chemistry
what is the characteristics of acid
corrosive, pH below 7, sour taste
1 + 3 * 4 + 5
18
what is pathogen
pathogens is a microorganism which causes disease
Ti , Al, Cu, Au
whats the augmentation of those prefix
Titanium, Aluminum ,copper, gold
a + b =10
a - b = 2
a =6
b = 4
structure and function of red blood cells
a biconcave cell with no nucleus,
to carry oxygen and carbon dioxide all over the body
formula of single replacement reaction
A+BC→AC+B
expand
(x+2)(x+3)
x^2+5x+6
whats the vasuclar bundle and its functions
xylem: carry minerals and water
phloem: carry sucrose and amino acids
2Na(s)+Cl2(g)
2NaCl(s)
factorise
x^2 + 6x + 8
(x + 2)(x+4)
x^2 + 6x + 8
bloods components
red blood cells
white blood cells
plasma
platelets
Mg(s)+Cu(NO3)2(aq)
Mg(NO3)2(aq)+Cu(s)
2x(3 + 4)
6x + 8x
blood pathway through the heart
right atrium
right ventricle
pulmonary arteries
lungs
pulmonary veins
left atrium
left ventricle
aorta