C6H12O6+6CO2. CO2 is converted into simple sugars in the Calvin cycle‚ which occurs in three stages. It takes 6 “turns” of the Calvin cycle for the organism to produce one molecule of glucose. Organisms that are autotrophs use photosynthesis to make their own energy to survive. Heterotrophs eat other organisms because they cannot synthesize their own energy‚ therefor photosynthesis is an important building block of life. (Raven et al.‚
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Study guide for exam 2. Chapter 7 ‐ Membrane Structure and Function Define fluid mosaic model semi‐permeability amphipathic molecules What is the effect of unsaturated fatty acids on membrane structure and properties? What is the effect of cholesterol on membrane structure and properties? Membrane Proteins and Their Functions peripheral Integral proteins Classification based on function (transport‚ enzymatic activity‚ cell‐cell interactions‚ etc.) How do proteins get to cell surface
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Biology - Final Review (50 Questions) Scientific Method Observations: New observations are made and past data are studied Hypothesis: A testable statement is formulated Experiment/Observations: The hypothesis is tested by experiment of further observations Conclusion: The results are analyzed. • If the hypothesis is support. Continue work (multiple experiences) • If the hypothesis is rejected. Start again (new hypothesis) Car Scenario: Observations: Vehicle won’t start Hypothesis:
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most others are harmless. Firmicutes- contains a wide variety of bacteria that has really thick cell walls. This contains the bacteria Bacillus anthracis causing anthrax. Acquificae- are bacteria that live in more extreme environments. They are autotrophs They make their food by breaking down chemicals through the process chemosynthesis.
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Chapter 6-Intro to Metabolism METABOLISM= all the chemical reactions in an organism CATABOLIC PATHWAY (CATABOLISM)• release of energy by the breakdown of complex molecules to simpler compounds EX: digestive enzymes break down food ANABOLIC PATHWAY (ANABOLISM) • consumes energy to build complicated molecules from simpler ones EX: linking amino acids to form proteins ORGANISMS TRANSFORM ENERGY ENERGY- capacity to do work KINETIC ENERGY- energy of moving objects POTENTIAL ENERGY- energy
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chap 17: 1) Which of the following variations on translation would be most disadvantageous for a cell? A) translating polypeptides directly from DNA B) using fewer kinds of tRNA C) having only one stop codon D) lengthening the half-life of mRNA E) having a second codon (besides AUG) as a start codon a 5) A particular triplet of bases in the template strand of DNA is 5’ AGT 3’. The corresponding codon for the mRNA transcribed is A) 3’ UCA 5’. B) 3’ UGA 5’. C) 5’ TCA 3’. D) 3’ ACU 5’. E) either UCA
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Section 9-1 Review Key Ideas 1. Identify the primary source of energy that flows through most living systems The sunlight. Autotrophs use sunlight to make their own food. Organisms that can’t make their own food consumed the food molecules made by autotrophs‚ eat autotrophs or eat organisms that consumed autotrophs. 2. Explain how an organism’s metabolism is related to Earth’s carbon cycle. An organism’s metabolism is related to using energy to build organic molecules which contain
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The three particles that make up atoms are d. protons‚ neutrons‚ and electrons. Which of the following statements about a compound is true? A. The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed. A covalent bond is formed as the result of b. sharing electrons. In a water molecule‚ shared electrons spend more time around the oxygen atom than the hydrogen atoms. As a result‚ the oxygen atom is a. slightly negative.
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BIOLOGY NOTES TERM 1 2003 MICROSCOPY Ocular - lens used for magnification (usually x10) Objectives - lenses used for magnification Lower powerx4 Medium powerx10 High powerx40 Course adjustment - focuses image‚ moves focus quickly Fine adjustment - focuses image‚ moves focus slowly Stage - specimens are placed here Condenser - focuses light Iris diaphragm - controls amount of light passing through the specimen TOTAL MAGNIFICATION = OCULAR MAGNIFICATION X OBJECTIVE MAGNIFICATION CLASSIFICATION
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Our ecosystem relies on the basis of food chains. Food webs work through a series of food chains that link together. Invasive species are a part of our food web. Invasive species pose a great threat to the habitat of the existing native organisms. They can cause major disruptions to the existing habitats and so it is important to be able to stop their damage. Invasive species can be found in many different habitats including land and water. If the population of a given habitat increases‚ then there
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