thylakoid
a thick fluid inside chloroplasts
The stroma of organs such as the liver and spleen is formed by connective tissue. This tissue provides structural support and helps maintain the shape and function of the organs. It also contains blood vessels, immune cells, and other support structures.
It prevents secondary fertilization by another sperm cell.
The cell membrane is a semi-permeable membrane that forms a boundary between the cell and the external environment. The vacuole is the storage area within the cell.
The inner most membrane is the fluid filled amniotic sac, next is the yolk sac, where the first blood cell originates. The allantois forms near the yolk sac, while the chorion surrounds all the other ones.
a thick fluid inside chloroplasts
Vesicle.
== == Stroma is the thick fluid within the chloroplast.I think you mean 'Stroma'. Stroma can refer to two things in Biology. Stroma is the fluid inside chloroplasts, the site of photosynthesis in all plant cells. It is also, however, the framework (like a skeleton) inside any biological tissue, cell or organ.
The cell membrane forms a boundary between the inside and outside of the cell. It is very flexible.
I believe you're talking about a vesicle (likely a transport vesicle). They're basically sacs of membrane.
Resembling to mitochondria, chloroplasts carry out their energy interconversions by chemiosmotic mechanisms in much the same way as the mitochondria do. The inner membrane surrounds a large space called stroma (analogous to the mitochondrial matrix) and contains various enzymes, ribosomes, RNA, and DNA. This inner membrane is not folded into cristae (as it is in mitochondria) and does not contain an electron-transport chain, instead, the electron-transport chain as well as the photosynthetic light-absorbing system and an ATP synthase are all contained in a third distinct membrane that forms a set of flattened disclike sacs, the thylacoids. The lumen of each thylacoid is though to be connected with the lumen of other thylacoid, thereby defining a third internal compartment called the thylacoid space, which is separated from the stroma by the thylacoid membrane.All this energy engineering of the plants, allows that the knobbed end of the chloroplast ATP synthase, where ATP is synthesized, protrude from the thylacoid membrane into the stroma, just as it protrudes into the matrix from the membrane of each mitochondrial crista.
Well i think what you are asking is what forms the thin membrane of a cell. and that is a Phospholipid bilayer where the outside surfaces of the bilayer are hydorphilic (heads) and the inside of the bilayer is hydrophobic (tails).
The cell membrane
Reticular connective tissue
Endoplasmic reticulum.
This is called the endomembrane system. ER, Golgi and the like.
The membrane that forms a sac around an animal embryo is called the amniotic sac. The embryonic sac is a bag of fluid inside of a woman's womb where the unborn baby develops and grows.