BIOL 2070

BIOL 2070H QUIZZES AND ANSWERS VERIFIED 100% GUARANTEED PASS Fatty acids are composed of all the following elements except: a. Glycerol b. ATP c. Hydrophilic Head d. Hydrophobic Tails e. Phosphate b. ATP Which of the following about the endoplasmic reticulum is false? a. It can sequester calcium b. It is always "studded" with ribosomes c. It surrounds the nucleus d. It extends out to the cell periphery e. It is a dynamic structure that can change its conformation based on th...

CELL BIOLOGY BIOL2070 - STUDY GUIDE QUESTIONS AND VERIFIED ANSWERS WITH COMPLETE SOLUTIONS What are the 4 basic types of chemical communications in cells (with examples)? Endocrine - Hormones transported through bloodstream to different parts of body, ex. Adrenaline Paracrine - Released into extracellular space and acts on cells in immediate vicinity, ex. Histamine Neuronal - Released into space between axon and target cell, ex. Acetylcholine Contact-Dependent - Interacts with a target on...

BIOL 2070 QUIZ ANSWERS TO STUDY FOR FINAL (FROM SIM/STARCH TO TRANSFORMATION)EXAM QUESTIONS AND VERIFIED ANSWERS Starch is a polymer that is made of several thousand _________ monomers. Glucose Sucrose Amino acids Fructose Glucose A positive result for starch hydrolysis means that the enzyme __________ is produced by the bacteria. amylase Oxidase Catalase Hydrolase Amylase Is this plate positive or negative for starch hydrolysis? Positive The black precipitate that is produc...

BIOL2070 FINAL EXAM FLASHCARDS QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS What is the central dogma? All information passes only in one direction, so DNA to DNA, DNA to RNA, and RNA to protein What were the discoveries that have challenged the idea of the central dogma? 1. Reverse transcriptase - RNA can be transcribed back to DNA 2. Proteins can modify other proteins, creating prions What are the steps to transcription? 1. Initiation 2. Elongation 3. Termination Describe the initia...

BIOL 2070 - LECTURE 8/9? EXAM QUESTIONS AND VERIFIED ANSWERS LATEST UPDATE True or False: signals can act over a long or short range True True or False: A cell's response to a signal is always very quick False. It can be slow too How do cell-surface receptors relay extracellular signals? Intracellular signalling pathways What are the three main classes of cell-surface receptors? ion channel receptors, G-protein coupled receptors, and enzyme-linked receptors. FITB: Some intracellula...

BIOL 2070 FINAL EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED describe 3 stages of PCR denaturation = separates DNA strands by breaking H bonds annealing = attaching RNA primers to target DNA sequence extension = adding dNTPs to extend sequence in which direction are primers added during PCR? 5' --> 3' in which direction do the forward and reverse primers bind and get extended? forward primer = binds at start of sequence (left) and goes in 5' --> 3' dire...

BIOL 2070- RESEARCH METHODS FINAL EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED You have a solution of protein that has a concentration of 200.2 ng/mL. What is the concentration in micrograms/L? 200.2 You want to make a 125mL solution with a final concentration of 250mM. The stock solution is 0.5M how much stock solution is needed? 0.0625L Primary piece of literature. What are some ways to identify? Firsthand report of an experiment that was conducted by the authors - Sp...

BIOL 2070 - EXAM DEFINITIONS WITH VERIFIED SOLUTIONS GRADED A++ hypertonic too much water leaving the cell, it will shrink hypotonic too much water in the cell, it will swell isotonic normal, balanced aquaporins channel proteins for water that allow a more rapid diffusion in specialized cells osmotic swelling slow process as outward migration of salts from soil-water to distilled water reservoir is diffusion controlled - can prevent this by squeezing of the cytoskeleton membrane en...

BIOL 2070 - LECTURE 4 EXAM QUESTIONS AND ANSWERS WITH COMPLETE VERIFIED SOLUTIONS FITB: A lipid bilayer is selectively ____________ permeable What are the consequences of a lipid bilayers semi-permeability? - Material inside the cell may be held at different concentrations than the outside - Different ion, food, ATP, and small molecule concentrations - Reactions can happen more efficiently True or False: The movement of ions across a semipermeable membrane drives many processes within a...

BIOL 2070 - LECTURE 1 EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED What are the basic steps of the scientific method? Scientist makes an observation and asks a question. Then they formulate a hypothesis to then generate predictions to be tested. Results of the testing will either support or reject your hypothesis What is Le Chatalier's principle? if any change occurs to equilibrium, the system will shift in a way that brings it back to eq. All cells consist of what? A p...