Answer:
Explanation:
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We can compare prokaryotic cells and eukaryotic cells in following points:
• The prokaryotic cells are simple and primitive type of cells whereas •Eukaryotic cells are complex and advanced cells.
•The DNA is small and circular in prokaryotic cells whereas the DNA is large and linear in eukaryotic cells.
•In prokaryotic cells 70s type of ribosome is found in cytoplasm but in Eukaryotic cells both 70s (inside cell organelles) and 80s (in cytoplasm) are found.
• In prokaryotic cells cellular respiration takes place through cell membrane but in eukaryotic cells cellular respiration takes place through mitochondria.
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The answer to this is the plate tectonics theory.
The earth's lithosphere is divided into large, moving sections which are called the tectonics plates.
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Answer:
The nervous system releases neurotransmitters at synapses at specific target cells & The endocrine system reacts more slowly to stimuli, often taking seconds to days.
Explanation:
The nervous system is very specific with where the neurotransmitters go so they will affect target cells. The endocrine system is slower than the nervous system because the hormones travel through the blood so it takes much longer to reach the designated area.
Calcium
Vitamin D
Vitamin K
Phosphorus
vitamin C
Meiosis increases genetic variation due to random segregation which occurs.
In anaphase I of meiosis, the homologous pairs (one maternal and one paternal chromosome) are moved apart to opposite ends of the cell and this process occurs random. This allows the formation of gametes with different sets of homologues. In this phase sister chromatids remain attached at their centromeres (not segragated as in mitosis).
