Which of the following statements is true? endospores are easily stained in a gram stain. a cell can produce many endospores. endospores are for reproduction. a cell produces one endospore and keeps growing. endospores allow a cell to survive environmental changes.

Endospores allow a cell to survive environmental changes.

Explanation:

Endospores are tough dormant structure mostly formed by gram positive bacteria.They are formed in unfavorable environment and when there is deficiency of nutrients. They help the bacteria to survive even in adverse conditions for many years.

Endospore is formed when a bacterial cell divides inside the cell wall and one side engulfs the other side hence a single cell produces a single endospore. They are non reproductive structures and also resist gram staining because of the tough keratin outer coat. They contain the bacteria's DNA, ribosome and a large quantity of dipicolinic acid. Dipicolinic acid helps the endospores to remain dormant.

enzyme speed up the reactions

layer 3 is younger than layer 6.