Transport of materials into a cell against a concentration gradient, from low to high, requires
a) water.
b) energy.
eliminate
c) osmosis.
d) a passageway.

The transport of materials into a cell, where the movement of the materials is against the concentration gradient, in other words, the materials are moving from low to high concentration would require B. Energy.

Ribonuclease activity is a type of nuclease that catalyzes the degradation of rna into small components.

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey