The process of penetration occurs when viruses are taken into the cell followed by engulfment in a vesicle called a(n) .

Endocytosis.

Explanation:

Endocytosis is the process through which a cell acquires extracellular material, that is, the virus enters intracellular vacuoles. The cell creates a vesicle with its own membrane to surround the external agent and place it inside, that is, vesicles are formed in the plasma membrane, which are subsequently encompassed and internalized to the cytoplasm. Endocytosis plays a fundamental role in different cellular processes such as the immune response, intercellular communication, signal transduction and homeostasis, both cellular and of the whole organism.

haploid cells;

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.