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chapter 3 Cell structure/function

most cells are smaller than 0.1mm
cells are small because nutrients pass through the _?_ to enter the cell plasma membrane
cells are small because nutrients pass through the plasma membrane to _?_ the cell enter
cells are small because wastes pass through the plasma membrane to _?_ the cell exit
a cell needs enough _?_ to exchange materials with its environment surface area
the amount of surface area (plasma membrane) affects the ability to get materials in and out of a cell
what happens when cells increase in size the amount of surface area relative to volume decreases
what happens if cells become to large the surface area would be insufficient to service the increasing volume
two main types of cells prokaryotic / eukaryotic
eukaryotic cell structures are surrounded by a semifluid medium inside the cell called cytoplasm
what is a nucleus determines the cells characteristics by coding for the protiens, stores the dna
what is a nucleoplasm semifluid medium inside the nucleus
what is a nucleolus produces ribosomes
what is a nuclear envelope double membrane that has pores through which materials may pass
what are ribosomes directly synthesize protiens
where are the ribosomes located may be free cytoplasm or attached to the endoplasmic reticulum
what is a endomembrane system series of intracellular membranes that compartmentalize the cell
what is a endoplasmic reticulum (ER) consist of membranous channels and sacs
what is a rough endoplasmic reticulum site for protein synthesis, has ribosomes
what is a smooth endoplasmic reticulum lipid synthesis, detoxification and a transport to the Golgi
what does a golgi apparatus do (UPS) collects, sorts, packages, and distributes materials
what does a lysosomes do (garbage system) vessel that contains digestive enzymes that break down materials for the cell
what does a vacuoles do membranes sac that store substances/ water, pigment, toxins
what does a peroxisomes do vessels that carry out various metabolic functions by oxidizing organic compounds
choloroplasts are found where plants and algae
cholorplasts contain their own dna, ribosomes, enzymes (C)
choloroplasts: photosynthesis solar energy is converted into chemical energy within carbohydrates
mitochondria is found where all eukaryotic cells
mitochondria contain their own dna,ribosomes,enzymes (M)
choloroplasts is the site of photosynthesis
mitochondria is the site of cellular respiration
mitochondria: cellular respiration breakdown of food for energy
cytoskeleton are network of connected filaments and tubules that extend from the nucleus to the plasma membrane
cytoskeleton maintains what cell shape
cytoskeleton assists what movement of cell and organelles
cytoskeleton assembles what and disassembles as needed
cytoskeleton has three types of macromolecular fibers actin filaments, intermediate filaments, microtubles
actin filament, intermediate filament and microtubles are three types of what cytoskeleton macromolecular fibers
centrosomes and centrioles do what help organize part of the cytoskeleton (assemble/disassemble)
plant cells or animals cells have centrioles animals cells
cilia and flagella are what hairlike projections that aid in cell movement
what does cilia do in the body help material move through tubes
in eukaryotic cells, cilia are much _?_ than flagella shorter
Created by: kelley kelley



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