reasonably be expected to affect the outcome. For example‚ in the investigation “How does the speed of movement of chloroplasts in Elodea cells vary with light intensity?”‚ the student must state clearly that the independent variable is the light intensity and the dependent variable is the speed of movement. Relevant controlled variables would include temperature‚ preparation of Elodea cells‚ sample size and light quality
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PERFECT SCORE BIOLOGY 2011 BAHAGIAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER KEMENTERIAN PELAJARAN MALAYSIA PERFECT SCORE BIOLOGY 2011 Teacher’s Module 1 PERFECT SCORE BIOLOGY 2011 Paper 2 – Section A: Structural Questions 1. Marks Student notes Diagram 1.1 shows a somatic cell of an insect undergoing meiosis. Process X R: Centromere Q: Chromosome/ chromatid S: Nuclear membrane Diagram 1.1 (a) Label Q‚ R and S in Diagram 1.1. [3 marks] (b)
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less stabilized in the older stages. This trend applies particularly to the heterotrophs‚ whose variety is usually much greater in the later stages of the succession. 3. Net primary productivity (the amount of energy converted into products of photosynthesis by autotrophs‚ and available to heteroptrophs) increases until it reaches a stable high level. Change in net primary productivity during plant succession on an area cleared of an oak-pine forest in Brookhaven‚ New York. The first rise represents
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The vacuole of a plant cell is enclosed by the tonoplast. 8. Human cheek cells and epidermal cells of onions do not have chloroplasts. 9. Epidermal cells of onions have big vacuoles. 10. Cells wall and plasma membranes are fully permeable. 11. Amoeba sp. Uses pseudopodia for movement and to trap food. 12. Cell specialisation allows cells to form tissues. 13. Tissues are organised into functional units called organs. 14. Epithelial tissue holds body structures together‚ providing protection and support
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Transport Systems Essay In single celled organisms‚ nutrients‚ water and various substances that are need for basic cellular processes can easily be transported in and out through the cell membrane. This is an effective transport system for microscopic organisms‚ but multicellular organisms require a more complex transport system to sustain itself. Take humans for example; unlike a cell‚ only the outer layer of skin is in contact with the body’s outside environment. It’s not possible for substances
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Sheet 49 Laboratory 5A: Diffusion & Osmosis – Transporting Substances Across Membranes 55 Objectives: 57 In-Lab Report Sheet 61 Pre-Lab Assignment 65 Objectives: 67 In-Lab Report Sheet 71 Lab 6: Photosynthesis and Cellular Respiration 76 Pre-Lab Assignment 76 Lab 6: Photosynthesis and Respiration 85 In-Lab
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There are more to aquatic plants than just floating on the surface of water. Aquatic plants are plants that can adapt and live in a freshwater environment. They are sometimes called hydrophytes. These include plants that live in fresh wetlands‚ swamps‚ ponds‚ lakes‚ and marshes. This type of plant actually serves two important functions. First‚ they help oxygenate water (2006) and they provide nutrients and food for some fishes (Tappin‚ 2003). There are many types of aquatic plants including rooted
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is t a is n go ot al an ob je ct iv e TYPES OF OBJECTIVES • Cognitive Learning Domain Objective • Affective Learning Domain Objective • Psychomotor Learning Domain Objective Cognitive Domain Affective Domain Psychomotor Domain Th an is o sp d t ne e c h e la if d ck c eg s re co e nd is iti no on t COMPONENTS OF OBJECTIVES • • • • Audience Behavior Condition Degree AUDIENCE • The students... • The learners... • The third grade students... 10 BEHAVIOR • Will be able to list down.
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Online Lab: Carbon Transfer Through Snails and Elodea Record answers in blue‚ bold font Go to http://www.classzone.com/cz/books/bio_07/resources/htmls/virtual_labs/virtualLabs.html (If the link does not work‚ go to http://www.classzone.com/cz/index.htm Enter Science‚ High School; NC; Go Click Biology 2008 (book on left) Click Virtual Labs (left side 2nd row)...continue with directions below) Click on Carbon Transfer Through Snails and Elodea. Read through the directions and complete
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its ability to remove nutrients and toxins from water sources. Thus‚ duckweed will kill the organisms that require similar nutrients‚ yet aid the organisms that would otherwise die to toxins. Specifically‚ if one was to place Elodea plants in a tank with duckweed‚ then the Elodea will die due to the lack of nutrients from the duckweed having used the nutrients for its own benefits. Furthermore‚ if one were to place an organism such as Daphnia in a tank with Duckweed‚ then the duckweed would remove any
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