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Science 9 Week Test
9 Week Test
33
Science
7th Grade
10/11/2011

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Cards

Term
Name the scientific method in order:
Definition
-State the problem
-Gather information
-Form a hypothesis
-Test the hypothesis
-Accept or change the hypothesis based on test results
Term
standard to which the outcome of a test in compared
Definition
control
Term
educated guess
Definition
hypothesis
Term
3 ways plant and animal cells differ:
Definition
-plant cells have a large vacuole
-plant cells have chlorophlasts
-plant cells have a cell wall
Term
Memorize the order: Cells-tissue-organ-organ system-organism
Definition
cells-tissue-organ-organ system-organism
Term
What is a virus?
Definition
a stand of hereditary material surrounded by a protein coating that can infect and multiply in a host cell
Term
Parts of the Atom (memorize):

~Proton + charge
~Nuetron 0 charge
~Electrons - charge
Definition
~Proton + charge
~Nuetron 0 charge
~Electrons - charge
Term
combination of substances in which the substances do not change chemically but keep their own individual properties
Definition
mixture
Term
compound that always contains hydrogen and carbon... come frome living or once living things
Definition
organic compound
Term
movement of materials into and out of cell without the se of energy
Definition
passive transport
Term
movement of materials from an area of high consentration to an area of less consentration
Definition
diffusion
Term
the diffusion of WATER
Definition
osmosis
Term
movement of material into and out of cells WITH the use of energy
Definition
active transport
Term
taking materials INTO the cell
Definition
endovytosis
Term
passing materials OUT of the cell
Definition
exocytosis
Term
the total of all chemical reactions in an organism
Definition
metabolism
Term
in sexual reproduction the joining of egg and sperm
Definition
feritlization
Term
List the 5 phases of mitosis in order:
Definition
interphase, prophase, metatphase, anaphase, and telophase
Term
The cell is growing and developing
Definition
interphase
Term
the nucleus starts to break down
Definition
prophase
Term
the chromosomes meet in the middle
Definition
metaphase
Term
chromosomes separtate
Definition
anaphase
Term
2 new cells pinch apart *plant cell- a plate forms
Definition
telophase
Term
How many chromosomes does each human body cell have?
Definition
46 or 23 pair
Term
reproduction involving 1 parent
Ex: budding and mitosis
(offspring are identical to the parent)
Definition
asexual reproduction
Term
Cell formed when an egg and sperm unite
Definition
zygote
Term
double the chromosomes number or chromosomes appear in pairs
Definition
diploid
Term
half the chromosome number (describes egg and sperm)
Definition
haploid
Term
sex cell division or formation
Definition
meiosis
Term
deoxyribonucleic acid: the hereditary codeof the nucleus of each cell
Definition
DNA
Term
part of the chromosome that holds the code for cerain traits
Definition
gene
Term
Adenine bonds only with what?
Cytosine bonds only with what?
Definition
Thymine
Guanine
Term
Thymine bonds only with what?
Guanine bonds only with what?
Definition
Adenine
Cytosine
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