BISC 102 Lecture Notes - Lecture 1: Ph, Organelle, Decomposer
Wednesday, August 26, 2015
Bisc 102
Ch 1
-Characteristics of being alive-
•Organization
•atom - the smallest chemical unit of a type of pure element (carbon, hydrogen,
oxygen)
•Molecules - group of joined atoms
•Organelle - molecules start working together. a membrane -bounded structure
that has a specific function within a cell (ribosomes)
•Cell - all of these working together. Have multiple organelles that are working
independently of each other.
•Tissue - specialized cells functioning together to achieve goal such as
regulating water intake.
•Organ - multiple tissue types working together.
•Organ system - organs connected physically of chemically working together.
(ex. small intestine does not touch mouth but they work together chemically)
•Organism - a single living individual
-Emergent properties- aruse at each level of biological organization. When the
components of an organism interact, they create new, complex functions. split
the workload and acquiring new functions. what you start with and what you end
with are completely different and have different functions.
•ex. capillary has a one function and the cells that make up the capillary have
their own functions too
•Energy Use
-Energy transfers are not really that efficient. Heat is lost during every transfer
-Producers - Organisms extract energy from non-living environments (sun, soil,
ect)
•Ex. Plants
-Consumers - Organisms that eat producers to obtain energy and nutrients
•Ex.
-Decomposers - consumers that obtain nutrients from dead and decaying material
•Maintenance of internal constancy (homeostasis)
-Maintaining an internal constant environment (ex. ph level)
-The process by which a cell or organism
•Ex. Aorta has a tiny receptor that helps if the aorta is stretched too far or is
collapsed
•Reproduction, growth, and development
-Reproduction can be asexual or sexual
•Asexual - one parent that make identical offspring
-Each spore may become a new organism. Not many will actually survive. It
has to compete with all other resources in that area. Survive best in
unchanging environments.
•Sexual - two parents. unique offspring
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Document Summary
Emergent properties- aruse at each level of biological organization. Energy transfers are not really that ef cient. Producers - organisms extract energy from non-living environments (sun, soil, ect: ex. Consumers - organisms that eat producers to obtain energy and nutrients: ex. Decomposers - consumers that obtain nutrients from dead and decaying material: maintenance of internal constancy (homeostasis) Maintaining an internal constant environment (ex. ph level) The process by which a cell or organism: ex. Aorta has a tiny receptor that helps if the aorta is stretched too far or is collapsed: reproduction, growth, and development. Reproduction can be asexual or sexual: asexual - one parent that make identical offspring. Each spore may become a new organism. It has to compete with all other resources in that area. Survive best in unchanging environments: sexual - two parents. unique offspring. Most plants and animals. two parents. genetic material from both mom and dad.
