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olga nikolaevna [1]
3 years ago
6

How do cells get ATP, the energy currency that does work in living things? It evolves via chemical evolution.

Biology
1 answer:
Rufina [12.5K]3 years ago
5 0
Cellular respiration and photosynthesis
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Two protein kinases, K1 and K2, function sequentially in an intracellular signaling pathway. If either kinase contains a mutatio
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Answer:

The order must be K2→K1, since the permanently active K1 allele (K1a) is able to propagate the signal onward even when its upstream activator K2 is inactive (K2i). The reverse order would have resulted in a failure to signal (K1a→K2i), since the permanently active K1a kinase would be attempting to activate a dead K2i kinase.

Explanation:

  • You characterize a double mutant cell that contains K2 with type I mutation and K1 with type II mutation.
  • You observe that the response is seen even when no extracellular signal is provided.
  • In the normal pathway, i f K1 activat es K2, we expect t his combinat ion of two m utants to show no  response with or without ext racell ular signal. This is because no matt er how active K1 i s, it would be unable to  act ivate a mutant K2 that i s an activit y defi cient. If we reverse the order, K2 activating K1, the above  observati on is valid. Therefore, in the normal signaling pathway, K2 activates K1.
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3 years ago
When water molecues are being evaporated through the leaves, the water column is pulled upward due to adhesion of water molecule
fomenos

Explanation:

The answer is F...because h2o molecules are heavier than the atmosphere it surrounds. Therefore, gravity takes over. plse correct me if wrong.

because of gravity, h2o is directed down. That's how plants survive, Remember, ..what goes up, must go down...per " isaac newton."

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Scientists who rely on creativity also tend to be persistent when they pursue a research goal. How might persistence be an advan
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Creative persistence is often useful when one is designing an experimental paradigm for example. It is useful tweaking different parameters of an idea which is much easier when one is creative - this is also at the core of scientific research very often. 
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The correct answer is The effect of oil spills on marine animals.

Environmental scientists deals with the study of nature and the interaction of nature with other organisms. Any effect on environment caused by any means is studied by environmental scientist.The effect of oil spills is harmful on marine animals and this is known to us because it was studied by the environmental scientists. This is also apart of environmental science.

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