Active transport requires energy because it moves molecules across a membrane to a region of lower to higher concentration which is often against their concentration gradient or has an obstructing factor.
He had no proof to back up this theory and was rejected by the scientific community. People only found evidence after he died. Please make me brainliest
The nitrogenous base found in DNA but not RNA is called thymine. That's what it bonds to.
A
It is used to represent the number of atoms in the element. H2O is 2 Hydrogen molecules and one oxygen molecule, however we don’t wright the 1.
