Answer:
Cell membranes are semi-permeable, which works like a sieve that determines what enters and leaves the cells.
Explanation:
It is semi-permeable and it allows molecules to diffuse inside.
<em>Feel free to mark it as brainliest :P</em>
Answer:
The external coverings of diatoms are made up of frustule which contains chloroplasts. Chloroplast is a organelle that has chlorophyll pigment that captures light energy from the sun and utilize it for photosynthesis. Slime molds comes under category of fungi. Their cell wall is made up of cellulose. They undergo spore formation, their spore sac get rupture as cellulosic layer is light and releases spores which settles on the decaying plant matter.
A heart attack happens when a coronary artery becomes out of no where in a instant blocked and it stops the flow of blood to the heart muscle and starts to damage it.
Answer:
Los glóbulos rojos se forman en la médula ósea roja de los huesos. Las células madre en la médula ósea roja llamadas hemocitoblastos dan lugar a todos los elementos formados en la sangre.