How could you tell that a cell is a plant cell and not an animal cell

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

Approximately how many times does an average human heart beat in a lifetime?

Label the offspring chromosomes a1, a2, b1, or b2. circle any mutation chromosomes.