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30 Cards in this Set

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What is the basic unit of all living things?
cell
Where do new living cells come from?
from reproduction of existing cells
What inside cells carries out cell functions?
organelles
What is the jellylike fluid in a cell called?
cytoplasm
What is the cell boss or control center of the cell called?
nucleus
What shape are animal cells
Varied, often rounded...no cell wall...only a membrane.
what is the shape of plant cells?
rectangular...rigid cell wall surrounds the cell membrane
Maintaining a stable internal environment
Homeostasis
Movement of water through a selectively permeable membrane from higher concentration to lower concentration
osmosis
random movement of molecules from higher concentration to lower concentration
diffusion
Pressure of wateragainst a plant cell wall.
Turgor pressure
Division of the nucleus of a cell
Mitosis
Process by which plants use light, water and carbon dioxide to produce glucose and Oxygen.
CO2 + H2O -> C6H1206 + 02
Photosynthesis
The opposite of photosynthesis, whereby cells use glucose and oxygen to produce energy and give off carbon dioxide and water.
cellular respiration
A trait an organism inherits from its parents
inherited trait
The part of a chromosome that governs a particular trait
gene
A diagram used to predict outcomes of genetic combinations
punnett square
A trait that appears if it inherits the gene for that trait from either parent...Shown by a capital letter
Dominant trait
A trait that appears only if it is inherited from both parents...shown by a lower case letter
Recessive Trait
A change in a gene caused by environmental damage or random error
genetic mutation
When the environment changes, such as the climate becoming colder or dryer
Environmental change
Natural Selection
Organisms with favorable heredity traits that are more likely to survive and reproduce than other organisms
Group of similar organisms that can have children together
species
Population
all the members of a species living in an area
Such factors as amount of sunlight, temperature, soil, moisture
nonliving environmental factors
All the organisms found in a single ecosystem
community
Temperate forests, tropical rain forest, grassland, desert, tundra
Biomes,or land ecosystems
Ecological Succession
Drastic events...such as fire, flood, tornadoes and hurricanes bring a series of changes to an ecosystem
The gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another
succession
Succession that begins in a place without any soil
primary succession