Modify the rate of enzyme activity.
cells
carbohydrates
nucleic acids

The correct answer is A. Cells. Carbohydrates are used in ATP and energy production and usually come in forms of breads or sugars, while Nucleic Acids are acids that encode and store information about the organism and are essential for the well being of the organism. They exist in 2 forms, the RNA and the DNA.

An autotrophic protist - they can perform photosynthesis and mainly consist of unicellular algae. they can be divided into number of systematic group according to the shape of their cell and the type of photosynthetic pigments they use.