Answer:
spindle fibers act as guides for the alignment of the chromosomes as they separate later during the process of cell division.
Explanation:
They play a role in mitosis of animal cells and plant cells are able to reproduce without them.
Research however has shown that mitosis can take place in animal cells after centrioles have been destroyed. ... In higher plants mitosis takes place perfectly satisfactorily with microtubules forming spindle fibres but without the help of centrioles.
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Viruses are much smaller then cells, viruses have genetic material DNA or RNA and cells also have genetic material
Answer:
a. The alpha-carbon
Explanation:
An amino acid is an organic molecule that contains a carboxyl (COOH) and a amino (NH2) group. It has a central carbon called as alpha carbon.
The carboxyl and amino groups are attached to the the alpha carbon. Apart from them, a side chain denoted by "R" is also covalently attached to it. Side chain varies in each amino acid and it imparts the unique properties to the particular amino acid.