In science what is zctive transport in yiur own words​

Explanation:

Basically its when tiny molecules float across the  membrane from the lowest concentration to the highest concentration to get what they need like glucose.

active transport is the movement of a chemical substance by the expenditure of energy against a gradient in concentration or in electrical potential across a plasma membrane.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

this is a good question! i'll do some research and come back when i have the answer!