Chapter 11: Cell Communication Cell-to-cell communication is essential in multicellular organisms. They must communicate to coordinate activities such as growth and development‚ and reproduction. In addition unicellular organisms communicate with each other. Signals may use light‚ or touch but we will focus on chemical signals. 1. External signals are converted to responses within the cell a. Evolution of cell signaling i. In yeast a cells and αcells both secrete chemicals
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Reflection: SS Chapters 6 & 7 I believe that there is much that we take for granted in our world today. One of these things we take for granted in the instant “treatment” for plants. We do so without even a second thought or consideration and continue to let it happen year after year. We also take for granted our everyday dependencies that stem from nature. I then question what it would take for us to realize our dependency on nature and to respect it as such. On page 73 of the reading‚ it discusses
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NOTES FROM MR.ANDERSON’S WATER POTENTIAL VIDEO (SAVES TIME AND EFFORT!) Water potential is the potential energy of water per unit area compared to pure water. Which allows you to figure out where water’s going to flow due to osmosis‚ gravity‚ pressure and even surface tension. It also allows you to figure out if water will flow in the first place and if it will flow into the cell or not. Water Potential (symbol psi) = Solute Potential (symbol psi s) + Pressure Potential (symbol psi p) Solute
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AP ESSAY ANSWERS: 16-20 1. Information transfer is fundamental to all living organisms. For TWO of the following examples‚ explain in detail‚ how the transfer of information is accomplished. A) The genetic material in one eukaryotic cell is copied and distributed to two identical daughter cells. B) A gene in a eukaryotic cell is transcribed and translated to produce a protein. C) The genetic material from one bacterial cell enters another via transformation‚ transduction or conjugation
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Calvin Williams Chapter 20 1. Advances in recombinant DNA technology allow scientists to work with smaller fragments of DNA‚ give them more tools to dissect and analyze DNA‚ and also allow for them to make many copies of a strand of DNA. 2. Restriction enzymes are made by bacteria to cut up invading DNA. They target specific base sequences in the DNA and then work to cut out those sequences from the DNA. 3. When a restriction enzyme cuts out a portion of DNA‚ it will sometimes leave a sticky
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AP Biology Name: Chapter 51 Guided Reading 1. How do behavioral ecologists define behavior? Behavioral ecologists define behavior as everything an animal does and how it does it 2. What is the focus of: a. Proximate questions of behavior? Focuses on the environmental stimuli‚ if any‚ that trigger a particular behavioral act‚ as well as the genetic‚ physiological‚ and anatomical mechanisms underlying it. b. Ultimate questions of behavior? Focuses on the evolutionary significance
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Adapted from L. Miriello by S. Sharp AP Biology Guided Reading Chapter 23 Evolution Name __________________________ 1. What is the smallest using of evolution and why is this important to understand? 2. Define the following terms: a. Microevolution b. Population c. Population genetics d. Gene pool 3. What is the Hardy-Weinberg Theorem and why does it appear to be an apparent contradiction to evolution? 4. What is Hardy-Weinberg equilibrium? What are the five conditions for H-W
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Biology has been the most interesting and appealing subject I have taken. Taking the course as a freshman‚ and the AP course as a junior‚ has really influenced my choice of a potential major. The course taught me how to be more studious and efficient with the information I retain. It is a puzzle‚ in which you piece together process by process‚ step by step. AP Biology also enhanced my collaboration skills. The course is very rigorous and challenging‚ and I struggled often trying to do it all by myself
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Chapter 1- 2 CHAPTER 1 INTRODUCTION: THEMES IN THE STUDY OF LIFE OBJECTIVES Exploring Life on Its Many Levels 1. Briefly describe the unifying themes that characterize the biological sciences. 1. The cell an organism’s basic unit of structure and function 2. Heritable information: the inheritance of biological information in the form of DNA which is encoded in the nucleotide sequence of DNA. 3. Emergent properties: emerge as a result of interaction among components at the
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• Organic chemistry- special study of chemistry dealing with molecules containing carbon and hydrogen • Hydrocarbon- an organic molecule consisting only of carbon and hydrogen. • Functional groups- a specific configuration of atoms commonly attached to the carbon skeletons of organic molecules and involved in chemical reactions. • Hydroxyl group: a chemical group consisting of an oxygen atom joined to a hydrogen atom. Molecules possessing this group are soluble in water and are called alcohols
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