In active transport, molecules are moved across the cell membrane with the help of: A) neurons
C) proteins
D) inhibitors
(B was electrical impulses but it was wrong)

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing