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Transcript
DA DA DA DA First • • • how about the cell theory? I’m glad you asked - here it is: All organisms are made up of one or more cells Cells are the fundamental and structural unit of life All cells come from pre-existing cells PROKARYOTIC For example: Bacteria Do not have membrane bound organelles – it’s DNA is throughout the cell, not in a nucleus: EUKARYOTIC o For example: Animal cells o Have membrane bound organelles – the DNA is enclosed by a Nucleus (control center of the cell) ANIMAL CELL PLANT CELL Yup, one thing is a cell wall: The cell wall is used for support of the cell Yup – you guessed it – Chloroplasts Chloroplasts contain chlorophyll which is a pigment that absorbs the sun’s rays – this is important in a process called…….. Photosynthesis is the process by which plants use carbon dioxide (CO2), Water (H2O) and light energy to produce Oxygen(O2) and food in the form of sugar – it looks like this: This is called cellular respiration and it happens in the mitochondria of animal cells. In cellular respiration, sugar is combined with oxygen to produce carbon dioxide, water and energy. Patience – I was getting to it – the cell membrane allows things to flow in and out of the cell: Well, I’m glad you asked. Prokaryotic cells (bacteria) reproduce by a process called binary fission Eukaryotic cells reproduce by a process called mitosis. It is much more complicated than prokaryotic cells and looks like this: 1) 2) 3) 4) All cells come from ____________. Prokaryotic cells do not have ___________. The DNA of eukaryotic cells is in the ________, which is also known as the _______ ________ of the cell. Which cell is this? 5) What is the structure surrounding a plant cell? 6) What is it’s purpose? 7) What is another organelle that a plant cell has but an animal cell doesn’t? 8) What special pigment does the organelle from question 7 have and why is it important? 9) 10) 11) 12) 13) 14) 15) 16) 17) What is photosynthesis? What is cellular respiration? How are the two processes related? What is diffusion? What is osmosis? Why is the cell membrane important? What is the difference between passive and active transport? How does a prokaryotic cell reproduce? What is the name for the process used by eukaryotic cells for reproduction? 1) 2) 3) 4) 5) All cells come from pre-existing cells. Prokaryotic cells do not have membrane bound organelles. The DNA of eukaryotic cells is in the nucleus, which is also known as the control center of the cell. Which cell is this? Plant 5) What is the structure surrounding a plant cell? The cell wall 6) What is it’s purpose? To support the cell 7) What is another organelle that a plant cell has but an animal cell doesn’t? Chloroplasts 8) What special pigment does the organelle from question 7 have and why is it important? Chlorophyll which absorbs the lights rays 9) 10) 11) 12) 13) 14) 15) 16) 17) What is photosynthesis? The process by which light energy and CO2 and water produce O2 and energy What is cellular respiration? The process by which O2 and sugar produce CO2, H2O and energy How are the two processes related? Plants use our CO2 and we use their O2 What is diffusion? When something goes from a high concentration to a low concentration What is osmosis? Diffusion through a cell membrane Why is the cell membrane important? It lets things in and out of the cell What is the difference between passive and active transport? Active transport requires energy How does a prokaryotic cell reproduce? Binary fission What is the name for the process used by eukaryotic cells for reproduction? Mitosis