ati teas 7 biology section

ati teas 7 biology section all cells contain DNA and RNA and can synthesize proteins. each cell consists of nucleic acids, cytoplasm, and cell membrane Life begins as a single cell whether by asexual or sexual reproduction cells are grouped together by tissues tissues are grouped together by organs Organs are grouped together in: systems an organism is a complete individual Cells can be classified as prokaryotic or eukaryotic ribosomes involved in synthesizing proteins from amino acids. they are numerous, making up about one quarter of the cell. some cells contain thousands of ribosomes. some are mobile and some are embedded in the rough endoplasmic reticulum golgi complex involved in synthesizing materials such as proteins that are transported out of the cell vacuoles these are sacs used for storage, digestion, and waste removal. vesicle small organelle that contains and transports materials within the cytoplasm. Cytoskeleton consists of microtubules that help shape and support the cell Microtubules These are part of the cytoskeleton and help support the cell. They are made of protein. cytosol liquid part of cytoplasm. contains some floating molecules cytoplasm refers to cytosol and the substructures (organelles) found within the plasma membrane, but not within the nucleus cell membrane defines the cell by acting as a barrier. it keeps cytoplasm in and substances located outside the cell out. it also determines what exits and enters in the cell Endoplasmic Re