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10Z2 - Miss McConachie ! ! ! ! ! ! B2 - Revision! ! Topic 2- Organisms and energy! ! Name:_____________! ! Topic Aerobic Respiration Investigating the Effects of Exercise: PCA Anaerobic Respiration Photosynthesis Factors Affecting the Rate of Photosynthesis Limiting Factors Water Transport Investigating Osmosis: PCA Organisms and Their Environment Investigating the Distribution of Organisms: PCA Prior to revision - RAG Quick Check/ Revision? After Revision RAG 10Z2 - Miss McConachie Key Terms! Term ! ! ! ! ! ! ! ! ! ! ! ! Definition 10Z2 - Miss McConachie ! B2.15 - Aerobic Respiration! ! Define the term Respiration:! ! ! ! Write the word equation for aerobic respiration:! ! ! ! ! Write the balanced symbol equation:! ! ! ! Use a diagram to explain how carbon dioxide, glucose and oxygen move between cells by diffusion.! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Label the following diagram to illustrate gas exchange in the lungs. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 10Z2 - Miss McConachie ! Questions: ! ! 1. Suggest why farm animals that are not allowed to move around need less food than farm animals that can wander around freely.! ! ! ! ! ! ! ! ! ! 2. ! ! ! ! ! ! ! ! ! ! ! ! ! 3. ! ! ! ! ! ! ! ! ! ! ! ! 4. ! ! ! ! ! ! ! ! ! ! ! ! ! Describe how oxygen enters the blood in the lungs.! Capillaries have very thin walls. Why do you think this is important?! Describe two processes inside cells that require energy to occur.! 10Z2 - Miss McConachie ! B2.17 - Anaerobic Respiration! ! Write the word equation for anaerobic respiration:! ! ! ! ! Write the balanced symbol equation:! ! ! ! ! ! The amount of blood circulated by the heart depends on the heart rate and stroke volume. What is the equation for Cardiac Output?! ! ! ! ! ! ! ! What does EPOC stand for (previously oxygen debt) and how does it work? ! ! ! ! ! ! ! ! ! ! ! ! Questions: ! ! 1. Describe what happens to heart rate and breathing rate during exercise.! ! ! ! ! ! ! ! ! 2. At rest an athlete’s heart rate is 60 beats per minute and stroke volume is 76cm3. During exercise these increase to 160 beats per minute and 105cm3. Calculate the increase in Cardiac output. ! ! ! ! ! ! ! 10Z2 - Miss McConachie ! 3. An old textbook contains the sentence ‘The oxygen debt is caused by the body’s need for oxygen to break down lactic acid’. Rewrite this sentence for a more up-to-date textbook. ! ! ! ! ! ! ! ! ! ! ! ! 4. Suggest why it is better to take deep breaths for a few minutes after you have stopped running instead of shallow ones. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 5. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! It is possible to jog for several hours. Suggest why it is not possible to sprint for several hours.! 10Z2 - Miss McConachie ! B2.18 - Photosynthesis! ! Write the word equation for photosynthesis:! ! ! ! ! Write the balanced symbol equation:! ! ! ! ! ! ! Describe the leaf adaptations in the diagram below. Refer to the chloroplast (and chlorophyl), spongy layer (with air spaces), stoma (guard cell) and the waxy cuticle. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 10Z2 - Miss McConachie ! ! Questions: ! ! 1. State two differences between the reactions of photosynthesis and aerobic respiration.! ! ! ! ! ! ! ! ! ! ! 2. If a potato is left in sunlight it will develop a green colour on its surface. Suggest what is responsible for the green colour and why this might be an advantage for the potato. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 3. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! When the stomata on a leaf is blocked it causes the leaf to die. Explain why this happens. ! 10Z2 - Miss McConachie ! B2.20 - Limiting factors! ! What is meant by the term limiting factor?! ! ! ! ! Complete the table to describe how the rate of photosynthesis is affected by each factor.! ! Limiting Factor Light Intensity Temperatue Carbon dioxide ! ! ! ! How does this factor limit photosynthesis !! !! !! !! !! !! !! !! !! !! !! !! ! !! !! !! !! !! !! 10Z2 - Miss McConachie ! B2.21 - Water Transport! ! Describe the adaptations of a root hair cell to enable efficient water uptake.! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Describe using the aid of a diagram how water enters the root hair cell via osmosis. Be sure to describe the type of membrane that is required. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Once minerals and water have entered the plant describe the role of the following:! ! ! Xylem:! ! ! ! ! ! ! ! ! Phloem:! ! ! ! ! 10Z2 - Miss McConachie ! ! Minerals are absorbed via a process called active transport. Describe using the aid of a diagram how this process is carried out. ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Complete the following table to summarise Diffusion, Osmosis and Active transport.! ! ! Active Transport Does it require a membrane? Does it require energy? An example….. Concentration Gradient ! !! !! !! !! !! !! !! ! !! !! Osmosis Dffusion 10Z2 - Miss McConachie ! B2.23 - Organisms and their environment! ! What are the biotic and abiotic factors that can impact the distribution of organisms:! ! Biotic Abiotic ! ! ! ! ! Describe how the following techniques are used and what type of organisms they are used to sample.! ! Sampling technique How it works !! ! !! !! ! !! ! !! !! ! !! ! !! !! ! !! ! !! !! ! !! !! !! ! Quadrats Examples of organisms sampled
