WebNov 26, 2014 · The compound on which an enzyme acts is the substrate. 3. Enzymes Speed up chemical reactions Activation Energy with enzyme Activation Energy without enzyme Substrate Products: Energy Time • By lowering the activation energy needed to start the reaction. 4. Explain why life cannot exist without enzymes. WebYou can create printable tests and worksheets from these Grade 4 Biology questions! Select one or more questions using the checkboxes above each question. Then click the …
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WebDec 9, 2014 · Recall concept on “Cell surface membrane” which is found in all living cells Partially-permeable membrane that forms a boundary between the cytoplasm of the cell and the outside. Controls the passage of substances (small molecules) entering and exiting the cell. 33. MOVEMENT THROUGH THE PLASMA MEMBRANE. 34. WebSep 27, 2024 · Study the diagram below and answer the following questions. Identify the type of circulatory system shown in diagram above (1mk) Give a reason for your answer in (a)i) above (1mk) Name the parts labelled X, Y and Z (3mks) X. Y. Z. Explain the disadvantage of having the above circulatory system in the animals (2mks) mini christmas tree by post
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WebNov 22, 2024 · Biology Form 2 (176) Biology Form 3 (143) Biology Form 4 (41) Geography (513) History (538) CRE (328) IRE (52) Agriculture (496) Business Studies … Webanswer choices. The breakdown of glycogen to glucose by liver. Islet cells in pancreas are stimulated to secrete glucagon. The conversion of excess glucose into glycogen to be stored in liver and muscle cells. Lipid in the adipose tissues break down to release fatty acids that can be metabolized to generate energy. Webanswer choices. TO PROTECT THE CELL NUCLEUS. TO CONTROL THE IN AND OUT MOVEMENT OF SOLUTES. TO PRODUCE ENERGY IN THE CELL. TO CONTROL … most haunted places in upstate ny