Nucleotides are made of a phosphate group, a suger, and a nitrogenous base. which part of the molecule can differ between nucleotides?
a. the sugar
b. the phosphate group
c. the nitrogenous base
d. no change

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Deer cave cannot support photosynthesis is as not enough sunlight is present. in spite of this, it still has a complex food chain. what is the energy foundation of this food chain?

{answer found. it's (3 ) }which statement describes the cell cycle? (1)the cell cycle is a process in which one cell divides into four genetically different cells. (2)the cell cycle is a process in which one cell divides into two genetically different cells. (3)the cell cycle is a process in which one cell divides into two genetically identical cells. (4)the cell cycle is a process in which one cell divides into four genetically identical cells.