Flow Cytometry Presentation
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Cell biology
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Chapter 6 Test Bank AP Bio
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Campbell's Biology, 9e (Reece et al.) Chapter 6 A Tour of the Cell
AP Biology Free Response Questions
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AP BIOLOGY EXAM ESSAY (FREE RESPONSE) QUESTIONS General directions: Answers must be in essay form. Labeled diagrams may be used to supplement discussion, but in no case will a diagram alone suffice. It is important that you read each question completely, and answer each section of the question. When giving examples, the first ones you give will be the ones graded. (if two examples are asked for, and you write about 4, make sure the first two are the best ones; they are the only ones counted!) UNIT 1 BIOCHEMISTRY, WATER, ENZYMES #1 (1996) The unique properties of water make life possible on earth. Select three properties of water and a. for each property, identify and define the property and explain it in terms of the physical/chemical nature of water.
Campbell Biology Chapter 11
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? 2017 Pearson Education, Inc. Lecture Presentations byNicole Tunbridge and Kathleen Fitzpatrick Chapter 11Cell Communication 1 Concept 11.1: External signals are converted to responses within the cell Cells can signal to each other and interpret the signals they receive from other cells and the environment Signals are most often chemicals The same small set of cell-signaling mechanisms shows up in diverse species and processes Communication among microorganisms provides some insight into how cells send, receive, and respond to signals ? 2017 Pearson Education, Inc. 2 Evolution of Cell Signaling an example The yeast Saccharomyces cerevisiae has two mating types, a and ? Cells of different mating types locate each other via secreted factors specific to each type
Campbell Biology Chapter 7
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? 2017 Pearson Education, Inc. Lecture Presentations byNicole Tunbridge and Kathleen Fitzpatrick Chapter 7Membrane Structure and Function 1 Life at the Edge The plasma membrane is the boundary that separates the living cell from its surroundings The plasma membrane exhibits selective permeability, allowing some substances to cross it more easily than others Transport proteins are often responsible for controlling passage across cellular membranes ? 2017 Pearson Education, Inc. 2 Concept 7.1: Cellular membranes are fluid mosaics of lipids and proteins Phospholipids are the most abundant lipid in the plasma membrane Phospholipids are amphipathic molecules, containing hydrophobic (?water-fearing?) and hydrophilic (?water-loving?) regions
Campbell Biology Chapter 6
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? 2017 Pearson Education, Inc. Lecture Presentations byNicole Tunbridge and Kathleen Fitzpatrick Chapter 6A Tour of the Cell 1 Concept 6.2: Eukaryotic cells haveinternal membranes that compartmentalizetheir functions The basic structural and functional unit of every organism is one of two types of cells: Prokaryotic Eukaryotic Only organisms of the domains Bacteria and Archaea consist of prokaryotic cells Protists, fungi, animals, and plants all consist of eukaryotic cells ? 2017 Pearson Education, Inc. Comparing Prokaryotic and Eukaryotic Cells Basic features of all cells: Plasma membrane Semifluid substance called cytosol Chromosomes (carry genes) Ribosomes (make proteins) ? 2017 Pearson Education, Inc. Prokaryotic cells are characterized by having No nucleus
AP biology test bank chp 12
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Campbell's Biology, 9e (Reece et al.) Chapter 12 The Cell Cycle In this chapter, 24 questions are new, and 12 have been altered to incorporate new material from the textbook. As in the other chapters, any questions that depend on figures or introductory scenarios have been placed at the end of the chapter rather than in concept sequence. Multiple-Choice Questions 1) The centromere is a region in which A) chromatids remain attached to one another until anaphase. B) metaphase chromosomes become aligned at the metaphase plate. C) chromosomes are grouped during telophase. D) the nucleus is located prior to mitosis. E) new spindle microtubules form at either end. Answer: A Topic: Concept 12.1 Skill: Knowledge/Comprehension
Solubility rules
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Solubility Rules 1. All common salts of the Group 1 elements and ammonium ion are soluble. 2. All common acetates and nitrates are soluble. 3. All binary compounds of Group 17 elements (other than F) with metals are soluble except those of silver, mercury(I), and lead. 4. All sulfates are soluble except those of barium, strontium, lead, calcium, silver and mercury(I). 5. Except for those in Rule 1, carbonates, oxides, sulfides, and phosphates are insoluble. 6. Oxides and peroxides are always written in molecular form. 7. Gases are always written in molecular form. 8. The only strong bases are the hydroxides of Group I & II metals except beryllium. 9. The only strong binary acids are those of chlorine, bromine, and iodine.
AP Bio_Meiosis
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Concept 13.3: Meiosis reduces the number of chromosome sets from diploid to haploid * Like mitosis, meiosis is preceded by the replication of chromosomes * Meiosis takes place in two consecutive cell divisions, called meiosis I and meiosis II * The two cell divisions result in four daughter cells, rather than the two daughter cells in mitosis * Each daughter cell has only half as many chromosomes as the parent cell The Stages of Meiosis * Chromosomes duplicate before meiosis * The resulting sister chromatids are closely associated along their lengths * This is called sister chromatid cohesion * The chromatids are sorted into four haploid daughter cells * Division in meiosis I occurs in four phases: Prophase I
prokaryotic cell biofact sheet
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The Prokaryotic Cell B io F actsheet September 2000 Number 73 1 The contents of this Factsheet cover the relevant AS syllabus content of the major examining boards. By studying this Factsheet the candidate will gain a knowledge and understanding of the structure of a prokaryotic cell, the range of prokaryotic organisms and the importances of prokaryotic organisms. Introduction Bacteria (eg Escherichia coli) and Cyanobacteria (blue-green algae) (eg Nostoc) are single-celled and characteristically possess no nucleus. They are prokaryotic organisms. Remember ? the Cyanophyta or blue-green algae are now classed as Cyanobacteria because they are prokaryotic. Algae are all eukaryotic since they possess nucleated cells and cell organelles. In some older
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