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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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OcrGcseBiology A GatewayScaling up
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16 objective pages available
Transport of Substances Across Cell Membranes1 objectives
- Account for the way substances are transported into and out of cells through diffusion, osmosis and active transport.
Understanding Mitosis and the Cell Cycle for Growth1 objectives
- Communicate the key features of the process of mitosis in growth, including the cell cycle.
Why Cell Differentiation is Essential for Multicellular Organisms1 objectives
- Account for the importance of cell differentiation.
Stem Cells and Meristems: Their Presence and Role1 objectives
- Retrieve and apply knowledge of stem cells are present in embryonic and adult animals, and meristems in plants.
Understanding Stem Cells and Meristems1 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.
The Need for Exchange Surfaces and Transport Systems in Multicellular Organisms1 objectives
- Account for the need for exchange surfaces and a transport system in multicellular organisms in terms of surface area : volume ratio.
Transport of Substances in 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.
The Human Circulatory System: A Double Circuit1 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.
Xylem and Phloem: Structure and Function1 objectives
- Account for the way the structure of the xylem and phloem are adapted to their functions in the plant.
Environmental 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.
Understanding the Potometer and Water Uptake1 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
- Explain how meristems contribute to the ongoing growth and development of plants. [3 marks]
- During embryonic development, early cells are often described as undifferentiated. What does this mean?
- Anna is discussing stem cell research. She states, 'Using embryonic stem cells is ethically complicated, but they have a huge potential for medical treatments. Adult stem cells are easier to obtain ethically but are more limited.' Explain why Anna's statement about the differences between embryonic and adult stem cells is correct. [6 marks]
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