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Biology - Cell Structure & Function Chapter 3
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Side A ------ Side B Three main points of Cell Theory ------ 1) All living things are made up of cells 2) Cell are the basic units of structure and function in living things 3) Living cells come only from other living cells A cell's size is limited by its ______. ------ Surface area to volume ratio What must a cell be large enough to do? ------ a) hold its organells b) perform chemical reactions What must a cell be small enough to do? ------ Have enough surface area to supply its volume with nutrients Surface area equation ------ length X width X number of surfaces Volume equation ------ length X width X height Surface area to volume ratio equation ------ surface area ------------------ volume As a cell grows, what happens to its surface area to volume ratio? ------ It decreases A cell cube has 3cm/side, what is its: 1) surface area 2) volume 3) Simpliest ratio ------ 1) 54cm2 2) 27cm2 3) 2:1 When a cell grows and it's S.A. to V.R. decreases, what effects does this have of diffusion? ------ Diffusion decreases and becomes less efficient When a cell divides, what happens to its surface area and volume? Why? ------ They decrease causing the ratio to increase and diffusion rate to increase. Because the volume decreases more in comparision to the surface area Is cell division beneficial to the rate of diffusion? ------ Yes How big is a prokaryote cell? ------ 2 - 8 micrometers Does a prokaryote cell have a nucleus? ------ No Where is DNA located in a prokaryote cell? ------ In the cytoplasm Does a prokaryote cell has a cell wall? + ------ Yes, non-cellulose Are there organelles in the prokaryote cell? + ------ A few, but they are nonmembranous Is there mobility in a prokaryote cell? Flagellum? ------ Yes, there is one or more flagellum. What are the features of a bacillus cell? ------ a) rod shaped b) areobic (needs oxygen) c) often occurs in chain What are the features of a cuccus cell? ------ a) spherical b) occurs singular, paired or chains of clusters What re the features of a spirrillum cell? ------ a) spiral shape Gram positive's cell wall & stain ------ Peptidoglycan Blue/purple Gram negative's cell wall & stain ------ Peptidoglycan & lipopolysaccharide Red/organge Facilitated transport goes from _____ to _____ concentration. Why is it a passive transfer? Involves? ------ High to low Because no energy is needed, only a protein carrier Embedded proteins in bilayer Active transport goes from _____ to _____ concentration. Why is ATP required? Involves? ------ Low to high Because solute must travel against concentration Pumps What are the special proteins on bilayer called? ------ Pumps What does APT stand for? ------ Adenosine Triphosphate Endoctosis: Does not involve/cannot enter what? Qualitative size of molecule that cannot fit though? What happens? ------ Protein channels Large They fuse to outer surface of the plasma membrane, the membrane indents and he molecule is absorbed. What is phagocytosis? ------ Cell eating - white blood cell engulfs and digests a pathogen What is pinocytosis? ------ Ingestion of liquid What is exocytosis? ------ Process by which a cell will expel a molecule it has made Secretory vessicle containing a large molecule fusus with the interior of the plasm membrane and expels it contents from the cell. What is the nucleus composition? ------ Double membrane (nuclear envelope) Porous (nuclear pores) Semifluid interior nucleoplasm Unique pH Chromatin (long strands of DNA) What is the function of the nucleus? ------ DNA: contains genes (recipe) for protein synthesis Process called transcription Where is the nucleolus found? ------ Inside the nucleus What is the composition of the nucleolus? ------ Dense mass of rRNA, ribosome subunit proteins What is: rRNA tRNA mRNA ------ ribosomal ribonucleic acid transfer ribonucleic acid messenger RNA What is a ribosome? ------ the protein manufacturing machinery of all living cells In what cells is the nucleus found? ------ Plant and animal cells In what cells is the Ribosome found? ------ Plant, animal and prokaryotes cells What does rER stand for? ------ rough Endoplasmic Reticulum Where is the ribosome located? ------ a) studded on the exterior surface of rER b) cytoplasm-free ribosomes What is the composition of the ribosome? ------ Two subunits: - one smaller than the other - each with a unique mix of proteins What is the function of the ribosome? ------ Work bench for sythesis of the polypeptide chain (1*) What is the process of the ribosome? ------ Translation What is DNA's special feature and role? ------ SF: genetic information R: template for mRNA synthesis during transcription What is mRNA's special feature and role? ------ SF: codons R: sequences of 3 RNA bases (codon) complementary to DNA What tRNA's special feature and role? ------ SF: anticodon R: sequence of 3 RNA bases (anticodon) complentary to mRNA codon What is rRNA's special feature and role? ------ SF: ribosome R: site of polypeptide synthesis during translation What is amino acid's special feature and role? ------ SF: building block of proteins R: transported to ribosome by tRNA during translation What is protein's special function and role? ------ SF: macromolecule essential to life R: amino acid joined in a specific and predetermined order by DNA Where are the endoplasmic reticulum (rough and smooth) found? ------ In plant and animal cells Where is the rough endoplasmic reticulum located? ------ Nuclear envelope What is the compostion of the rough endoplasmic reticulum? ------ Membranous Interconnected tubes/sacs outside surface studded with ribosomes Inside fluid filled with protein enzymes 20 - 40 levels of proteins Where is the smooth endoplasmic reticulum located? ------ The rough endoplasmic reticulum How is the smooth endoplasmic reticulum composed? ------ Membranous interconnected tubules No ribosomes What are the 5 functions of the smooth endoplasmic reticulum? ------ 1) synthesis of lipids 2) produces testosterone and estrogen 3) in liver cells produces enzymes for detox 4) in muscle stores calcium 5) synthesis transport vessels to golgi apparatus In what cells is the golgi apparatus found? ------ Plant and animal cells What is the location of the golgi apparatus? ------ Between the rER and sER and plasma membrane. What is the composition of the golgi apparatus? ------ Membranous Series of flat sacs Vacules "bubbling" What is the function of the golgi apparatus? ------ Packaging and receiving secretion: Receive from rER: protein and a sugar (glyoprotein) Reveives from sER: lipid and adds a sugar (glycolipid) Synthesis lysosomes In what cells are the lysosomes found? ------ Animal cells Where is the lysosome located? ------ Cytoplasm What is the composition of the lysosome? ------ Membranous vacuole Contains digective enzymes What are the 4 functions of the lysosome? ------ 1) digestion: enzymes digest carbs, lipids, protein and nucleic acid 2) defence: white blood cells engulf pathagens 3) cell clean up: digest old organelles 4) embryonic function: digest webbing between fingers and toes in embryo In what cells are the vacuoles found? ------ In the plant and animal cells What is the composition of the vacuoles? ------ Membrane bound various sizes and functions In what cells is the peroxisomes found? ------ Plant and animal cells What is the composition of the peroxisome? ------ Membrane vacuole containing many enzymes In what cells are the mitochondria found? ------ Animal and plant cells Where is the mitochandria located? ------ Cytoplasm What does the mitochandria look like? ------ 7 micrometers length, bean shape brown What is the composition of the mitochondria? ------ Double membrane Outer membrane: porous Inner membrane: porous, enfolded Cristae: individual folds Intermembrane space: between outer and inner membrane, watery enzymes Matrix: jelly-like fluid; contain ribosomes, oxygen, enzyme and DNA What is the function of the mitochondria? ------ Site of cellular respiration: glucose to ATP ATP synthesis What are the unique features of mitochondria? ------ a) ability to reproduce/divide b) liver cell & muscle fiber: greater than 1000 mitochondria per cell In what cells is the cytoskeleton found? ------ In the plant and animal cells What does the cytoskeleton of a cell consist of? ------ Protein fibers forming a thick network with the cytoplasm What are the primary functions of the cytoskeleton? ------ Framework, support, movement of organelles and anchoring organelles are in place. What are 3 types of proteins of fibers which make up a cytoskeleton? ------ 1) microfilament 2) intermiate filaments 3) microtubules Microfilament ------ - small fibersof actin protein - found in muscle tissue and account for muscle cantraction - functions in cell division by the formation of the cleavage furrow during telophrase Intermediate filaments ------ - slightly larger diameter than microfilaments - consists of fibrous proteins
Side A ------ Side B Three main points of Cell Theory ------ 1) All living things are made up of cells 2) Cell are the basic units of structure and function in living things 3) Living cells come only from other living cells A cell's size is limited by its ______. ------ Surface area to volume ratio What must a cell be large enough to do? ------ a) hold its organells b) perform chemical reactions What must a cell be small enough to do? ------ Have enough surface area to supply its volume with nutrients Surface area equation ------ length X width X number of surfaces Volume equation ------ length X width X height Surface area to volume ratio equation ------ surface area ------------------ volume As a cell grows, what happens to its surface area to volume ratio? ------ It decreases A cell cube has 3cm/side, what is its: 1) surface area 2) volume 3) Simpliest ratio ------ 1) 54cm2 2) 27cm2 3) 2:1 When a cell grows and it's S.A. to V.R. decreases, what effects does this have of diffusion? ------ Diffusion decreases and becomes less efficient When a cell divides, what happens to its surface area and volume? Why? ------ They decrease causing the ratio to increase and diffusion rate to increase. Because the volume decreases more in comparision to the surface area Is cell division beneficial to the rate of diffusion? ------ Yes How big is a prokaryote cell? ------ 2 - 8 micrometers Does a prokaryote cell have a nucleus? ------ No Where is DNA located in a prokaryote cell? ------ In the cytoplasm Does a prokaryote cell has a cell wall? + ------ Yes, non-cellulose Are there organelles in the prokaryote cell? + ------ A few, but they are nonmembranous Is there mobility in a prokaryote cell? Flagellum? ------ Yes, there is one or more flagellum. What are the features of a bacillus cell? ------ a) rod shaped b) areobic (needs oxygen) c) often occurs in chain What are the features of a cuccus cell? ------ a) spherical b) occurs singular, paired or chains of clusters What re the features of a spirrillum cell? ------ a) spiral shape Gram positive's cell wall & stain ------ Peptidoglycan Blue/purple Gram negative's cell wall & stain ------ Peptidoglycan & lipopolysaccharide Red/organge Facilitated transport goes from _____ to _____ concentration. Why is it a passive transfer? Involves? ------ High to low Because no energy is needed, only a protein carrier Embedded proteins in bilayer Active transport goes from _____ to _____ concentration. Why is ATP required? Involves? ------ Low to high Because solute must travel against concentration Pumps What are the special proteins on bilayer called? ------ Pumps What does APT stand for? ------ Adenosine Triphosphate Endoctosis: Does not involve/cannot enter what? Qualitative size of molecule that cannot fit though? What happens? ------ Protein channels Large They fuse to outer surface of the plasma membrane, the membrane indents and he molecule is absorbed. What is phagocytosis? ------ Cell eating - white blood cell engulfs and digests a pathogen What is pinocytosis? ------ Ingestion of liquid What is exocytosis? ------ Process by which a cell will expel a molecule it has made Secretory vessicle containing a large molecule fusus with the interior of the plasm membrane and expels it contents from the cell. What is the nucleus composition? ------ Double membrane (nuclear envelope) Porous (nuclear pores) Semifluid interior nucleoplasm Unique pH Chromatin (long strands of DNA) What is the function of the nucleus? ------ DNA: contains genes (recipe) for protein synthesis Process called transcription Where is the nucleolus found? ------ Inside the nucleus What is the composition of the nucleolus? ------ Dense mass of rRNA, ribosome subunit proteins What is: rRNA tRNA mRNA ------ ribosomal ribonucleic acid transfer ribonucleic acid messenger RNA What is a ribosome? ------ the protein manufacturing machinery of all living cells In what cells is the nucleus found? ------ Plant and animal cells In what cells is the Ribosome found? ------ Plant, animal and prokaryotes cells What does rER stand for? ------ rough Endoplasmic Reticulum Where is the ribosome located? ------ a) studded on the exterior surface of rER b) cytoplasm-free ribosomes What is the composition of the ribosome? ------ Two subunits: - one smaller than the other - each with a unique mix of proteins What is the function of the ribosome? ------ Work bench for sythesis of the polypeptide chain (1*) What is the process of the ribosome? ------ Translation What is DNA's special feature and role? ------ SF: genetic information R: template for mRNA synthesis during transcription What is mRNA's special feature and role? ------ SF: codons R: sequences of 3 RNA bases (codon) complementary to DNA What tRNA's special feature and role? ------ SF: anticodon R: sequence of 3 RNA bases (anticodon) complentary to mRNA codon What is rRNA's special feature and role? ------ SF: ribosome R: site of polypeptide synthesis during translation What is amino acid's special feature and role? ------ SF: building block of proteins R: transported to ribosome by tRNA during translation What is protein's special function and role? ------ SF: macromolecule essential to life R: amino acid joined in a specific and predetermined order by DNA Where are the endoplasmic reticulum (rough and smooth) found? ------ In plant and animal cells Where is the rough endoplasmic reticulum located? ------ Nuclear envelope What is the compostion of the rough endoplasmic reticulum? ------ Membranous Interconnected tubes/sacs outside surface studded with ribosomes Inside fluid filled with protein enzymes 20 - 40 levels of proteins Where is the smooth endoplasmic reticulum located? ------ The rough endoplasmic reticulum How is the smooth endoplasmic reticulum composed? ------ Membranous interconnected tubules No ribosomes What are the 5 functions of the smooth endoplasmic reticulum? ------ 1) synthesis of lipids 2) produces testosterone and estrogen 3) in liver cells produces enzymes for detox 4) in muscle stores calcium 5) synthesis transport vessels to golgi apparatus In what cells is the golgi apparatus found? ------ Plant and animal cells What is the location of the golgi apparatus? ------ Between the rER and sER and plasma membrane. What is the composition of the golgi apparatus? ------ Membranous Series of flat sacs Vacules "bubbling" What is the function of the golgi apparatus? ------ Packaging and receiving secretion: Receive from rER: protein and a sugar (glyoprotein) Reveives from sER: lipid and adds a sugar (glycolipid) Synthesis lysosomes In what cells are the lysosomes found? ------ Animal cells Where is the lysosome located? ------ Cytoplasm What is the composition of the lysosome? ------ Membranous vacuole Contains digective enzymes What are the 4 functions of the lysosome? ------ 1) digestion: enzymes digest carbs, lipids, protein and nucleic acid 2) defence: white blood cells engulf pathagens 3) cell clean up: digest old organelles 4) embryonic function: digest webbing between fingers and toes in embryo In what cells are the vacuoles found? ------ In the plant and animal cells What is the composition of the vacuoles? ------ Membrane bound various sizes and functions In what cells is the peroxisomes found? ------ Plant and animal cells What is the composition of the peroxisome? ------ Membrane vacuole containing many enzymes In what cells are the mitochondria found? ------ Animal and plant cells Where is the mitochandria located? ------ Cytoplasm What does the mitochandria look like? ------ 7 micrometers length, bean shape brown What is the composition of the mitochondria? ------ Double membrane Outer membrane: porous Inner membrane: porous, enfolded Cristae: individual folds Intermembrane space: between outer and inner membrane, watery enzymes Matrix: jelly-like fluid; contain ribosomes, oxygen, enzyme and DNA What is the function of the mitochondria? ------ Site of cellular respiration: glucose to ATP ATP synthesis What are the unique features of mitochondria? ------ a) ability to reproduce/divide b) liver cell & muscle fiber: greater than 1000 mitochondria per cell In what cells is the cytoskeleton found? ------ In the plant and animal cells What does the cytoskeleton of a cell consist of? ------ Protein fibers forming a thick network with the cytoplasm What are the primary functions of the cytoskeleton? ------ Framework, support, movement of organelles and anchoring organelles are in place. What are 3 types of proteins of fibers which make up a cytoskeleton? ------ 1) microfilament 2) intermiate filaments 3) microtubules Microfilament ------ - small fibersof actin protein - found in muscle tissue and account for muscle cantraction - functions in cell division by the formation of the cleavage furrow during telophrase Intermediate filaments ------ - slightly larger diameter than microfilaments - consists of fibrous proteins
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