Which of these organic molecules functions to speed up biological chemical reactions? a) lipids eliminate b) proteins c) nucleic acids d) carbohydrates

Answer is B) Proteins
 
Enzymes are the substances which help to speed up the biological chemical reactions by reducing the activation energy of the reaction. Enzymes are proteins. That's why we can get the answer as "B" among the given choices.

Mitochondria produce atp, a high energy compound. atp is used for all sorts of enzyme-mediated reactions, such as making proteins/nucleotides/etc, certain compounds cross the cell membrane, muscles move, etc.  without this source of energy, a cell will die. it will not be able to repair itself, defend against pathogens, etc.

In some developing nations the percentage of the animal protein from fish in the diet can be as high as 25 percent.  about 85% of fish caught is used for human consumption.  the remainder is converted into fishmeal and fish oil.