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What is Passive Transport?
Passive Transport: Specialized proteins called permeases also move specific substances across the cell membrane in a process called carrier transport. If these molecules function without requiring chemical energy, the passive transport is called facilitated diffusion. Substances cross the cell membrane in the same direction as they would by diffusion.
Another passive transport mechanism consists of gated channels, proteins that allow certain substances to cross the cell membrane, either permanently or following a chemical or electrical stimulus. An example of passive transport: glucose enters red blood cells about 100 times faster than would be expected from simple diffusion. This process apparently does not require energy.
Structural Function - Essential Elements The elements nitrogen, phosphorus and sulphur absorbed from the soil are essential components of amino acids and nucleotides. The othe
Why do fats have thermal isolation properties? Triglycerides are weak heat conductors and in addition they form thick layers of fat tissue when accumulated by the organism. Tha
Crustacea The Crustacea show a great morphological diversity of appendages which may be grouped into three categories, cephalic, thoracic and abdominal. Their appendages are c
While various positive control components lie close to the gene they regulate additional can be situated long distances away (sometimes 10-50 kb) either upstream or downs
PENIS - Intromittent organ. Erectile, its apex is penis glanse. Covered by prepuce (part of skin). Main function is insemination (To transfer sperms in vagina in deep).
how fertilization occur in human?
D uck septicemia (duck pasteurellosis/new duck disease) The disease is caused by Pasteruella anatipestifer (Syn. Riemerella anatipestifer ) that mostly affects growing duck
Formation of female gametes: Ovule develops from a cushion like part of the ovary called the PLACENTA. Ovule is connected to the placenta by a stalk known as FUNICLE. The
Analyse the model that highlights the factors which influence the environmental impact of a population
Protozoan phyla
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