<span>A zygote begins as a one-cell structure that is created when a sperm and egg merge.
In the embryonic development of people and different creatures, the zygote arrange is brief and is trailed by cleavage, when the single cell moves toward becoming subdivided into smaller cells. we can also define zygote as a cell that is formed when two gametes meet.
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Hello,
Nucleus- Is the most important part of cell
Plasma Membrane- A microscopic membrane
Cell wall- <span>a rigid layer of polysaccharides lying outside the plasma membrane
Mitochondria- A organelle found in large amounts in cells
Vacuoles- </span>a space or vesicle within the cytoplasm of a cell
Chloroplasts- Convert light energy into sugar
Ribosome- A<span> minute particle consisting of RNA and associated proteins
They work together in multicellular organisms.
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7 first blank is " closer " second blank "warmer " 8 blank is " cooler "
Answer:
a) the pyrimidine ring is assembled before being bonded to the ribose phosphate, whereas the purine ring is bonded to the ribose phosphate as it is formed
Explanation:
There are two ways for the synthesis of purines and pyrimidines:
- de novo synthesis-from basic simple units
- "recycling" synthesis-reuse of metabolites
Purines are synthesized directly on ribose sugar, in segments.
Pyrimidines are attached to the ribose after the synthesis of the base.
