Which of the following is true of cells in batch culture? Cells never reach exponential growth rates. Metabolic wastes do not accumulate. Cells will not remain at a constant mass. New batches of media are added during culturing.

Option (3).

Explanation:

Batch culture may be defined as a type of culture which are refereed as stack and operated as influx of the reactant up to the maximum level. This technique is generally used to grow the micro organisms.

The cell mass do not decrease or increases as the cell divides in the batch culture. The new batch are added during the culturing process. The cell mass remains constant in batch culture.

Thus, the correct answer is option (3).