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BIOL 120 Exam #1 Study Guide

by: Angela Potter

BIOL 120 Exam #1 Study Guide BIOL 120

Marketplace > Towson University > Biology > BIOL 120 > BIOL 120 Exam 1 Study Guide
Angela Potter
GPA 3.69

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Principles of Biology
Christa. Partain
Study Guide
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This 3 page Study Guide was uploaded by Angela Potter on Wednesday January 27, 2016. The Study Guide belongs to BIOL 120 at Towson University taught by Christa. Partain in Fall 2014. Since its upload, it has received 202 views. For similar materials see Principles of Biology in Biology at Towson University.


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Date Created: 01/27/16
Biology 120 Exam 1 Review Scientific Method Describe the characteristics of a scientific hypothesis. Must be testable & falsifiable What are the features of a controlled experiment? The control is the subject or group that is similar in every way to the experimental subject or group EXCEPT that the control does not get the experimental treatment. Distinguish between primary and secondary sources. Primary sources are a paper written by a scientist sent of to a journal Secondary sources are media reports in radio, news paper, magazines, tv Know the following terms & how they relate to the scientific method: Double-blind experiment- Limited knowledge of experimental hypothesis. No knowledge of which group Scientific theory- can explain how the participants belong to. natural world works and is well- Correlation studies- scientist can look at supported by observation and existing data and determine if their is a experiment. relationship or correlation b/w variables. Bias- to make sure a experiment is Does not signify causation. unbiased scientist use control Alternative hypotheses- differences b/w experiments groups. Statistical significance- result is very unlikely due to chance difference b/w the experimental and control groups... results likely represent a true difference. Water, Biochemistry, and Cells List the characteristics of life. Why is pH important for life? It measures the amount of H+ in a solution Describe the physical and chemical properties of water. What’s the difference between adhesion & cohesion? physical-liquid at room temp. they cohere and adhere. can dissolve other substances. Can hold a lot of heat. Expands when freezes less dance then liquid water Chemical- Adhesion- clings to many other substances, wetting them Cohesion- stick to each other, creates surface tension Describe carbohydrate structure(s) and function(s); Know the monomer & polymer Structure- CH2OH, look like a hectagon Function- Provide quick energy Monomer- Monosaccharide: glucose Polymer- Polysaccharides: starch, glycogen, cellulose, chitin Describe protein basic structure and function(s); Know the monomer & polymer Structure- Chains swirled together Function- Control cell processes, Speed life processes (enzymes) form structural parts of cells. Needs specific shape to function. transport lipids. Monomer-AminoAcids Polymer- Polypeptide Describe lipid structure(s) and function(s); Know the monomer & polymer Structure- Triglyceride has 3 fatty acid tails Cholesterol has 0 fatty acid tails Phospholipids have 2 fatty acid tails Function- build cells and hormones. Long term energy storage Monomer- Monoglyceride (one fatty acid chain) Polymer- Triglyceride, Steroids, Phospholipids Describe nucleic acid structure(s) and function(s); Know the monomer & polymer Structure-DNALadder RNAhalf a ladder in RNAinstead of T its U Function- Stores hereditary info from 1 generation to the next and transmits genetic info Monomer- NucleotidesAC G T (or U ) Polymer- NucleicAcid in DNA& RNA Describe the plasma membrane structure and function. Structure- composed of bilayer of phospholipids Function- Controls what substances go in and out of the cell What is Cell Theory? 1. All known living things are made up of cells 2. The cel is structural and functional unit of all living things 3. All cells come from pre-existing cells by division Describe the basic differences between prokaryotic and eukaryotic cells, and between animal and plant cells. • Eukaryotes has DNA& Nuclues but Prokaryotes have DNAbut don’t have a nucles • Eukaryotes-Animal, Plant, Fungi, Protista • Prokaryotes- Bacteria,Archea Prokaryotic Cells have Plasma membrane, Cell wall, Ribosomes, DNA, Cytoskeletal • Elements • Plant cells are larger, have chloroplast, have a cell wall unlike animal cells.Animal cells have a lot more lysosomes then plant cells. Know the following terms:
 pH Cleans Cell, Recycle the amount of H+ in a solution Cell Wall Organic Chemistry Provide Structure Carbon is basis for Organic Molecules Cytoskeleton can form 4 strong bonds with other Give shape to cell. Hold & move atoms.All living things and products of organelles living things Simple Diffusion Macromolecule some very small inorganic molecules Large organic Molecules: Carbs, Lipids, such as O2 & CO2. ex. breath in. Proteins, NucleicAcids Osmosis. High Concentration to low Enzyme NoATP required Protein that speeds up chemical Facilitated Diffusion reactions Water soluble molecules enter & exit by Nucleus passing through the proteins. NoATP Control Center, Contains DNA Required Ribosome Active Diffusion Produce Protein For large Molecules Mitochondrion Moving against concentration gradient. Produce energy Ex Digestion. NeedATP Chloroplast Proteins act like revolving door Creates glucose & oxygen Lysosome Respiration, Digestion, Metabolism What is the job of respiration, digestion, & metabolism? • Digestion-break down of food products into smaller and simpler compounds • Metabolism- chemical reactions w/in the body where compounds are broken down • Respiration- reactions where glucose is broken down and energy is released for use by cell and life processes Why isATP important? How is it made? • ATP is made of adenosine and 3 phosphate groups • ATP is important because it gives cells energy for respiration Know the following terms: Respiration- reactions where glucose is broken down and energy is released for use by cell and life processes Digestion-break down of food products into smaller and simpler compounds Metabolism- chemical reactions w/in the body where compounds are broken down Micronutrient- Vitamins, Minerals,AntiOxidants Vitamin- when ingested they become coenzymes and assist enzyme reactions. Temp & Vitamins Determine effectiveness of enzymes Macronutrient- Water, Carbs, Proteins, Lipids


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