What’s Living, what’s Non-living - Phoenix College › Biology › amarti-subirana › BIO...
Transcript of What’s Living, what’s Non-living - Phoenix College › Biology › amarti-subirana › BIO...
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What’s Living, what’s Non-living
• Composed of matter• Organized in atoms• Living on Earth• Engaging metabolism• Engaging
reproduction• DNA present
• Composed of matter• Organized in atoms• Living on Earth• Not engaging
metabolism• Not engaging
reproduction• DNA absent
Non-LivingLiving
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What’s Living, what’s Non-living
Metabolism?How living organisms master to live. Metabolism is the ability to acquire, use and transform energy in order to perform cellular functions, to grow, and to reproduce
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What’s Living, what’s Non-living
Living on Earth?
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What’s Living, what’s Non-living
How about viruses?
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What’s Living, what’s Non-living
DNA present?
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Shared Characteristics of LifeLife emerges at the level of cells, which are organized units
of life
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Shared Characteristics of Life Common Features of Cells
• Cells can exist as independent organisms.• Cells are composed of macromolecules that
participate in identical or similar metabolic processes or chemical reactions.
• In all cells, genes are stored in DNA written in the same chemical code
• All cells use the machinery of DNA transcription and RNA translation to produce protein molecules
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Shared Characteristics of Life Common Features of Cells
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Shared Characteristics of Life Common Features of Cells
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Shared Characteristics of Life Common Features of Cells
Pancreatic Secretory Cell
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Shared Characteristics of LifeLiving organisms are organized in a certain fashion
• 1) Biosphere: all the environments on Earth inhabited by life
• 2) Ecosystem: made of non-living and living components —deserts, prairies
• 3) Community: all the organisms living in a particular ecosystem
• 4) Population: all the individuals of a specie living in a specific area — human population
• 5) Organism: an individual living entity — a bird
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Shared Characteristics of LifeLiving organisms are organized in a certain fashion
• An organism is constituted by several organ systems
• Organ systems include several organs
• Organs are made of different tissues
• A tissue is an arrangement of cells
• Cell parts are made of macromolecules
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Which group is correctly arranged according to size?
Organ<
orga
nism< t
...
Orga
n sys
tem< o
rgan...
Cell< tis
sue<
orga
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m< cell
25% 25%25%25%1. Organ< organism< tissue
2. Organ system< organ< tissue
3. Cell< tissue< organ4. Tissue< organism< cell
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Shared Characteristics of LifeLiving organisms are interdependent
• Producers (plants and other chemo- or photosynthetic organisms) are able to synthesize macromolecules that consumers will intake and digest
• Decomposers break down organic matter (dead or alive)
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Shared Characteristics of LifeLiving organisms sense and respond to change
Homeostasis is the ability of an organism to maintain its internal environment conditions within tolerable limits
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Homeostasis is the organism’s ability to maintain the conditions of their internal
environment within ____ limits.
High
Non-to
lerab
le
Toler
able
Low
25% 25%25%25%1. High2. Non-tolerable3. Tolerable4. Low
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Shared Characteristics of LifeLiving organisms reproduce, grow, and mutate
A mutation is an alteration of hereditary instructions. It may have an adaptative value, which may lead to diversity
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Diversity of Life