I need help with a crossword and I cant figure out what the words are too these clues:

Possible opening found in the cell membrane

substance which makes up cell walls

granular material in the nucleus that thickens to become chromosomes

the endoplasmic reticulum is a network of....

structures responsible for the breakdown of the cell or cell parts

site in the mitochondria where food is converted to energy

compounds made by the ribosomes

membrane sacs which are responsible for packaging enzymes into lysosomes-2 words

unit which makes up all living things

a general name for a cell part

cylinder-shaped bodies used during cell division in animal cells

the cell membrane is a .... layer(thickness)

i really don't know the words that go with these clues