The correct option is 3.
Enzymes are biological catalysts which speed up the rate of biochemical reactions inside the cells. Enzymes are very specific in action and they require specific conditions called optimum conditions for them to function optimally.
When the optimum conditions are not met, an enzyme's activity will be lowered or totally stopped.
Conditions that affect the optimum activity of an enzyme include: temperature, pH level and regulatory activity of regulatory enzymes and hormones.
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Answer:
As a cell grows bigger, its internal volume enlarges and the cell membrane expands. Unfortunately, the volume increases more rapidly than does the surface area, and so the relative amount of surface area available to pass materials to a unit volume of the cell steadily decreases.
Central dogma is done by all cells which involves the process of DNA replication, transcription and translation. DNA replication involves making of a new DNA molecule to copy the genetic information and takes place in the nucleus of a cell while Transcription is the formation of a mRNA from DNA molecule by RNA polymerase a process that takes place in the nucleus. Translation involves formation of polypeptides from the messenger RNA which takes place in the cytoplasm (cytosol) of both prokaryotic and eukaryotic cells in an organelle known as ribosomes.
