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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.
Wigs and hairs - Seed Appendages Seeds of certain plants have epidermal outgrowths or the integuments themselves may form folds and projections that present a wing-like appea
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Transposable elements are able to move around the genome by precise or imprecise excision events. What is meant by imprecise excision? A. Imprecise excision refers to a transpo
composition formation and circulation of lymph
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Two gene loci, A and B, assort independently, and alleles A and B are dominant over alleles a and b. Indicate the probablilities of producing .... an AB phenotype from a cross AaBb
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R a d i o g raphic imaging: Radiology has been in use since the discovery of X-rays by Wilhelm Conrad Roentgen in 1895. Until 1980s, radiography was the
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