cells

• PhysicsAndMathsTutor.com
• The Wealth of Nations was written

  1776
• Rational agents will select the choice which presents the highest benefits
• Governments act rationally by


  Placing the interests of the people they serve first in order to maximise their welfare
• Rationality in classical economic theory is a flawed assumption as people usually don't act rationally
• In a plant, what is formed by a group of xylem vessels?
• What are the functions of xylem vessels?
• A gene for insulin is taken from a human cell and placed in a bacterium. The bacterium can then make human insulin. What is this process called?
• The diagram shows a palisade mesophyll cell. Which structure is not found in an animal cell?
• Which statement is correct for phloem but not for xylem?
• What is the correct order of increasing size of the following structures, from smallest to largest?
• The shaded area of the diagram represents structures found in both plant and animal cells. Which cell structure is from the shaded area?
• A palisade cell and a nerve cell are observed under a light microscope. Only the palisade cell has a
• The diagram shows a palisade mesophyll cell from a green leaf. In which labelled part does photosynthesis occur and where is starch stored?
• Which row describes a root hair cell?
• Three cell structures are listed. Which structures are found in palisade cells and in liver cells?
• The diagram shows two plant cells, P and Q. How does cell P differ from cell Q?
• The diagram shows different types of cells. Which structure do all these cells have?
• The diagram shows a male gamete. Which term describes the level of organisation of this gamete?
• Which description of xylem is correct?
• The diagram shows a student’s drawing of two guard cells. Which label line is not correct?
• How does a liver cell differ from a palisade cell?
• Stem used for conduction

  • Stem
• Organ used for transport

  • Organ
• The diagram shows structures taken from two different organisms. Which structures have the main function of transport?
• At which level of organisation is a root?
• The diagram shows a liver cell. Which features are present in this cell and also in most plant cells?
• Which structure is present in a root hair cell but not in a liver cell?
• Which description of the heart is correct?
• The diagram shows four cells. Which two cells contain cellulose and a vacuole?
• The diagram shows two guard cells from a leaf. Which labelled part would also be found in liver cells?
• The diagram shows part of a leaf in cross-section. Structures X and Y are both part of the same
• The diagram shows a plant cell. Which features show that it is a plant cell?
• In a section through a plant, a student found a group of long, microscopic structures. The structures lacked end walls, cytoplasm and nuclei. Which identification and reason best matches the student’s observations?
• The diagram shows a specialised cell cut in half. What does this diagram indicate about the structure of this cell?
• Which diagram shows chloroplasts in their correct position in a plant cell?
• Which is not an organ?
• What results from the destruction of cilia in the trachea due to smoking?
• When analysing markets, a range of assumptions are made about the rationality of economic agents involved in the transactions
• Producers act rationally by


  Selling goods/services in a way that maximises their profits