Active transport ________.
utilizes energy
cannot transport molecules against a concentration gradient
cannot be saturated
requires cofactors
utilizes energy
You might also like to view...
The lumen of a transverse tubule is occupied by
A. extracellular fluid. B. cytoplasm. C. actin. D. myosin. E. sarcomeres.
The modern evolutionary synthesis of the 1930s and 1940s melded together Darwin's findings with ________.
A. chemistry B. psychology C. genetics D. sociology
A population grows exponentially when
A) the death rate equals the birth rate and immigration is equal to emigration. B) the carrying capacity is exceeded. C) emigration exceeds immigration and the birth rate equals the death rate. D) the birth rate and the death rate are equal. E) the birth rate exceeds the death rate and immigration exceeds emigration.
How many tissue layers are in the embryos of sponges?
A) None B) One C) Two D) Three E) Four