Messages are slower acting and longer lasting. Plus they are classified as hormones, transported in the blood.
Homeostasis keeps the environment inside the cell always the same so that the cell doesn't have to keep making adaptations to match the ever-changing outside environment. <span />
<span>A. bundles of microtubules that separate to opposite poles of a cell - CENTRIOLES
B. prepares protein-packed vesicles for release outside of the cell - VESICLES
C. small storage sacs containing water, food, and waste - VACUOLES</span><span>
</span><span>D. rough and smooth organelle that produces protein, steroids, and lipids - ENDOPLASMIC RETICULUM
E. tiny sacs at the end of the ER which contain protein - GOLGI COMPLEX
F. chains of protein fibers that provide support and shape - CYTOSKELETON
G. powerful enzymes used to process cellular activity - LYSOSOMES & PEROXISOMES</span><span>
</span><span>H. whip-like structures on cells that are used for movement - FLAGELLA
I. produces and assembles proteins - RIBOSOMES</span>
<span>Shale rock is most likely to be changed to slate during regional metamorphism. it is a mix of mud, clay minerals, quartz and calcite. It is the most common sedimentary rock. this rock is formed by the deposition of slow moving water mainly in lake,river etc.Black skales are rich in unoxidised carbon.</span>