Controlled Experiment Has controls Positive Negative Treatment groups Minimized

Controlled experiment has controls positive negative

This preview shows page 7 - 16 out of 29 pages.

Controlled Experiment Has controls Positive Negative Treatment groups Minimized variation All variables carefully controlled Confounding Variable Variable that you are not testing Affects (correlates with) the dependent and independent variables Shoe height! Affects your height Also affects how far you can jump K. BARRETTO FOR BIOL101 | LAB ACTIVITIES FROM DOWDY & YONENAKA 2018
Image of page 7

Subscribe to view the full document.

PROCEDURE PT. 2 1. Carefully read Pgs. 31-33 (“The Effects of Marijuana Use on the Brain”) 2. Discuss the following questions: What is being tested in each study (experimental variable & control)? What scientific information is unclear or missing from these studies? Were the studies controlled? Any confounding variables? How were participants assigned to these groups? Do you think sample size was adequate? Were subjects representative of the K. BARRETTO FOR BIOL101 | LAB ACTIVITIES FROM DOWDY & YONENAKA 2018
Image of page 8
DISCUSSION What was being tested in each of the four studies? What was the conclusion? Twin studies Are there any terms that confused you? Or, any terms that prevented you from drawing conclusions? Longitudinal studies, parts of brain? Were the marijuana studies controlled K. BARRETTO FOR BIOL101 | LAB ACTIVITIES FROM DOWDY & YONENAKA 2018
Image of page 9

Subscribe to view the full document.

CANNABIS Genus name “Cannabis” is used interchangeably with “marijuana” There are many cannabinoids (~400 chemical compounds) in cannabis, including THC There are different ways of isolating these chemicals and ingesting them Schedule I (one) drug Others include LSD, MDMA, and heroin Schedule II (two) drugs include PCP, methamphetamine, cocaine, morphine, and fentanyl What do we mean by addiction? K. BARRETTO FOR BIOL101 | LAB ACTIVITIES FROM DOWDY & YONENAKA 2018
Image of page 10
ACTIVITY 2: TESTING FOR STARCH MOLECULES IN FOOD K. BARRETTO FOR BIOL101 | LAB ACTIVITIES FROM DOWDY & YONENAKA 2018
Image of page 11

Subscribe to view the full document.

MOLECULES (like THC) are too small to be seen We need to TEST for their presence We can use a test called an “ ASSAY K. BARRETTO FOR BIOL101 | LAB ACTIVITIES FROM DOWDY & YONENAKA 2018
Image of page 12
ASSAY An assay is an investigative (analytic) procedure for qualitatively evaluating or quantitatively measuring the presence, amount, or activity of something (the analyte). K. BARRETTO FOR BIOL101 | LAB ACTIVITIES FROM DOWDY & YONENAKA 2018
Image of page 13

Subscribe to view the full document.

ASSAY A test to find out whether something is present and/or how much there is K. BARRETTO FOR BIOL101 | LAB ACTIVITIES FROM DOWDY & YONENAKA 2018
Image of page 14
TYPES OF TESTS OR ASSAYS Qualitative (There or not?) Quantity Amount-based Your measurement is some sort of number Quantitative (How much?) Quality Not amount-based, some color change, behavior, etc.
Image of page 15

Subscribe to view the full document.

Image of page 16
  • Spring '14
  • ACORE
  • K. BARRETTO, Quiz, Study guide

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes