what makes something alive? · 2017-09-12 · welcome to regents biology! ... notes biology life...
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Notes Biology life processes.notebook
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September 12, 2017
Sep 912:07 PM
Welcome to Regents Biology!Mrs. O'Brien Office: 132
Sep 101:31 PM
What makes something alive?Observe the objects on the lab table. Is it alive? What makes you say so?
Make a chart. Write down what you see and your observations. Why is it alive or not?
Notes Biology life processes.notebook
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September 12, 2017
Sep 101:43 PM
Characteristics of Living Thingsmade of cellsuse energyneed watermaintain homeostasis in a changing environmentreact and respond to changes in the environmentget rid of wastes that they make (metabolic wastes)their cells contain DNA that can be passed on to the next generationreproduceInteract with and effect the environment and other organisms.populations of organisms change over time (evolve)
Biology: The study of life, living organisms, and their interactions with other organisms and the environment.
Sep 101:48 PM
Life Processes
Life processes are biological/cellular activities that maintain homeostasis, keep the organism alive and propagate the species.
The life processes are metabolism, nutrition, transport, cellular respiration, synthesis, excretion, regulation, growth & development and reproduction.
Notes Biology life processes.notebook
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September 12, 2017
Sep 119:49 AM
1. Metabolism includes all the chemical reactions that maintain homeostasis. These metabolic (chemical) reactions occur in all the other life processes.
F
Sep 1112:21 PM
Nutrition
Heterotrophic Nutrition Autotrophic Nutrition
O
Consuming other organisms or pre-made organic molecules.
Steps: ingestion, digestion, absorption, egestion
The process of obtaining food and processing the food for use by the organism.
Two types:
Producing organic molecules from inorganic molecules
Photosynthesis uses energy from the sun.
Chemosynthesis uses energy from chemicals (other molecules)
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September 12, 2017
Sep 1112:27 PM
TransportF
Absorption of materials and movement of materials around inside a cell and inside and organism. Circulation or cyclosis.
Sep 1112:27 PM
Cellular RespirationO
Releasing ENERGY from food for use by the organism or cell.Two types: Aerobic and anaerobic
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Sep 1112:27 PM
SynthesisO
Small molecules (monomers) are combined (bonded) to form larger molecules (macro molecules)
The metabolic process that combines small molecules to build larger molecules.
Complex moleculesSmall molecules
Sep 1112:28 PM
Excretion F
Getting rid of metabolic wastes
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September 12, 2017
Sep 1112:28 PM
Regulation O
All activities that involve maintaining homeostasis and allows organisms to respond to changes in the environment.
Sep 1112:28 PM
8. Growth and DevelopmentF
Getting bigger (increase cell size or cell number) and changes that occur as an organism matures.
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September 12, 2017
Sep 1112:28 PM
ReproductionO
Making new organisms.
sexual reproduction
Two Types:
asexual reproduction
Why do biology teachers teach us meiosis?
Sex Cells!
Sep 189:12 AM
What does it mean to maintain homeostasis?
You drink when you are thirsty, your urine is more watery when you've consumed more fluid than you need.
Organisms must eat regularly.
Animals must breathe. They take in O2 and breathe out CO2.
Our pancreas secretes insulin into our blood after we eat a meal and secretes glucagon when we haven't eaten for a while.
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September 12, 2017
Sep 111:12 PM
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