Question 3 of 10 Membrane proteins called pumps use energy to move hydrogen ions to one
side of the membrane. Which term describes the difference between the
numbers of hydrogen ions on opposite sides of the membrane?
A. Concentration gradient
B. Equilibrium
ОО
C. Homeostasis
O
D. Ion concentration
SNSMIT

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.