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Biology Final
Mrs. Watkins Biology Midterm Study Guide
22
Biology
10th Grade
12/19/2010

Additional Biology Flashcards

 


 

Cards

Term
biosphere
Definition

consists of all the parts of the planet that are inhabited by living things.


includes most regions of land; most bodies of water, and the atmosphere to an altitude of several kilometers. 

Term
organisms
Definition
individual living things
Term
species
Definition

a distinct form of life

 

more than 1.5 million species and new ones are discovered daily

Term
classification
Definition
organizing similar species into larger groups
Term

domains:

bactreia and archaea

Definition

broadest category used to classify life forms

 

very tiny &unicellular (1 cell) no nuclei (prokaryotic) 

Term
organ system
Definition
unit of multiple organs that together perform a vital body funcion
Term
homeostasis
Definition
internal stability or "steady state" maintained by the body
Term
work of a scientist
Definition

[image]

Term
biology is...
Definition
the study of life 
Term
experiment is...
Definition

controlled- an experiment that tests the effect of a single variable

 

 

Term
solution is 
Definition
a uniform mixture of two or more substances 
Term
element
Definition
pure substance that cannot be broken down into other substances by chemical means.
Term
chemical combination of 2 or more elements
Definition
compound!
Term
nucleus?
Definition
an atom's protons and neutrons are tightly packed together and forming a central core called the nucleus
Term
isostope
Definition
one of several forms of an element, each containing the same number of protons in their atoms but a different number of neutrons.
Term
in chemical reactions...
Definition

the formation of one or more new substances occurs


some chemical reactions absorb more energy than they release, while others release more energy than they absorb

Term
reactants are...
Definition
the starting materials for the reaction
Term
products are...
Definition
the ending materials
Term
3 parts of an atom
Definition

protons

electrons

neutrons

Term
covalent bond
Definition
forms when two atoms share electrons
Term
pH of 7
Definition

pure water


middle of acidic and basic


(zero=more acidic)

(14=more basic)

Term
water is...
Definition
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