Against their concentration gradient means its active transport.
Diffusion is with the concentration gradient.
Osmosis is the movement of water.
Answer: Hope this helps!
Explanation:Amino acids are the monomers that make up proteins.
Answer:
It's a new environment.
Explanation:
People need to adapt to their surroundings if they are introduced to something new.
Answer:
The correct answer is D) integral membrane proteins.
Explanation:
257/5000
Ionic channels consist of oligomeric transmembrane integral proteins (formed by the assembly of several subunits). Said proteins act as gate channels that allow the passage of certain ions eg. calcium, sodium, potassium, etc.
Answer: Possession of Valves
Explanation: Veins possess valves which ensures that blood flows in only one direction. Valves helps blood to flow back to the heart against gravitational force.
Arteries don't have valves because the pressure originating from the heart is capable of causing the blood to flow in one direction.