When molecules are very large or are being moved against their concentration gradient, energy is required to move molecules acro
ss a cell membrane. this type of movement is best described as:?
1 answer:
Active transport. Which the molecules are transported by a protein called carrier protein with the help of ATP.
You might be interested in
multiply the power of the eyepiece and objective lense Explanation:
Answer:
Oxygen
Explanation:
The circulatory system gets oxygen from the respriatory system and circulates it throughout the body.
Answer:
Gene, a part of DNA that determines the trait of individual characteristics
Explanation:
Internal fertilization protects<span> the </span>fertilized egg<span> or embryo from predation and harsh environments</span>
