Fichas
Cell structure
Fichas del conjunto (49)
- 1what has eukaryotic cells?plants, animals, fungi, protoctists
- 2what has prokaryotic cells?bacteria, cyanobacteria
- 3what is the difference between unicellular and multicellular?unicellular-organisms consist of one cell
multicellular-organisms consist of many different cells - 4what is the word that states that multicellular organisms cells all have different functions?specialised
- 5what does a eukaryotic cell contain?nucleus, chloroplast, mitochondrion, R/SER, goligi body, ribosomes, lysosomes, centrioles and vacuole
- 6what does a nucleus contain?outer membrane, inner membrane, pore in nuclear envelope, nucleoplasm, chromatin, nucleolus and dna as chromosomes
- 7functions of the nucleus?- nuclear envelope controls entry and exit of maerials
- control centre of cell through mRNA production
-retains genetic material
-manufacture RNA and ribosomes - 8what does the mitochondrion contain?outer membrane, inner membrane, folds of cristae and matrix
- 9what is the function of the mitochondrion?site for aerobic respiration through ATP synthesis
- 10what does the endoplasmic reticulum contain?nucleus with nuclear envelope, cisternae with ribosomes on rough endoplasmic reticulum but none on smooth endoplasmic reticulum
- 11what is the role of the smooth er?lipid synthesis and transport
- 12what is the function of rough er?protein synthesis and transport
- 13what is the structure of Golgi body?folds called cisternae like sacs, vesicle from ER enter which contain proteins, lysosomes exit with enzymes inside
- 14what is the function of Golgi body?modifying and labelling eg adds carbs to proteins to produce glycoproteins
produce enzymes
transport, modify store lipids
form lysosomes - 15what is the structure of ribosomes?made up of protein and rRNA. 1 large and 1 small sub unit
- 16what is the function of ribosomes?protein synthesis
- 17what is the structure of lysosomes?just little circles
- 18what is the function of lysosomes?contain digestive enzymes responsible for destroying worn out organelles and digesting the contents of vacuoles fromed by phagocytosis
- 19what is the structure of centrioles?spindle shaped short cylinders made of 9 fibres
- 20what is the function of centrioles?make protein fibres to aid cell dividsion by helping to move chromosomes
- 21what is the structure of a chloroplast?outer membrane, inner membrane, stoma, itergranal lamellae, thylakoids, many making up a granum
- 22what is the function of chloroplasts?found in plants, site of photosynthesis
- 23what is the strcuure of a vacuole?cell wall, cell membrane, tonoplast, vacuole
- 24what is the function of vacuole?storage site for materials such as cell sap and helps support young plants
- 25chloroplast - p or a?plants
- 26cell wall p or a?plants
- 27vacuole p or a?single large in plant, many small in animal
- 28centrioles p or a?animals
- 29plasmodemata p or a?plants
- 30what is a plasmodesmata?channels that connect the cytoplasm of adjacent cells by connecting strands
- 31when our cells become specialosed is known as...differentation
- 321 example of specialised cell and functionred blood cells carry oxygen in the blood
- 332nd example of specialied cell and fucntionwhite blood cells to fight off infection
- 343rd example of specialised cella dn functionskin cells act as barrier
- 35what is a tissue?a group of similar cells performing one particular function
- 36what is lots of different types of tissue make up?an organ
- 37what does lots of organs working together make?and organ system
- 38what do prokaryotic cells not have?membrane bound organelles or a membrane bound nucleus
- 39what is the dna like on prokaryotic cells?single stranded not held in the nucleus
- 40what does a prokaryotic cell contain?mesosomes, cell wall, cell membrane, cytoplasm, plasmid, dna strand, slime capsule, ribosomes, starch grains and flagellum
- 41difference between eukaryotic ribosomes and prokaryotic ribosomeseukaryotic has large - 80s
prokaryotic has small - 70s - 42difference in dna in eukaryotic and prokaryoticeukaryotic - held in the nucleus and is double stranded
prokaryotic - not held in nucleus and is single stranded - 43difference in cell wall in eukaryotic cells and prokaryotic cellseukaryotic - cell wall made of murein
prokaryotic - cell wall made of cellulose (plants) - 44what is used to see viruses?electronmicroscope
- 45why are viruses called non-cells?no cytoplasm , no organelles and no chromosomes
- 46what do viruses consist of?DNA sheath, capsid tails and nucleic acid
- 47where do viruses multiply?host cells
- 48why is inner membrane (cristae) in mitochondria folded?to increase SA for the proteins involved in the genereation of ATP to maximise respiration
- 49why does muscle cells require more mitochondria than skin cells?they require more energy to contract than skin cells
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- Biology Fichas sobre Cell structure, creado por paigexmonks el 19/05/2013.
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