Answer:
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Answer:
a. At the cytosol surface
Explanation:
- The G protein coupled receptors have seven transmembrane alpha helices and because of this they are able to pass through the cell membrane seven times.
- Like every protein, this receptor also has to terminals - one is the N-terminus and the other is the C-terminus.
- The N-terminus is the amino end of the receptor whereas the C-terminus is the carboxyl end of the receptor.
- The N-terminus lies on the extracellular side and then it crosses the membrane 7 times such that the C-terminus faces the inside that is towards the cytosol.
- The fact that the loop on the cytosol side between helices 5 and 6 helps us to know that the 7th loop must go outside and by coming back in the C-terminus would eventually face the cytosol.
Low concentration to high concentration and requires energy
Answer:
Short answer: No
Explanation:
Water vapor is created by evaporation creating moisture aka humidity in the air, once water vapor reaches high altitudes it freezes creating snowflakes which then turn around and fall creating snow.
Because snow formation requires moisture, very cold but very dry areas may rarely receive snow. Antarctica's Dry Valleys, for instance, form the largest ice-free portion of the continent. The Dry Valleys are quite cold but have very low humidity, and strong winds help wick any remaining moisture from the air. As a result, this extremely cold region receives little snow.
Answer: it is difficult because it is necessary to understand some concepts used in a system. For example what is a boundary, and environment which can be positive or negative, etc. A sample could be the course OpenLearn that provides an example of Computing & IT.
Explanation: