How does the structure of the papillary dermis relate to its functional properties?

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel