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Scaling up
Revision and exam practice for Scaling up.
16
Objectives
10
Flashcards
10
Questions
90 min
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OcrGcseCombined Science A GatewayScaling up
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16 objective pages available
Substance Transport in and out of Cells1 objectives
- Account for the way substances are transported into and out of cells through diffusion, osmosis and active transport.
Mitosis and the Cell Cycle in Growth1 objectives
- Communicate the key features of the process of mitosis in growth, including the cell cycle.
The Importance of Cell Differentiation1 objectives
- Account for the importance of cell differentiation.
Understanding Stem Cells and Meristems1 objectives
- Retrieve and apply knowledge of stem cells are present in embryonic and adult animals, and meristems in plants.
Understanding Stem Cell and Meristem Functions1 objectives
- Communicate the key features of the functions of stem cells in embryonic and adult animals, and meristems in plants.
Embryonic vs. Adult Stem Cells in Animals1 objectives
- Communicate the key features of the difference between embryonic and adult stem cells in animals.
Surface Area to Volume Ratio and Multicellular Organisms1 objectives
- Account for the need for exchange surfaces and a transport system in multicellular organisms in terms of surface area:volume ratio.
Substances Transported In and Out of Organisms1 objectives
- Communicate the key features of some of the substances transported into and out of a range of organisms in terms of the requirements of those organisms.
Understanding the Human Circulatory System1 objectives
- Communicate the key features of the human circulatory system.
Heart and Blood Vessel Adaptations1 objectives
- Account for the way the structure of the heart and the blood vessels are adapted to their functions.
Adaptations of Red Blood Cells and Plasma for Transport1 objectives
- Account for the way red blood cells and plasma are adapted to their transport functions in the blood.
Water and Mineral Ion Uptake in Plants1 objectives
- Account for the way water and mineral ions are taken up by plants, relating the structure of the root hair cells to their function.
Transpiration and Translocation in Plants1 objectives
- Communicate the key features of the processes of transpiration and translocation.
Adaptations of Xylem and Phloem for Transport in Plants1 objectives
- Account for the way the structure of the xylem and phloem are adapted to their functions in the plant.
Factors Affecting Water Uptake in Plants1 objectives
- Account for the effect of a variety of environmental factors on the rate of water uptake by a plant.
Investigating Water Uptake with a Potometer1 objectives
- Communicate the key features of the way a simple potometer can be used to investigate factors that affect the rate of water uptake.
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Practice preview
- Which statement correctly describes a difference between xylem and phloem structure?
- A student conducted an experiment using a potometer to measure the rate of water uptake of a plant shoot under different conditions. The student placed the potometer in a warm, dry room for 20 minutes and observed that the air bubble moved 4.0 cm. They then moved the potometer to a cool, humid environment for another 20 minutes, and the air bubble moved 1.5 cm. Calculate the rate of water uptake for both conditions and explain the difference in these rates. [4 marks]
- A student investigates the rate of water loss from a leafy shoot using a potometer. They observe that the water level in the capillary tube drops faster when a fan is switched on. Describe the process of translocation in plants, explaining how it differs from transpiration. [5 marks]
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