How does HIV exploit the purpose of a CD4 protein which is a glycoprotein on the surface of immune system cells?

Which one of these is a involving in both sexual and asexual reproduction

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.