Answer:
Autacoids or "autocoids" are biological factors (molecules) which act like local hormones
The statement that is true is active transport moves against the concentration gradient.
<h3>WHAT IS ACTIVE TRANSPORT</h3>
Active transport is one of the two types of cellular transport that involves the movement of molecules against a concentration gradient.
This moves that movement occurs from a region of lower concentration to a region of higher concentration. Since movement is against a concentration gradient, it involves input of energy (ATP).
Therefore, the statement that is true is active transport moves against the concentration gradient.
Learn more about active transport at: brainly.com/question/2503897
Diffusion-process of spreading culture traints from one society to another...in other words the spreading of something more widely
<span>Optical microscope which uses light to image the sample Electron microscope so i think yes they are all nesseary</span>
Channel proteins, also known as transport proteins, allow the passage of molecules in and out of the plasma membrane.