Which type of cell might have been the first one to evolve and explain why this may have been the first.
The hypothesis that eukaryotic cells evolved from a symbiotic<span>
association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.</span>
Compare and contrast eukaryotic cells with prokaryotic cells.
Eukaryotic cells contain membrane-bound organelles, including a nucleus. Eukaryotes can be single-celled or multi-celled, such as you, me, plants, fungi, and insects. Bacteria are an example ofprokaryotes. Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle.
C ,D,E the endocrine system uses chemical messengers / hormones compound that is produced in one tissue, released into circulation, then has an effect on a different organ ,it doesnt act alone but cooperate with nervous or other systems and then interact with other cells. Hormones are specific target cells
To know more about hormones here
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Prophase, metaphase, anophase, telophase.
Answer:
A. 1:2:1 Ratio
Explanation:
Because there are 2 of the same physical appearances and 2 different ones… therefore it’s be 1 for the first box 2 for the identical ones and 1 for the bottom right box: 1:2:1
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If you're referring to rainfall, much of the water evaporates eventually after reaching Earth's surface. If it falls in the ocean of course that is not usually the case.