Movement from low concentration to high concentration will require:
nothing or
energy/ATP

It requires ATP/energy

Explanation:

This is also known as active transportation. Moving from a lower concentration to a higher concentration will cost wayyy more energy than moving from higher concentration to lower concentration. You could think of it as a current, going against the current is harder!

i'm sorry, but can you list the answers? i cannot with something i don't know the answers to

,

chris

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.