Biology Questions and Answers
- What are the substances
that constitute the chromatin?
What is the difference
between chromatin and
chromosome?
The chromatin, dnucleus, is a set of filamentoispersed in theus DNA (^)
molecules associated to nuclear proteins
called histones. Each DNA fdouble helix of DNA and thus ailament is a
chromosome.
- What is the fluid that fills
the nucleus called?
The aqueous fluid that fills the nuclear
region is called nucleoplasm. In the fluid there arekaryolymph, or (^)
proteins, enzymes and other important
substances for the nuclear metabolism.
- Of what substances is the
nucleolus made? Is there a
membrane around the
nucleolus?
Nucleolus is a region within the nucleus
made of ribosomal RNAproteins. It is not delimite (rRNA) andd by
membrane.
- What is the name of the
membrane that delimits the
nucleus? To which component
of the cell structure is that
membrane contiguous?
The nuclear memkaryotheca. The nuclear mbrane is also calledembrane is (^)
continuous to the endoplasmic reticulum
membrane.
- What are the main
cytoplasmic structures
present in animal cells?
The main cytoplasmic structures of the
cell are the centrioles, the lysosomes, mitochondria, pcytoskeleton,eroxisomes,
the Golgi reticula and ribosomapparatus, tes.he endoplasmic - What are cytoplasmic
inclusions?
Cytoplasmicmolecular ag inclusions argregates, such e cytoplasmicas
pigments, organic polymers andcrystals. They are not considered cell (^)
organelles.
Fat droplets and glycogen granules areexamples of cytoplasmic inclusions.
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