It's common after heart surgery to be sad or blue, but these feelings should pass after the first few weeks. If they don't, talk to your doctor about it. To keep your spirits up: Get dressed every day. Walk daily. Pick up your hobbies and social activities. Share your feelings with others. Get a good night's sleep. Limit visits to 15 minutes at first.
Eukaryotes. Eukaryotes are organisms made up of cells that possess a membrane-bound nucleus (that holds genetic material) as well as membrane-bound organelles. Genetic material in eukaryotes is contained within a nucleus within the cell and DNA is organized into chromosomes.
Eukaryotes possess multiple linear chromosomes contained in the cell's nucleus. Each chromosome has one centromere, with one or two arms projecting from the centromere. The ends of the chromosomes are special structures called telomeres. DNA replication begins at many different locations on the chromosome.