Biology Cells Test questions with complete solutions 2023

Biology Cells Test questions with complete solutions 2023The Cell Theory -all living things have one or more cells -cells are the basic unit of structure and function -only come from reproduction of existing cells Schleiden's Part -all plants are made of cells Schwann's Part -all animals are made of cells Virchow's Part -cells come from other cells Ways cells are not alike -size -shape -internal organization Theory of Endosymbiosis -created by Lynn Margulis -some organelles were once able to live independently -mitochondria and chloroplasts have their own DNA Prokaryotes -simpler & smaller than eukaryotes -first cells -unicellular Prokaryote Structures -cell membrane -cytoplasm -nucleoid region w/ DNA -peptidoglycan cell wall -ribosomes w/o membrane Eukaryotes -larger & more complex than prokaryotes -uni or multicellular -nucleus & many other structures -main types: plant and animal Bacterial Conjugation -in reproduction -bacteria exchange plasmids -plasmids are a loop of DNA in bacteria -attach w/ pili (sp?) Cell/Plasma Membrane -composed of phospholipids and proteins -surround all cells -controls what enters and leaves the cell -a living layer Cell Wall -non-living -protects and supports cells -made of cellulose in plants -peptidoglycan in bacteria -chitin in fungi -outside the cell membrane