All species have: (A) a number of chromosomes that is unique to that species (B) a number of chromosomes that is dependent on the complexity of that species (C) exactly 12 chromosomes
per cell (D) some chromosomes that replicate and some chromosomes that do not.

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

When analyzing tree rings, what do scientists assume a thin ring indicates?

Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses