The powerhouse of a cell is mitochondria
Answer:
<h2>Yes, the synthesis of threonine occurs because threonine will not be bound to the repressor, so in unbound state, the repressor will be inactive.
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Explanation:
1. If an E. coli bacterium is grown, in an environment where threonine is absent, transcription of threonine synthesis genes take place, because threonine will not be bound to the repressor, so the repressor will be inactive.
2. When the repressor is bound to the threonine, it becomes active, and in the absence of threonine , repressor become inactive because there is no threonine to bind with repressor.
3. So, in the absence of threonine , there is synthesis of threonine occurs.
The rocks are in dry climate.
The relative permanence or “toughness” of the rock prone to weathering absolutely depends partially on sort of rock it is. This is because rock type is defined by the structure and relationship of the constituent metals, and complex metals vary in how they endure up to weathering.
Several types of rock, like granite, are very repellent to weathering. Moreover, Igneous rocks serve to heat slowly because it is difficult for water to penetrate into them.
Explanation:
polar bear depend on ice so if it gets really hot out of a sudden the melt will melt away and it would be harder for them to live. and for grizzly bears if gets cold all out of the sudden the rivers where they get food turns to ice they'll food which is what they depend on (fish) will die and without food they'll die too.
Ash can be harmful to an environment. It mostly depends on how much ash there is though. If a volcano erupted such as Mt. St. Helen's then yes that can harm an environment. Ash can cover the sky and block out the sun for days before disappearing and that will affect the life of plants