Which portion of the cell membrane is responsible for preventing unwanted materials from entering the cell?
a. integral protein
b. glycoprotein
c. lipid bilayer
d. cholesterol

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?

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.

What is the name of the group of elements that are a good conductor of heat? (5 points) select one: a. alkali metals b. halogens c. noble gases d. nonmetals