Feedback Mechanism- Definition, Types, Process, Examples, Applications

Feedback Mechanism

Feedback Mechanism Definition The feedback mechanism is the physiological regulatory system in a living body that works to return the body to the normal internal state or homeostasis. These mechanisms are also found in nature in different ecosystems and animal groups. The feedback mechanism in the living system occurs in the form of a loop which assists in the maintenance …

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Connective Tissue- definition, structure, cells, types, functions, diseases

Connective Tissue

Connective Tissue Definition Connective tissue is one of the tissue systems in animals composed of different types of cells, all of which work together to provide internal support, adhesion, and cohesion between tissues to form organs and systems. The cells of connective tissue provide a matrix that gives metabolic support to cells as well as a medium for the transport …

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3D Bioprinting- Definition, Principle, Process, Types, Applications

3D Bioprinting- Definition, Principle, Process, Types, Applications

What is 3D Bioprinting? 3D Bioprinting is the method of printing biomedical structures with the use of viable cells, biological molecules, and biomaterials. In simple words, 3D bioprinting is the deposition of biological material in a layer-by-layer fashion to create 3D structures like tissues and organs. Bioprinting is considered a part of additive manufacturing that involves the formation of materials …

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Phylum Echinodermata- Characteristics, classification, examples

Phylum Echinodermata

Echinodermata (Echinoderms) Definition Echinoderms are enterocoelous coelomates with pentamerous radial symmetry, without distinct head or brain having a calcareous endoskeleton of separate plates or pieces and a peculiar water vascular system of coelomic origin with podia or tube-feet projecting out of the body. Phylum Echinodermata Characteristics They are exclusively marine and are among the most common and widely distributed marine …

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Phylum Coelenterata (Cnidaria)- Characteristics, classification, examples

Phylum Coelenterata

Coelenterata (Cnidaria) Definition The Coelenterata may be defined as diploblastic metazoa with tissue grade of construction having nematocyst and a single gastrovascular cavity or the coelenteron. Phylum Coelenterata (Cnidaria) Characteristics They are aquatic, mostly marine except few freshwater forms like the hydra. They are multicellular with tissue grade of organization. They are solitary or conical. Sedentary or free-swimming. Individuals are …

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Phylum Hemichordata- Characteristics, classification, examples

Phylum Hemicordata

Hemichordata Definition Hemichordata (Gr., hemi, half; chorde, cord) means they are ‘half’ of ‘part’ chordates, a fact that is disputed. They are usually vermiform, solitary, or colonial enterocoelous coelomate animals with an intra-epidermal nervous system and a pre-oral with or without gill-slits and without typical nephridia. Phylum Hemichordata Characteristics They are exclusively marine, solitary or colonial, mostly tubicolous. Their body …

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Phylum Arthropoda- Characteristics, classification, examples

Phylum Arthropoda

Arthropoda (Arthropods) Definition Arthropods are bilaterally symmetrical, triploblastic, metamerically segmented animals with coelom which is reduced and modified. Their body is covered externally in a chitinous exoskeleton which molts periodically and their appendages are joined. Phylum Arthropoda Characteristics They are bilaterally symmetrical, triploblastic, metamerically segmented animals. Body organization is of an organ-system level. The body is covered with a thick …

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Phylum Porifera- Characteristics, classification, examples

Phylum Porifera

Porifera Definition The Porifera may be defined as an asymmetrical or radially symmetrical multicellular organism with a cellular grade of an organization without well- definite tissues and organs; exclusively aquatic; mostly marine, sedentary, solitary or conical animals with body perforated by pores, canals, and cambers through which water flows; with one or more internal cavities lined with choanocytes; and with …

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Chlorophyll- Definition, Structure, Types, Biosynthesis, Uses

Chlorophyll- Definition, Structure, Types, Biosynthesis, Uses

Chlorophyll Definition Chlorophyll is an important class of pigment molecules that act as a principal photoreceptor in the case of most green plants. Chlorophyll is a photosynthetic pigment that is involved in absorbing electromagnetic radiation and aids in the conversion of light energy to chemical energy via the synthesis of organic compounds. The term ‘chlorophyll’ is derived from two Greek …

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Sulfur Cycle- Definition, Steps, Examples, Significance, Human Impacts

Sulfur Cycle

Sulfur Cycle Definition The sulfur cycle is a biogeochemical cycle consisting of various processes that together enable the movement of sulfur through different reservoirs like the atmosphere, biosphere, and lithosphere. Sulfur is an important mineral in living organisms that is found in biomolecules like proteins. Besides, sulfur is also an essential mineral found in rocks and soil as the lithosphere …

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