Answer:
Channel proteins form hydrophilic channels to passively transport substances down the concentration gradient.
Carrier proteins bind to substances to transport them actively against the concentration gradient. They do not form channels.
Explanation:
Channel proteins are the membrane proteins that serve in transport of small polar molecules and/or ions by making a hydrophilic pore across the membrane. These molecules diffusion through the pore and exhibit facilitated diffusion.
Carrier proteins are the membrane proteins that transport the substances across the membrane by binding to them. They do not form the hydrophilic channels. Carrier proteins serve in the active transport of molecules against the concentration gradient.
They share a more recent common ancestor.
c.Stomata are generally open during the day to remove excess water from the planet and closed at night to keep oxygen from escaping.
the purpose of the egg white constitutes an antmicrobial barrier, and provides water, and protein and other nutrients to the developing embryo
