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Science Revision for Year 11
All the stuff we need to know !!!!
34
Science
11th Grade
04/25/2008

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Cards

Term
Has a charge of +1
Definition
a proton
Term
has a charge of 0
Definition
a neutron
Term
has a charge of -1
Definition
an electron
Term
what is asexual reproduction
Definition
where only one parent is needed to produce offspring
Term
which is most harmful inside the body alpha, beta or gamma ?
Definition

alpha

Term
Infra red
Definition

Found next to red on the electro-magnetic spectrum, visible, has a long wave length, high frequency.

Term
what is resistance measured in
Definition
ohms
Term
what is an enzyme
Definition
a biological catalyst
Term
what does a catalyst do
Definition
it speeds up a chemical reaction
Term
where are protons and neutrons found
Definition
in the nucleus
Term

Continuos data 

Definition

data made of numbers that can keep going,

e.g. 12, 13.5, 14, 16...

Term
what does a chromosome do
Definition
carries genetic information from one generation to the other
Term
what is a cell
Definition
the basic structural and functional unit of all organisms
Term
what is DNA
Definition
the genetic material of all organisms that is wound into a double helix
Term
Catagoric data
Definition

data that can be arranged in catagories

e.g. Red, green, blue

Term
Ordered data
Definition
data that can be ordered
Term
mitosis is an example of sexual reproduction true or false
Definition
false
Term

Ammonia

Definition

NH3, produced using the Haber process

Term

Gregor mendel carried out cross breeding experiments on corn plants

true or false

Definition
false
Term

a human cell contains 24 pairs of chromosomes

true or false

Definition
false
Term
Haber process
Definition
when Hydrogen and Nitrogen is put under a pressure of 80 atmospheres, 200 degrees with an iron catalyst. 
Term

mitosis produces gametes

true or false

Definition
false
Term

mitosis produces 2 daughter cells that are different to the parent cell

true or false

Definition
false
Term
what is the dominant gene
Definition
the stronger one
Term
what is a reccesive gene
Definition
the weaker one
Term
what is an allele
Definition
different genes that control the same feature
Term
what is an exothermic reation
Definition
one that gives out heat
Term
what is an endothermic reaction
Definition
one that keeps in heat
Term
what is electric charge measured in
Definition
coulombs
Term
what does half life mean
Definition
the time it takes for half the isotopes to decay
Term
Mucus
Definition
Lines the throat, inside the nostrils and the stomach in order to protect the body. 
Term
Reflex
Definition
An invlountary movement not directed by the brain
Term

Water

Definition

H2O, 75% of the Earths surface, 70% of body mass, required for good health

Term
Ultra Violet
Definition
Found between blue and microwaves on the electro-magnetic spectrum. High wavelength low frequency. Used in Neon lighting.
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