Well the main purpose of xylem is to transfer sap from the roots to the leaves and phloem typically transports sugars from leaves to sink tissue. Xylem only travels up from the roots but phloem can have either travel up or down. The outside cells of xylem are dead and the the cells that make up phloem are the sieve elements, which are supported by companion cells.
<u>Answer</u>:
It makes the kinetics of the complex so rapid as to prevent it from being the rate-limiting step(s) of a pathway is not true regarding substrate channelling
<u>Explanation</u>:
Substrate channelling is the transfer of transitional metabolic products of one enzyme straightly to other enzyme or any active site without its release into solution.The metabolic pathway can be made more rapid and also efficient than it would actually be through channelling if enzymes could have been randomly designed. It occurs in many ways like in pyruvate dehydrogenase complex may be tryptophan synthase or can be dihydrofolate reductase thymidylate synthase.
Answer:
Temperate climates are generally defined as environments with moderate rainfall spread across the year or portion of the year with sporadic drought, mild to warm summers and cool to cold winters.