James was observing cells under a microscope. he observed some cells which had a layer outside the plasma membrane. what is this layer called?
a. cell membrane
b. cell wall
c. nuclear membrane

Which of these best describe conduction? a. transfer of heat between two objects that are touching b. transfer of heat by the actual movements of warmed matter c.the process in which energy is emitted by one object, transmitted through space, and absorbed by another d. the process in which energy is released by molecules

Choose a mutation from those in model 2 that would be neutral for a cell. explain your reasoning by relating the mutation to the cellular respiration process.

What are the formed elements (cell or parts of cell) in blood and what are their functions ?