Biology Questions and Answers
- Why are lysosomes known
as “the cleaners” of the cell
waste?
Lysosomes carry oheterophagic digestion: aut autoutophagicphagic and
digestion by digesting rsubstances from the cellularesidual
metabolism; heterophagic digestion by
digesting suLysosomes ebstancesnfold the substances that enter the cell. to be
degraded forming digestive vacuoles, or
residual vacuoltoward the plasma mes, that later migembrane fusingrate (^)
with it adigested material to nd liberating (exocytosis)the exterior. the
Cell Structure lysosomes Review - Image Diversity:
- Which are the cell
organelles that participate in
cell division and in the
formation of cillia and flagella
of some eukaryotic cells?
The organelles that participate in the
cell division anand flagella of some eukaryoticd in the formation cells areof cilia (^)
the centrioles. Some cells have cillia
(paramecium, tepithelium, etc.) ohe bronchial ciliatedr flagella (flagellate (^)
protists, sperm cells, etc.); these cell
structures armicrotubules oe composed ofriginated from th (^) e
centrioles. Centrioles also make the
aster microtuimportant for cell division.bules that are very
- What are the
morphological, chemical and
functional similarities and
differences between
lysosomes and peroxisomes?
Similarities:are small membranous vesicles lysosomes and peroxisomes that
contain enzymes and enclose residual
substancesorigin degrading them. D from internal or externalifferences:
lysosomes have digestive enzymes
(hydrolases) tbe digested into smallhat break substances to molecules;
peroxisomes contain enzymes that
degrade mainly loand amino acids anng-chaid that inactivatened fatty acids
toxic agents including ethanol; within
peroxisomescatalase, responsible there is the enzymefor the oxidation (^) of
organic comperoxide (Hpounds by hydrogen
substance is^2 in excess, by theO^2 ) and, when this
degradation and molecular oxyof the peroxide into wategen. r
- What are mitochondria?
What is the basic morphology
of these organelles and in
which cells can they be found?
Mitochondria are the organelles ithe most important part of the cellularn which
respiration occurs: the ATP production.
Mitochondria are organelles dtwo lipid membranes. The innerelimite d by
membrane invaginates to the organelle forming cristaethe interior that of
delimitate the internal space known as
mitochomitochondrial matrix anndrial DNA (mtDNA),d where
mitochondrial RNA (mt RNA),
http://www.biology-questions-and-answers.com