Differences
1. Meiosis occurs in two divisions, resulting in four haploid cells. Mitosis, however, occurs in one division, resulting in two diploid cells.
2. Mitosis produces body cells, which are used for purposes of growth and repair. Meiosis, however, produces gametes, which are used in sexual reproduction.
3. Mitosis produces two identical daughter cells, but meiosis increases genetic variation by undergoing crossing over an independent assortment. The resulting daughter cells of meiosis are genetically unique to the parent cell.
Similarities
1. Both processes are completed in a specific order that is heavily monitored to ensure that errors do not occur.
2. Both processes proceed DNA replication as well as growth phases.
3. Both processes have at least one phase in which the sister chromatids separate; in the case of meiosis, it is anaphase II, and in mitosis, it is anaphase.
Answer:
a) Astrocytes
Explanation:
The astrocytes are components of the central nervous system that provide the necessary supports that the brain needs to perform vital tasks such as learning and other daily activities. They are typical cell types in the central nervous system that aid blood flow in the brain as well as the migration of neurons.
''Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. They are vital for life and serve a wide range of important functions in the body, such as aiding in digestion and metabolism.''
Answer:
Small pebbles.
Explanation:
Sedimentary rock is formed by small sediments that, under pressure, join to form a larger rock. Things such as fossils, sand, pebbles, and shells can be found in sedimentary rock.
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