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Q. What is signifying when it is said that a virus is in an inactive state?
Viruses considered in inactive state are those whose genetic material is within host cells without assemblage of new virus and synthesis of viral proteins. The life cycle of these viruses can be activated under certain conditions and then new copies are made and synthesis of viral proteins begins.
The virus that causes herpes (herpes virus) is an example of a virus that keeps in an inactive state and is sometimes activated.
Q. How are gases exchanged in sponges? The gas exchange in sponges happens by diffusion from the exterior to the cells that absorb molecular oxygen and liberate carbon dioxide.
importance of pyramid of energy to the ecologist
Researchers (Helle et al., 2004) analyzed rates of twin births in the Sami population of Northern Scandinavia during the eighteenth and nineteenth centuries. They found that (1) a
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Critical Thinking Why is it necessary to use the same restriction enzyme to cut two pieces of DNA that are to be joined together? As each restriction enzyme recognizes a specif
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