10.1.3 CROSSING OVER Outline the process of crossing over in : Meiosis 1: • Prophase I - homologous chromosomes are paired up tightly into tetrads‚ then crossing over‚ the exchange of genetic material between the DNA in these tetrads occurs‚ forming a chiasmata‚ an x-shaped structure. • Metaphase I - paired chromosomes line up along the equator of a cell‚ the metaphase plate as the spindle microtubulue apparatus pulls them. • Anaphase I - The spindle microtubules pull homologous chromosomes
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Is the neural pathway significantly longer for a visual stimulus or a sound stimulus (or a pressure stimulus) Data collection and processing Table 1a: Data collected by John Rha and Arthur Hamilton by dropping ruler for calculation of length of the neural pathways (Visual‚ Auditory and Sensual) Trial# | Visual | Auditory(Sound) | Sensual(Pressure) | | (cm±0.1cm) | (cm±0.1cm) | (cm±0.1cm) | | John | Arthur | John | Arthur | John | Arthur | 1 | 43.9 | 24.1 | 33.1 | 34.6 | 50.1 | 50
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Sarah Clay Internal Assessment Design Question: Does the caffeine in Coca-Cola affect blood pressure? Hypothesis: The amount of caffeine in Coca-Cola will cause to the adrenal glands‚ located on the top of the kidneys‚ to release more adrenaline which will in turn cause an increase in blood pressure. As the amount of Coca-Cola decreases‚ so will the difference between initial blood pressure and blood pressure after the consumption of the caffeine. Variables: Independent Variables | Dependent
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How does light intensity affect the rate of photosynthesis? Does the amount of light intensity increase the rate of photosynthesis in a pondweed? Design aspect 1 Introduction My investigation will be centered on measuring the rate of photosynthesis and whether or not light intensity will affect it. The formula of photosynthesis is Carbon dioxide + water oxygen + glucose with the arrow referring to light energy as a means to convert the CO2 and H2O into oxygen and glucose. Logically‚ one would
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How to find success in IB Biology The International Baccalaureate program offers many classes in the vast majority of SL and HL credits with the program and does so with the science section of the program. There are many different HL science classes that can be taken in IB but here at Edison‚ there are only two classes offered once you become a senior who is looking to take an HL science class. The two choices are HL Physics and HL Biology. Both are arguably the toughest IB classes offered at Edison
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IB Biology Potato Lab Table 1: Trial Number | Concentration of Sucrose Solution (M) ±0.2 ml | Initial Mass of Potato Core Slice(g) ±0.1 | Final Mass of Potato Core Slices (g) ±0.1 | 1 | 0.0 | 7.7 | 9.3 | 2 | | 6.0 | 8.1 | 3 | | 6.2 | 7.4 | 4 | | 10.2 | 13.2 | 5 | | 8.7 | 10.3 | 6 | | 4.9 | 6.0 | 7 | | 9.2 | 10.4 | 1 | 0.2 | 5.8 | 6.0 | 2 | | 11.6 | 12.1 | 3 | | 2.5 | 3.1 | 1 | 0.4 | 14.4 | 13.9 | 2 | | 2.6 | 2.8 | 3 | | 8 | 6.5 | 1 | 0.6 | 7.3 | 5.3 | 2
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Extended Essay Guidance and Marksheet (2013 Criteria) General Assessment Criteria Criteria purpose of the essay is specified 1 2 SUBJECT SPECIFIC GUIDELINES ▪ The research question must focus on the human past and not be of a trivial nature. ▪ The research question is stated in the introduction but is not clearly expressed or is too broad in ▪ The research question must be clearly and scope to be treated effectively within the word limit. 0 ▪ The research question is
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increasing the glucose concentration will increase the amount of C02 produced which will suggest that the rate of cell respiration has increased. [pic] II. Hypothesis • While a hypothesis isn’t needed and sometimes it’s not possible‚ usually in biology you will have a hypothesis. If you include a hypothesis to help focus your research question then it needs to be an “if….then…” statement that includes the independent and dependent variables. Your hypothesis should be supported with an explanation
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AP/IB Biology Lab Assessment The effect of various fruit and vegetable cell membranes on their water potential Independent variable: Type of fruit or vegetable. (Produce used: Russet potatoes‚ Pascal celery‚ Gala apple‚ Navel orange‚ and Imperator carrot). The fruit or vegetable will be placed in six 56.7 gram cups‚ ranging with sucrose molarities of 0 (distilled water)‚ 0.2‚ 0.4‚ 0.6‚ 0.8‚ 1.0‚ with 5 trials‚ leading to 30 cups for each produce variable. Dependent variable: The water potential
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Transcription and Translation Notes for IB Diploma Year 1 DNA is a huge information database that carries the complete set of instructions for making all the proteins a cell will ever need! Although there are only four different bases in DNA (A‚ C‚ G and T)‚ the order in which the bases occur determines the information to make a protein‚ just like the 26 letters of the alphabet combine to form words and sentences: Compare: RAT - TAR - ART - same 3 letters; completely different meanings. And
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