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Download. All answers. Easy. Medium. Hard. 1a 2 marks. Figure 1.1. Figure 1.1 is a transmission electron micrograph (TEM) image of a chloroplast. Explain why this image was made using a transmission electron microscope rather than a light microscope.
Plant cell (100 μm, DNA molecule (2 nm), virus (100 nm), actin molecule (3.5 nm), bacterium (1 μm. a) light microscope. b) TEM. c) SEM. a) Plant cell and bacterium. b) All of them. c) Plant cell, virus and bacterium. In practice, the theoretical resolving power of an electron microscope cannot always be achieved.
Animal and plant cells have certain structures in common. A jelly-like material that contains dissolved nutrients and salts and structures called organelles. It is where many of the chemical ...
AQA A-Level Biology Cell Structure. Get a hint. Describe the structure of the nucleus. - Surrounded by a nuclear envelope, a semi-permeable double membrane. - Nuclear pores allow substances to enter/exit. - Dense nucleolus made of RNA & proteins assembles ribosomes. 1 / 88.
Study with Quizlet and memorise flashcards containing terms like Label organelle matching the function (3 marks), Describe and explain how centrifuging the culture allowed the scientists to obtain a cell-free liquid (3 marks), Use the scale bar in the diagram above to calculate the magnification of the drawing. Show your working. (2 mark) and others.
Oct 4, 2024 · Here is an interesting 'cell structure and function quiz' designed to test your knowledge about cells and their functions. Cells are the building blocks of the body and consist of the cell membrane, nucleus, and cytoplasm. The cells in the human body are tasked with functions such as metabolism, transportation, and secretion of substances. So, if you have a good understanding of this subject ...
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2.1 Studying Cells QP. 2.2 The Cell Cycle including Mitosis MS. 2.2 The Cell Cycle including Mitosis QP. 2.3 Transport Across Cell Membranes MS. 2.3 Transport Across Cell Membranes QP. 2.4 Cell Recognition & Immune System MS. 2.4 Cell Recognition & Immune System QP. Summary notes and past exam questions by topic for AQA Biology AS and A-Level ...
