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A Look Into the Characteristics of Life
Transcript of A Look Into the Characteristics of Life
a unicellular organism to external chemicals,
to complex reactions involving all the senses of multicellular
organisms. A response is often expressed by motion. Example:
- The leaves of a plant turning towards the sun
(The plants needs the energy from the sun. In response to the sun coming out, the plant turns
toward it for energy) Example:
- The response of the iris to bright light.
(When bright lights affect the sensitive cells of
the retina, the iris's response is to contract and become norrower, reducing the amount of light taken in. Characteristic 4 - Growth/Development The series of changes which animal and vegetable
organisms undergo in their passage from the embryonic state to maturity Example:
- When a human goes through puberty.
(Their bodies and bodily functions are changing and adapting to help them grow and develop into different phases in life. Example:
- When fungus grows.
(As a fungus takes in nutrients it
begins to grow and develop into
a more mature organism.) Organization Characteristic 1 - Example:
- Protists - Unicelluar
(Protists can be either multicelluar or unicellular but still function. Either the one cell has all the functions it needs, or the multi cells work to function together in an organized functions.) Being structurally composed of one or more cells — the basic units of life. Example:
- Animals - Multicellular
(Animals are multicellular organisms.
All the cells work with different purposes to allow the organism to
live. More than one cell is needed
in an animal for it exist so because it functions in more complex ways
than say, a monera. DNA Characteristic 2 - To be living, all organisms must have cells, but some of the cells also must have DNA. This is imperative because all organisms must have a genetic code that allows them to reproduce. Example:
- All Types of Life
(All kingdoms of life have DNA that holds their genetic code, and can pass on that code when they reproduce.) Evolution Charateristic 8 - Side Note:
(Along with DNA, all living organisms carry RNA, which facilitates the translation of
DNA into protein.) Reproduction Characteristic 3 - The process by which cells and organisms produce other cells and organisms of the same kind. Reproduction in which offspring are produced by a single parent, without the union of reproductive cells, is called asexual reproduction. Example:
- Sexual Reproduction
(The reproduction of organisms by the union of male and female reproductive cells, known as gametes. The gametes combine to create a type of cell that contains a copy of part of both the gametes DNA. Reproduction allows organisms to pass on their genetic code to offspring and continue a species.) Characteristic 7 - Example:
- Asexual Reproduction (Asexual reproduction allows for the product of an offspring without the union of reproductive cells. The splitting of cells, for example, is a type of asexual reproduction. One cell splits into two, the new cell being an exact copy of the first. This type of reproduction still allows for a copy of genetic code to be passed to further a species.) Male Otter Offspring Female Otter + = Evolution is the change in the inherited characteristics of biological populations over successive generations. Evolutionary processes give rise to diversity at every level of biological organisation. Example:
- Peppered Moths
(Originally peppered moths were equipped with a light color that protected them from predators, and before the industrial revolution, only 2% of that moth population was dark in color. After the industrial revolution, when pollution darkened light surfaces, 95% of the moth population was now dark, as new camouflage. They evolved to be able to hide from predators in a new setting. Characteristic 6 - Metabolism/Energy Metabolism is a process in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. Example:
- Basal Metabolism
(The amount of energy used to support the body's ongoing metabolic processes while the body is in a state of complete physical, digestive, and emotional rest.) Side Note:
Metabolism is the sum of all the chemical
reactions in the body. The different
reactions are called catabolic
(breaking down) and anabolic
(building) reactions.) Example:
- Structural Adaptation - Adaptation to an Organisms Structure
(The extensive root systems and the small leaves common to many desert plants are good examples of structural adaptation. Such roots enable the plants to collect more of the available moisture from their dry environment.) An inherited or acquired modification in organisms that makes
them better suited to survive and reproduce in a particular
environment. Adaptation Example:
- Functional Adaptations - Adaptations to an
(The ability to complete its growth cycle in a short growing season is a functional adaptation that enables a plant to survive in northerly latitudes.) Protist DNA Strand Cell Splitting Breathing Heartbeat Northern-Style Plants Desert Plant Peppered Moths
revolution to post. All organisms must have cells, but to be
living, they also have to have... An organism's genetic code must be passed
on to continue a species by... After a organism reproduces, one of the
offsprings' most basic parts of life is to... When an offspring grows/develops,
one of it's first functions is... Another characteristic of life is... To help them survive, whether
inherited or developed, all
organisms are born with... Tied undoubtedly into the characteristics
of life, is the long form of adaptation Organization DNA Reproduction Growth/Development Response Metabolism/Energy Adaptation Evolution The Characteristics
of Life.... Seperating the living,
from the non-living.... What makes this living?
And this non-living? That's what you'll find out with.... Example:
- Pesticide-Resitant Insects
(The more a pesticide is used, the greater the chance that insects will develop immunity to the chemical. Pesticide resistance is very common, and also usually happens quickly. Sometimes all it takes is a single generation. Imagine that a group of insects survives the pesticide and is able to reproduce. More likely than not, the offspring will be resistant to the pesticide from birth. Since many insects reproduce quickly, several generations can be born within months or even weeks. By the time a few generations have passed, all insects are likely to be resistant to the pesticide.)