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cells unit

QuestionAnswer
what are cells? they are the basic units of life.
what is the cell theory? all things are composed of cells. cells are the basic units of structure and function of living things. new cells are produced by living cells.
what is a nucleus? is the large membrane-enclosed structure that contains the cell's genetic material in the form of DNA. controls many the cells activities
what are eukaryotes? they are cells that contain nuclei
what are prokaryotes? they are cells that dont contain nuclei.
what are organelles? structures in a cell that act like organs
what is the cytoplasm? is the portion of the cell outside of the nucleus.
what is the nuclear envelope? what a nucleus is surrounded by, has two membranes
what are chromatin? the granular material you see in a nucleus.
what are chromosomes? the distinct threadlike structures contain the genetic information that is passed from one generation of cells to the next
what is a nucleolus? where the assembly of ribosomes begins
what are ribosomes? are small particles of RNA and protein found throught the cytoplasm.they produce protiens by following coded instructions that come from the nucleus.
what is endoplasmic reticulum? is the site where lipid components of the cell membrane are assembled, along with proteins and other materials that are exported from the cell.
what is golgi apparatus? is to modify, sort, and package proteins and other materials from the endoplasmic reticulum for storage in the cell or secretion outside the cell
what are vacuoles? store materials such as water, salts, proteins, and carbohydrates
what are lysosomes? are small organelles filled with enzymes
what are mitochondria? are organelles that convert the chemical energy stored in food into compounds that are moreconvenient for the cell to use.
what is chloroplast? are organelles that capture the energy from sunlight and convert it into chemical energy in a process called photosynthesis
what is cytoskeleton? the structure that gives eukaryotes their shape and internal organization
what are centrioles? located near the nucleus and help to organize cell division. not in plant cells
what is a cell membrane? a thin flexible barrier that surrounds the cell
what is a cell wall?
Created by: monicab
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