Because particles move randomly, molecules tend to move across the membrane in both directions. does the model indicate that the molecules are moving in equal amounts in both directions? justify your answer using complete sentences.

Because particles move randomly, molecules tend to move across the membrane in both directions. Yes, the  model indicates that the molecules are moving in equal amounts in both directions. This calld the state of equilibrium where the forward and backward movements are equal hence the net movement  is equal to zero

the answer is d.) homologous; have mammary glands

a and c are the answeres