Which statement below best describes the role of DNA? A. It serves as the memory molecule in brain cells
B. It's the main supplier of energy for cells
C. It is used to store energy in the body
D. It carries the information for building proteins

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.

Actual age your first developed of age well comparison age refers to absolute age true or false

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.