BIOS 1700 Chapter 1 SP25 PDF

Welcome to BIOS 1700 & Dr. Perez  Welcome to BIOS 1700! Get familiar with our Canvas page PowerPoints (PPTs) Reading Guides Study Guides Achieve Assignments Things you need to do to get started: Read the syllabus Add due dates and exam dates to your ca...

Welcome to BIOS 1700 & Dr. Perez  Welcome to BIOS 1700! Get familiar with our Canvas page PowerPoints (PPTs) Reading Guides Study Guides Achieve Assignments Things you need to do to get started: Read the syllabus Add due dates and exam dates to your calendar! Follow the TopHat link to make sure grade books are linked Access Achieve - Book and Homework Platform You have instant access Need to opt out? Returning to BIOS 1700?  Resources - Get Help! Our Graduate Teaching Assistant - Hunter Ray Office Hour Tuesday 11AM-12PM Other Academic Achievement Center Help Drop-In Tutoring Scheduled Tutoring Me! Tuesday - Online Office Hour 2-3PM Wednesday In  Resources - Get Help! BIOS 1100 - Peer Led Team Learning (PLTL) for BIOS 1700 - starts this week! Peer Assisted Learning (PAL) Sessions - 4x/Week Hannah Cabral and Enzo Lewis-Baranyai BIOS Advising and Resource Room (BARR) 1-5 M-F, Irvine 126 Just walk in!  Grading Total Points: 1000 1% (10 points) On-line Quiz (covering Ch 2) 18% (180 points) Exam 1 18% (180 points) Exam 2 18% (180 points) Exam 3 27% (270 points) Final Exam (comprehensive, with emphasis on post- exam 3 material) 15% (150 points) On-line Assignments - Achieve 3% (30 points) In-Class Questions (start week 2)  In-Class TopHat Questions Each question is worth 0.5 pts participation 0.5 pts correctness Typically 2 questions per lecture At least 60 questions asked in total 60 Question worth 1 pt each! n-class question worth 30 points! Class Attendance Counts! >82% Pass ☺ Fail ☹ Ueckert et al. (201 Chapter 1: Life: chemical, cellular, and evolutionary Foundations Section 1.1 - The Scientific Method Section 1.3 - The Cell What is Science? — A body of knowledge that is obtained using the scientific method scribe what you see in these pictures Observations  Questions Why? (List)  Curiosity, Detailed attention, Clear description “What’s going on out there?” Possible answers to explain what is behind what you observed Several different ways to explain “What’s going on? Important: hypotheses must be testable, objective What would happen if a hypothesis is correct? Hypothesis are rejected Test of the hypothesis Repeatable or supported NOT PROVEN A general explanation for “What’s going on?” Supported by a large body of experiments & observations  Practice with Hypothesis vs. Prediction Which is the Hypothesis? Prediction? A. “Immediate feedback increases long term retention of course material.” B. “Students given immediate feedback on course exams will show higher final exam performance compared to students given feedback two days later” Which is the Hypothesis? Prediction? A. “Subjects who drink 6 or more ounces of alcohol will recall significantly fewer names than students given a placebo beverage.” B. “Alcohol impairs long term memory”  Cow Example Cows face the same direction when at rest or feeding  Experimental Design Observational Controlled Experiment – Manipulated –Multiple groups, same conditions Group 1 (almost) Control Group Same Conditions Absence of Introduced Variable Group 2 Test Group Same Conditions One Difference - Introduced Variable  Spontaneous Generation Background: 1600 - Most believe maggots spontaneously appear on meat Observations: – Flies hang around garbage Hypothesis – Maggots come from fly eggs laid on the garbage. Prediction – Keep flies away from garbage  no maggots  Experimental Design Control Test Group ______ Test Group ______ ______ Group Class Attendance Counts! >82% Pass ☺ Fail ☹ Ueckert et al. (201  Biology – the study of life Life is difficult to define, instead list characteristics of living things – Complexity with spatial organization – Composed of cells – Require energy Metabolism – chemical reactions that transform molecules and energy to maintain life – Ability to respond to environment – Reproduction – Evolution – Contains DNA Most dramatic commonalities amongst living organisms: Cellular and Molecular Aspects  The Cell - The Functional Unit of Life the simplest self-replicating entity that exists as an independent unit of life Unicellular Organisms - Bacteria, Yeast, More! Multicellular Organisms - Fruit Flies, Cheetah, Humans, More! One Cell - Wildly Variable Sizes  DNA - An essential feature of the cell DNA stores genetic information Replication DNA molecule Facilitates/Allows for growth, function, response, etc. (RNA and proteins) Central Dogma of Molecular Biology --- more in future Two (very general) types of cells: Prokaryotic cells and Eukaryotic cells Common to both (all cells): - Enclosed by the plasma membrane - Cytoplasm --- inside of this enclosure Eukaryotic cells are more complex than prokaryotic cells Only found in Eukaryotes - Nucleus - Organelles (small compartments) Note: Prokaryotic cells are all single- celled organisms. Eukaryotic cells are single-celled or multicellular organisms. Is this a prokaryotic cell or eukaryotic cell?