They are composed of cells and nuclei!
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Answer:
what is the question
Explanation:
tell we we will solve it within minutes
Answer:
RBC's?
Explanation:
I'm not sure if this is what is being asked but red blood cells made up about 80% of all of the cells in the human body. I hope this is what you need:)
The Burgess Shale is a rock formation that is known for having an abundance of soft bodied organisms preserved in shale. This formation is significant because it preserves organisms from the Cambrian Explosion. The Cambrian Explosion is a period in time that coincides with the Pre- Cambrian- Cambrian boundary around 542 million years ago. The period represents an unusually rapid radiation of organisms.
Fossils of the Burgess Shale are thought to be well preserved because most were thought to be buried fairly rapidly and in conditions that had little or no oxygen. The rate of decomposition is slowed in these conditions so soft body parts of the organisms were preserved for millions of years in the mud-stone that eventually became lithified to shale. <span />
Answer;
-Dyneins; kinesins
Organelles are moved within the cytoplasm by being pulled along microtubules by the motor proteins dyneins and kinesins.
Explanation;
-Microtubules are responsible for a variety of cell movements, including the intracellular transport and positioning of membrane vesicles and organelles, the separation of chromosomes at mitosis, and the beating of cilia and flagella.
-One of the major roles of microtubules is to transport membrane vesicles and organelles through the cytoplasm of eukaryotic cells. dyneins are motor proteins that move towards the minus end of the microtubule. Thus, they transport cargo from the periphery of the cell towards the center.
-Active movement of kinesins along microtubules supports several cellular functions including mitosis, meiosis and transport of cellular cargo, such as in axonal transport.
