
What is Homeostasis? (1.1)
How do we Classify Life? (1.2)
Where do humans fit into the picture? (1.2)
What are the levels of organization? (1.2)
How do we study science? (1.3)
What is the scientific method? (1.3)
What is a Theory? (1.3)
Where do we obtain scientific information?
The 9 Characteristics of Life (1.1)
A high degree of organization
Containing materials only in living organisms
Acquiring and using energy
Maintaining homeostasis (constant internal environment)
Sensing the environment
Responding to external stimuli
Adapting to the environment
Altering the environment
Reproducing
The Characteristics of Life (1.1)
The 5 basic Characteristics of Life
Several basic characteristics allow us to distinguish between living things (biotic) and nonliving
objects (abiotic)
1. ____________________________________________
2. ____________________________________________
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3. ____________________________________________
4. ____________________________________________
5. ____________________________________________
1) Take in Energy & Material
Uses energy from the environment
1. Maintenance of organization requires energy
2. Energy sources = plant and animals
Herbivore - only eats plants
Carnivore - mainly eat animals
Omnivore - eat both plants and animals
3. Food -> Nutrients -> Molecules -> Broken down for energy and to make new molecules
4. Energy required to do work = movement/motion
2) Sense and respond to changes
Respond to internal and external stimuli
Adaptive modification to a particular way of life
3) Reproduce & Grow
Reproduction
1. Cells exist only from preexisting cells = Cell theory
2. All living things have parents
3. Creates a copy to ensure continuation of kind
4. Organisms only produce same organism
Exception: Mule, Liger, Zorse (males all sterile)
Growth and Development
5. Growth - increase in size and number
Egg -> Embryo -> Child -> Teenager -> Adult
6. Development - includes the repair after injury
Reproduction of a Cell
DNA contains Genes
DNA is duplicated to daughter cells
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Document Summary

Bms110 section c, what is life, chapter 1. Exception: mule, liger, zorse (males all sterile: growth and development, growth - increase in size and number. Eukaryote: eubacteria & archaebacteria, no nucleus, prokaryote, all single cell, archaean = ancient, biological classification is logical (1. 2, taxonomy identifies . Domesticus: human biology is structured and logical (1. 2, natural organization emerges from the structure of organisms. It is a system based on increasing structural complexity. Tissue - group of cells: organ - group of tissues/function together, organ system - several organs, organism, population, community. Limitations: scientific conclusions may change or be modified as our understanding and technology increases, science is a systematic study of nature, scientific method. _____________some aspect of nature: ask a question about the observation or identify a problem to explore, develop a ______________, make a prediction. Factors that can be changed in an experiment. Test whether and how they affect the outcome: common biological theories.

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