An enzyme is a protein
transports nutrients across a membrane
increases the rate of a chemical reaction
receives and sends signals across a cell
provides structure for the cell’s organelles

The given blank can be filled with that it increases the rate of a chemical reaction.

Explanation:

A substance or a component, which functions as a catalyst in the living species, monitoring the rate at which chemical reactions advances without itself getting changed in the entire process is known as an enzyme. The enzyme works by enhancing the rate of a chemical reaction. The biological procedures that take place inside the living species are the chemical reactions, and the majority of these are monitored by enzymes. In the absence of enzymes, several of these reactions would not occur at the desired rate.

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.

answer: all : )

explanation: