Are found in the stroma of chloroplasts small coins that provide energy. numerous mitochondrial membranes. stacks of thylakoids called grana. organelles called eukaryotes

The correct answer is small coins that provide energy

Explanation:

Small coins structures are found in chloroplast which are termed as thylakoid.There are stacks like arrangement of thylakoids within the granum.

    The Surface area of thylakoids is being increased by grana as a result more light is absorbed by the chloroplast.

   The thylakoid of granum is the site of light reaction.

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.

your answer is "the 1950's"