Cell organization-Questions and Answers Graded A+

Cell organization-Questions and Answers Graded A+ Cell - ANSWER-Basic unit of life Tissue - ANSWER-A group of similar cells that perform the same function. Organ - ANSWER-A collection of tissues that carry out a specialized function of the body Organ system - ANSWER-group of organs that work together to perform a specific function Organism - ANSWER-This is a living thing that which is capable of carrying out the seven characteristics of life Digestive system - ANSWER-Breaks down food into absorbable units that enter the blood for distribution to body cells. Nervous system - ANSWER-the network of nerve cells and fibers that transmits nerve impulses between parts of the body. Lungs - ANSWER-two spongy organs, located in the thoracic cavity enclosed by the diaphragm and rib cage, responsible for respiration Heart - ANSWER-A hollow, muscular organ that pumps blood throughout the body. Reproductive system - ANSWER-system of organs involved in producing offspring Cell cycle - ANSWER-The regular sequence of growth and division that cells undergo Cytokinesis - ANSWER-Division of the cytoplasm to form two separate daughter cells Mitosis - ANSWER-part of eukaryotic cell division during which the cell nucleus divides Nuclear envelope - ANSWER-A double membrane that surrounds the nucleus in the cell Chromosomes - ANSWER-a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes. Chromatids - ANSWER-two identical chromosomes that split and contain the same genetic material Centromere - ANSWER-Region of a chromosome where the two sister chromatids attach Centrioles - ANSWER-Cell organelle that aids in cell division in animal cells only Spindle fibres - ANSWER-Protein fibres in the cell that pull apart sister chromatids during mitosis and meiosis. Cell membrane - ANSWER-A cell structure that controls which substances can enter or leave the cell.