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Exam (elaborations) Biology Notes(The Fundamental Unit980
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2

juli 2024

2023/2024

A+
Organelle Description Function Animal, Plant or Both CELL WALL Rigid, tough, made of cellulose Protects and supports the cell Plant CELL MEMBRANE Thin, covering, protects cells Protects the cell, performs active transport and passive transport, moves materials in and out of the cell, communication Both CYTOPLASM Jelly like substance that contains organelles Pads and supports organelles inside the cell. Moves by cyclosis Both NUCLEUS Dense, ball shaped structure, contains ...
leonardkinyua
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Exam (elaborations) Biology Notes(The Fundamental Unit980
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7

juli 2024

2023/2024

A+
all living organism are made up of cells and functional unit as it is the smallest structure capable of performing basic life processes. Two postulates of the cell theory are1. All organisms are made up of cells. 2. All cells exist from pre- existing cells. B) Who discovered cell-It was discovered by Robert Hooke in 1665.Other discoveries about cell are: a) Robert Brown –Nucleus of the cell in 1831 b) Anton Van Leeuwenhoek – Free living cells in pond water (bacteria) in 1674 c) Pur...
leonardkinyua
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Exam (elaborations) Biology Notes(The Fundamental Unit980
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4

juli 2024

2023/2024

A
ain reasons why Students Perform Poorly in the Biology Subject Confusion of biology concepts and terminologies. Inability to recall ideas about the subject content (subject matter). This could be attributed to lack of interest and concentration in class and poor study habits hence the meaning of the content is never grasped. Use of poor vocabulary-lack of good English command to express ideas e.g. the relaxation of erector pili muscles cause the hair to fall down instead of lie flat on the...
leonardkinyua
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Exam (elaborations) Biology Notes(The Fundamental Unit980
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26

juli 2024

2018/2019

A+
BIOLOGY PAPER 2 QUESTIONS & ANSWERS CBIOLOGY PAPER 2 QUESTIONS & ANSWERS
leonardkinyua
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Exam (elaborations) Biology Notes(The Fundamental Unit980
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194

juli 2024

2023/2024

A+
to destroy almost all the structures in the cell but didn’t damage it. This puzzle was solved when lysosomes were discovered as tiny particles visible in the cytoplasm. It was found that they contained the destructive enzymes. These enzymes normally do not come in contact with the rest of the cell. The materials that need to be destroyed are transported to the lysosomes. Then the lysosomes get them digested at times, the lysosomes burst and the enzymes are released to digest the cel...
leonardkinyua
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Exam (elaborations) Biology Notes(The Fundamental Unit980
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164

juli 2024

2023/2024

A+
Biology higher level paper 1A specimen question paper Biology higher level paper 1A specimen markscheme Biology higher level paper 1B specimen question paper Biology higher level paper 1B specimen markscheme Biology higher level paper 2 specimen question paper Biology higher level paper 2 specimen markscheme Biology standard level paper 1A specimen question paper Biology standard level paper 1A specimen markscheme Biology standard level paper 1B specimen question paper Biology standard ...
leonardkinyua
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Exam (elaborations) Biology Notes(The Fundamental Unit980
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15

juli 2024

2023/2024

A+
Science Bowl Questions – Biology, Set 2 1. Multiple Choice1. Multiple Choice: The adult human of average age and size has approximately how many quarts of blood? Is it: a) 4 b) 6 c) 8 d) 10 ANSWER: B -- 6 2. Multiple Choice: Once the erythrocytes enter the blood in humans, it is estimated that they have an average lifetime of how many days. Is it: a) 10 days b) 120 days c) 200 days d) 360 days ANSWER: B -- 120 Days 3. Multiple Choice: Of the following, which mechanisms are impor...
leonardkinyua
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