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taks bio review
review for bio part of taks
30
Science
8th Grade
03/19/2007

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Cards

Term
gene
Definition
The part of a chromosome that governs a particular trait
Term
punnett square
Definition
A diagram that is used to predict outcomes of genetic combinations.
Term
Dominate Trait
Definition
A trait that appears only if it is inherited from both parents...shown by a lower case letter
Term
recessive trait
Definition
A trait that appears only if it is inherited from both parents....shown by a lower case letter
Term
genetic mutation
Definition
A change in a gene caused by environmental damage or random error
Term
Environmental Change
Definition
When the environment changes, such as the climate becoming colder or dryer
Term
natural selection
Definition
organisms with favorable hereditary traits that are more likely to survive and reproduce than other organisms
Term
species
Definition
group of similar organisms that can have offspring together
Term
Population
Definition
all the members of a species living in an area
Term
nonliving environmental factors
Definition
such things as amount of sunlight, temperature, soil, moisture
Term
community
Definition
all of the organisms found in a single ecosystem
Term
Biomes or land ecosystems
Definition
Temperate forests, tropical rain forest, grassland, desert, tundra
Term
Ecological Succession or secondary succession
Definition
Drastic events such as wildfires, floods, tornadoes, hurricanes, tsunamis, that bring a series of changes to an ecosystem
Term
Succession
Definition
The gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another
Term
Primary succession
Definition
The gradual and orderly process of change in an ecosystem brought about by the progressive replacement of one community by another
Term
Cell
Definition
Basic unit of all living things
Term
From Reproduction of Existing Cells
Definition
Where do new living cells come from?
Term
organelles
Definition
Carries out cell funtions
Term
Cytoplasm
Definition
jellylike fluid inside a cell
Term
nucleus
Definition
cell boss, control center for the cell
Term
Shape of Animal cells
Definition
Varied, often rounded...they have no cell wall only a cell membrane
Term
What is the shape of plant cells
Definition
rectangular...has a cell wall to give it shape...cell membrane within the cell wall
Term
Homeostasis
Definition
maintaining a stable internal environment.
Term
osmosis
Definition
movement of water through a selectively permeable membrane from a region of less solutes to a region with more solutes
Term
diffision
Definition
random movement of molecules form higher concentration to lower concentration
Term
Turgor pressure
Definition
pressure of water against a plant cell wall
Term
Mitosis
Definition
division of the nucleus of a cell
Term
photosynthesis
Definition
Process by which plants use light, wate and carbon dioxide to produce glucose and oxygen
6CO2 + 6H20 -> C6H12O6 + 6O2
energy
Term
cellular respiration
Definition
the opposite of photosynthesis....process whereby a cell,plant or animal, uses glucose and oxygen to provide energy and gives off carbon dioxide and water
Term
inherited trait
Definition
trait that an organism inherits from its parents...tallness, eye color, etc
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