Select your answer:
Topics:
Nursing Vocabulary Cell Bio Absorption, Lymphatic System, and Blood Vessels Pathology Hospitality Bone, Spine, and Joint Pathology Illnesses and Diseases in Caregiving Introduction to Histology Breath Characteristics of Life Respiration Anatomy and Physiology Respiratory System Infection Control Anatomy & Physiology Knee AnatomyOther quiz:
Biotechnology › ViewThe passage of materials into and out of cells by active transport requires _________.
A. Concentration gradient only
B. Carrier and cellular energy
C. Vacuole or vesicle formation
D. Carrier and concentration gradient
Skeletal System › View
it protects the brain
A. skull
B. rib cage
C. sockets
D. lower jaw bone