Siyavula: Life Sciences Grade 10 - Cd3wd.com

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6 CHAPTER 1. LIFE AT THE MOLECULAR, CELLUAR AND TISSUE LEVEL• Medium in which chemical reactions can occur e.g. in the cytoplasm of the cell.• Hydrolysis reactions i.e. water is needed to break down large molecules into smaller molecules e.g.during digestion of food.Figure 1.1Figure X. Illustration of water molecule: the Oxygen atom is in red and the Hydrogen atoms are white.http://www.ickr.com/photos/fogonthedowns/3117758148/MineralsThese are inorganic compounds that living organisms need in order to remain healthy. Minerals areneeded to take part in chemical reactions in life processes. Plants obtain their minerals from the soil.Minerals can also be supplied to plants in the form of fertilisers. Animals get their mineral nutrients fromthe food they eat. Dierent foods contain dierent mineral sources, e.g. dairy products such as milk andcheese contain calcium.Macroelements are nutrients that are required in large amountsMicroelements are nutrients that are required in minute quantities.1.1.1.1 Minerals required by humansTable of mineral nutrients required by humans
Mineral Food Source Function Deciency diseaseMacroelement Nitrogen (N) Meat, sh, eggs,soyaPart of DNA& RNA Part ofamino acidPhosphorus (P) Meat, dairy Part of DNA &RNABone & teethdevelopmentCalcium (Ca) Dairy, bones of sh Bone & teethdevelopmentActionof muscles &nervesPotassium (K) Bananas, meat,dairyMuscle activityLimits growthPoor developmentof bones& teethInhibitsgrowthPoor developmentof bones& teethRickets(children)Poor muscle controlArrhythmicheartbeatSodium (Na) Table salt Osmosis Muscle crampsSulphur (S)Meat, dairy, eggs,legumesComponent ofsome amino acidsin the hair & skinMicroelement Iron (Fe) Meat, legumes Component ofhaemoglobin (inred blood cells)Iodine (I) Seafood, iodatedsaltComponent of thehormone thyroxinZinc (Zn) Seafood, meat Male reproductivesystem.Table 1.1Disorder unlikelyAnaemia (palecomplexion, tired)Goitre (swollenthyroid gland)Prostate problems71.1.1.2 Minerals required by plantsTable of mineral nutrients required by plantsMineral Source Function Deciency diseaseMacroelement Calcium (Ca) Inorganic fertilisers,Ca ions in thesoilCell wall componentChlorosiscontinued on next page
Page 1: Siyavula: Life Sciences Grade 10Col
Page 4 and 5: This selection and arrangement of c
Page 7 and 8: Subject Orientation 1What is Life S
Page 9: school, high school or university.
Page 14 and 15: 8 CHAPTER 1. LIFE AT THE MOLECULAR,
Page 16 and 17: 10 CHAPTER 1. LIFE AT THE MOLECULAR
Page 18: 12 CHAPTER 1. LIFE AT THE MOLECULAR
Page 21 and 22: 151.1.3.3.4 Biological importance
Page 23 and 24: 17Figure 1.81.2.6.3Functioning of e
Page 25 and 26: 19Figure 1.10Figure. X. Aloe vera h
Page 27 and 28: • Inorganic compounds can contain
Page 29 and 30: 23Figure 1.13By grinding his own le
Page 31 and 32: 25Figure 1.14Need annotated image w
Page 33 and 34: 27Figure 1.16Transmission electron
Page 35 and 36: 29Figure 1.181. Nucleolus 262. Nucl
Page 37 and 38: 1.2.1.1.6 MitochondriaA mitochondri
Page 39 and 40: 1.2.1.1.10 Structures unique to ani
Page 41 and 42: 35cell from bursting when water ent
Page 43 and 44: transport vesicleA vesicle that is
Page 45 and 46: State Phase Abbreviation Descriptio
Page 47 and 48: 411.3.1.3 Stages of MitosisFigure 1
Page 49 and 50: 43• The discovery of the organell
Page 51 and 52: 45You are required to produce a TYP
Page 53 and 54: 47• two heat-resistant test tubes
Page 55 and 56: 49Observation• observe the reacti
Page 57 and 58: Chapter 2Life processes in plants a
Page 59 and 60: 2.1.2 Dicot root2.1.2.1 External st
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LightPlants transpire more rapidly
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592.2.1.3 Variation:Be creative and
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1. Fill one jar with plain water, a
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2.5 Unit 2.2 Investigation 1 - Tree
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652.6.1.1.4EndoskeletonThis skeleto
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Available:http://www.clisnotes.com/
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69• provide internal core structu
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712.7.3.3.3 Cardiac muscle• Respo
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3. Strengthen your skeleton by drin
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77i. Do you smoke?ii. Are you overw
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2.10.5Systemic circulation (to all
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(from above) vena cava, and can the
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Figure 10. Circulatory systems of s
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85Figure 2.14Table 2.5The HeartThe
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Figure 11. The relationship of the
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89Figure 2.17from mindsetOne comple
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91Figure 2.18Table 2.7.Human heartb
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93Figure 2.21Table 2.8Heartbeats ar
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95Figure 2.23Table 2.10The heart co
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2.10.15 Middle layer smooth muscle
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Chapter 3Environmental studies3.1 B
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The troposphere is the atmospheric
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3.2 Environment 63.2.1 Environment3
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105Figure 3.1Light reects o of the
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To discover how to reduce your carb
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1093.2.1.7.3 The Story of StuTo see
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Chapter 4Diversity, change and cont
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INDEX 113Index of Keywords and Term
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ATTRIBUTIONS 115AttributionsCollect
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ATTRIBUTIONS 117Module: "UNIT 2.3 T
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Siyavula: Life Sciences Grade 10 - Cd3wd.com

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