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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.
Soil Mixing The larger soil organisms are responsible for considerable mechanical mixing and weathering of soil. The wedge-like action of roots and other underground plant orga
Q. Investigations process of acute pericarditis? 1) Blood Examination Erythrocyte sedementaion rate (ESR) may be elevated in tuberculous; collagen and purulent pericarditis.
DIFFERENCE BETWEEN PLANTS AND ANIMALS - S . N o . C h a ra c ter P l an ts A n i m al s 1 Nutrition
What are mycorrhizas? How does each participant benefit in this ecological interaction? Mycorrhizas are mutualist ecological interactions among fungi and some plants roots. Fun
Light microscopy: Microscopy started with light microscopes using visible light to illuminate the objects, the most used and familiar microscope is called compound light micro
Cytosketal Mechanism There are two co-ordinate processes in the cleavage (or cell division) that is displayed in Figure. Karyokinesis The mitotic division of nucleus
What is the valve that separates the right ventricle from the pulmonary artery? Why is that valve significant? The valve that divides the right ventricle and the base of the p
a) Describe the electron transport system. Where does it happen in a mitochondrion and what is the role of oxygen in it ? b) Explain the events that happen in the human heart du
phylogenetic consideration
Identify and briefly explain the structural and functional changes that occur in the large bowel when colorectal cancer develops.
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