The two primary functions of DNA are:

A.
to provide energy for the cell and replicate.
B.
to take in oxygen and remove carbon dioxide from the cell.
C.
to direct the activities of the cell and copy itself for new cells.
D.
to digest proteins and carry out photosynthesis.

Ageologist determines that a sample of a mineral cant be scratched by a steel nail but can be scratched by a masonry drill bit based on this information the sample mineral has to be softer than

Apea plant that is heterozygous for the tall phenotype can produce short offspring when self pollinating. which of the following explains why this occurs? a. segregation of allels b. condominance of traits c. polygenic expression of traits d. independent assortment of alleles

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis