Trilogy – Biology – CHAPTER 1 – Cell Biology What do plant cells have that animal cells do not? What is the function of: Nucleus – Mitochondria Ribosomes Chloroplasts Cell Wall Use a diagram and words to describe a specialised cell Sketch and label a plant and an animal cell; Draw and label a diagram of a prokaryote e.g. Bacteria KEY WORDS: Nucleus Diffusion Cytoplasm Concentration gradient Cell membrane Mitochondria Multicellular Ribosome Cells division Chloroplast Stem cell Vacuole Specialised ASSESSMENT: List the main differences between a prokaryotic and eukaryotic cell

Trilogy – Biology – CHAPTER 1 – Cell Biology How is total magnification calculated? What is the equation for: Aerobic respiration? Anaerobic respiration? Fermentation? Draw and label a diagram of mitosis How is the magnification of a an image under a microscope calculated? What is a TEM? What is a SEM? What is the link between mitosis and cancer? What is a stem cell? What are the potential uses of stem cells? Write down one ethical objection to stem cell research? What is therapeutic cloning? What are the characteristics of a Benign tumour? Malignant tumour? KEY WORDS Magnification microscope: Respiration Mitosis Cancer Tumour Stem cell ASSESSMENT:

B1 REVISION – CHAPTER 1 – Cell Biology- mark scheme What do plant cells have that animal cells do not? What is the function of: Nucleus – controls the activities of the cell and contains genetic material Mitochondria - aerobic respiration – energy is released Ribosomes - protein synthesis Chloroplasts - structure containing chlorophyll Cell Wall - strengthens and supports the cell Use a diagram and words to describe a specialised cell Any specialised animal or plant cell with adaptation and function of that adaptation. e.g. sperm cell – enzymes in head to penetrate the egg, many mitochondria for energy release for swimming to the egg, tail for movement. Muscle cell – many mitochondria to provide energy for muscle contraction, protein filaments which slide over each other to produce muscle contraction. sketch and label a plant and an animal cell; . Draw and label a diagram of a prokaryote e.g. Bacteria KEY WORDS: Bacteria Nucleus DNA Cytoplasm Plasmid Cell membrane Mitochondria Ribosome Chloroplast Vacuole Specialised ASSESSMENT: List the main differences between a prokaryotic and eukaryotic cell Prokaryotic – much smaller, No nucleus , DNA not enclosed in nucleus, may have plasmids

Trilogy – Biology – CHAPTER 1 – Cell Biology How is total magnification calculated? Total magnification = magn eyepiece x mag objective lense What is the equation for: Aerobic respiration? Glucose + Oxygen Carbon dioxide + Water (energy released) Or correct symbol equation Anaerobic respiration? Glucose Lactic acid (energy released) Fermentation? Glucose ethanol + carbon dioxide (energy released) Draw and label a diagram of mitosis How is the magnification of a an image under a microscope calculated? Mag image = size of image/size real object What is a TEM? Transmission electron microscope What is a SEM? Scanning electron microscope What is the link between mitosis and cancer? A cancerous cell is a cell dividing by mitosis uncontrollably. The extra cell form tumours What are the characteristics of a Benign tumour? Slow growing, often have capsule around them making them relatively easy to remove , rarely spread to other areas of the body, not cancerous Malignant tumour? Grow faster than benign tumours, can spread t other body tissues, can form secondary tumours . What is a stem cell? Unspecialised cell that can develop into a specialised cell What are the potential uses of stem cells? Medical uses e.g. Faulty red blood cells, diabetes, spinal injuries Write down one ethical objection to stem cell research? Embryo is destroyed – possible life What is therapeutic cloning? Process of creating stem cells with the same genes as the patient, through nuclear transfer KEY WORDS Magnification microscope: Respiration Mitosis Cancer Tumour Stem cell ASSESSMENT: