Central vacuoles
A membranous sac is, as it says, a sac with a membrane. What it is specifically varies. Bronchi in the lungs are membranous sacs and the amniotic sac on a baby is membranous.
Central vacuole.
A vacuole.
Central vacuole .
A lysosome is a sac of digestive enzymes, used to break down monosaccharaides and disaccharides. Lysosomes are found in animal cells and are also called suicide sacs.
cytoplasm
The Amniotic Sac.
The amniotic sac is the membranous fluid filled bubble in which the developing foetus is suspended in utero.
Lysosomes
Peri 'cardial or Pericardium, is the membranous sac enclosing the heart.
The membranous sac that contains catalase is called a peroxisome. Peroxisomes are organelles found in eukaryotic cells that break down various molecules, including hydrogen peroxide, using enzymes like catalase. They also play a role in lipid metabolism and detoxification reactions.