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YEAR 12 BIOLOGY ACHIEVEMENT STANDARD: BIOLOGY 2.8 - DESCRIBE CELL STRUCTURE AND FUNCTION Credits: 3 Assessment: External Cells and Cell Transport State the features that characterise living things (MRS GREN) Explain why cells are called the basic building blocks of life Describe the difference between a prokaryote and eukaryote Describe the basic structure of a prokaryotic and eukaryotic cell Give examples of prokaryote and eukaryote cells Explain the difference between a plant and animal cell Explain what an organelle is Identify the nucleus, nuclear envelope, nucleolus, mitochondria, chloroplasts, rough and smooth endoplasmic reticulum, ribosomes, plasma membrane, cell wall, Golgi apparatus, lysosomes, vacuole, cytoplasm, cytoskeleton, centrioles, cilia, plasmids Describe the location of each of the organelles Describe the features of each of the organelles Describe the function of each of the organelles State whether each organelle is found in an animal and/or plant cell Describe the features of Euglena that allow it carry out life processes (MRS GREN) Describe the features of Amoeba that allow it carry out life processes (MRS GREN) Describe the features of Chlamydomonas that allow it carry out life processes (MRS GREN) Describe the features of Paramecium that allow it carry out life processes (MRS GREN) Explain what cells use cell transport for Describe the difference between active and passive transport Give examples of active and passive transport Describe the structure of the plasma membrane Explain what the phospholipid bilayer is Explain what is meant by selectively permeable membrane Describe the role of the plasma membrane Explain what diffusion is Describe an example of diffusion used by cells Explain what a concentration gradient is Describe the rate of diffusion with a steep and gentle concentration gradient Describe how the rate of diffusion is affected by molecule size, temperature, state of matter and conc. Explain what is meant by the surface area to volume ratio Explain how the surface area to volume ratio affects the efficiency of cell transport Explain why cell size is limited by the rate of diffusion Explain what osmosis is Identify the substance that moves during osmosis Describe the direction of water movement between solution of different concentrations Explain what osmotic equilibrium is Describe the difference between hypotonic, isotonic and hypertonic Explain what turgor and plasmolysis means with reference to plant cells Explain what is meant by osmoregulation Explain what active transport is Explain why active transport needs energy Describe the role of carrier proteins in active transport Give an example of when and where active transport occurs Explain how you tell if a cell has a high energy requirement Describe the difference between endocytosis and ectocytosis Describe the process of endocytosis and ectocytosis Give examples of when and where endocytosis and ectocytosis occur Describe the difference between phagocytosis and pinocytosis -1- YEAR 12 BIOLOGY ACHIEVEMENT STANDARD: BIOLOGY 2.8 - DESCRIBE CELL STRUCTURE AND FUNCTION Credits: 3 Assessment: External Enzymes, Respiration and Photosynthesis! Explain what an enzyme is Explain what a catalyst is Explain what is meant by activation energy State which organic compound group enzymes belong to Explain what an active site is Explain what is meant by the substrate Explain how enzymes are affected by heat Explain what is meant by denature Explain how enzymes are affected by pH Explain how enzymes are affected by concentration Explain how enzymes are affected by chemicals Explain what is meant by optimum conditions with respect to enzyme activity Explain what is meant by metabolism Explain the difference between anabolic and catabolic reaction pathways Explain why enzymes are referred to as highly specific Describe the lock and key model of enzyme function Explain what coenzymes and cofactors are Describe examples of coenzymes and cofactors Explain how coenzymes and cofactors work with enzymes in regulating cell metabolism State what ATP stands for Explain what ATP is used for in cells Describe the role of ATP in cell respiration and photosynthesis Explain what cellular respiration is State the three major steps in cellular respiration Describe the role of mitochondria in cellular respiration Draw and label a mitochondrion Relate the structure of a mitochondrion to its function Identify where each stage of cellular respiration occurs on a mitochondrion Identify the main respiratory substrate for plants and animals Describe the process of glycolysis Describe glycolysis is anaerobic or aerobic State the net yield of ATP and NAD.H2 from glycolysis Explain what needs to be present for the following breakdown of pyruvate Describe the process of the Krebs Cycle Explain where the Acetyl CoA enters the Krebs Cycle from Describe the process of the electron transport system Explain where the hydrogens for the electron transport chain come from Describe the role of oxygen in the electron transport system State the net yield of ATP from aerobic respiration Explain what is meant by the rate of respiration Describe how the following can affect the rate of respiration: amount of oxygen, amount of glucose or fat, demand for energy, temperature Describe the process of photosynthesis State the two major steps in photosynthesis Describe the role of chloroplasts in photosynthesis Draw and label a chloroplast (stroma, grana, thylakoids, location of chlorophyll and other pigments) Summarise the chemical equation for photosynthesis Describe the process of the light dependent phase -2- Describe where in the chloroplast the LDP occurs Explain what is meant by the photoactivation of chlorophyll Explain how water is split to produce oxygen Describe the transfer of energy to ATP and the formation of NADPH 2 Describe the process of the light independent phase Describe where in the chloroplast the LIP occurs Describe how CO2 is fixed and triose phosphate is reduced to carbohydrate Describe the role of ATP and NADPH2 Describe what happens when the rate of photosynthesis increases Describe what happens when the rate of photosynthesis decreases Describe how the following can affect the rate of photosynthesis: light intensity, carbon dioxide, wavelength of light, temperature, chlorophyll concentration in chloroplasts -3- YEAR 12 BIOLOGY ACHIEVEMENT STANDARD: BIOLOGY 2.8 - DESCRIBE CELL STRUCTURE AND FUNCTION Credits: 3 Assessment: External Cell Division State the organic compound group that DNA belongs to Describe the shape of a DNA molecule Explain what a nucleotide is Describe the structure of a nucleotide Name the 4 bases Explain the base pairing rule Describe the relationship between a chromosome and DNA Describe where chromosomes are found Explain what a gene is Explain what a homologous pair is Explain what a centromere is Describe how a homologous pair of chromosomes can be identified Describe the process of DNA replication Describe the base pairing rule for creating a complementary strand from a template strand of DNA State how many chromosomes are made from a single chromosome during DNA replication Explain why DNA replication is called semi-conservative Explain the role of DNA replication in preparing the cell for division Describe what cell division is Explain the difference between a parent and daughter cell Explain the purpose of mitosis State where mitosis occurs Describe the genetic makeup of the daughter cells in comparison to the parent cell State how many daughter cells are produced from each parent cell Describe the 4 stages of the cell cycle Describe the process of mitosis (IPMAT) Explain the difference between nuclear division and division of the cytoplasm (cytokinesis) Define the words: chromatin and chromatid Explain the purpose of meiosis State where meiosis occurs Describe the genetic makeup of the daughter cells in comparison to the parent cell State how many daughter cells are produced from each parent cell Describe the process of meiosis Explain how meiosis reduces the chromosome number (from diploid to haploid) Explain how meiosis produces genetic variation through independent segregation Explain how meiosis produces genetic variation through crossing over Define the words: bivalent, tetrad, chiasma, sister chromosomes, non-sister chromosomes Describe the relationship between fertilisation, mitosis and meiosis -4-