Which of the following decreases the activation energy necessary to initiate the
chemical change within the body?
amino acids
fatty acids
enzymes
nucleotides

Aboy with an extra x chromosome probably has which of the following syndromes?

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

What factors contribute to the effect an environmental toxin has on the human body?