I need some biology help please,

My biology exam is tomorrow and i can't seem to find the answer to these few questions, :

1. The evolutionary history of a species is its ______
a.) extinction
b.) phylogeny
c.) biodiversity
d,) taxonomy

2.) The backbone of DNA molecule is made of which two components?
a.) deoxyphosphate molecules and deoxyribose sugars
b.)deoxyphosphate molecules and ribose sugars
c.) phosphate molecules and ribose sugars
d.) phosphate molecules and deoxyphosphate sugars

3.)Organisms need a way of storing energy because ____
a.) a cell can release only stored energy
b.) a cell can't always immediately use all the energy it gets
c.) a cell cannot create energy and must get it from somewhere else in the organism
d.) an organism often has times when no energy is used.

4.) The energy stored in glucose cannot be released by ____
a.) glycolysis
b.) respiration
c.) burning
d.) photosynthesis



Thanks (:

1)b
2)d
3)c
4)d

if you have any more questions search them on google & they will most likely have the answer!