Which statement best describes genetic material? A. Genes are sections of proteins, which contain the codes for
chromosomes.
B. DNA is made up of many chromosomes, each of which codes for
a protein.
C. A chromosome contains a single DNA molecule, which contains
one gene.
D. Genes are segments of DNA, which is packaged in chromosomes.

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

Drag each tile to the correct box. arrange the phases of mitosis in the correct order. 1 (condensation of chromosomes) 2 (separation of chromosomes) 3 (formation of spindle fibers) 4 (alignment of chromosomes in the center of the cell) 5 (pinching of the cell membrane)