Lab 4

pdf

School

Los Medanos College *

*We aren’t endorsed by this school

Course

007

Subject

Biology

Date

Jun 23, 2024

Type

pdf

Pages

Uploaded by LieutenantMink2097

Spring 2024 Bio7 Lab 4 — Brine Shrimp & Daphnia they also hatch in the dark? Do they need warm water, or do they require cold conditions? To what extent does salinity play a role in their hatching? What about dissolved oxygen? How might chlorinated water (tap water) have a significant difference on hatching compared to dechlorinated water? Quick Description of Lab Protocol: You will be setting up a control to compare your chosen experimental variable to in order to determine the effects on brine shrimp hatch succegs. You'll get everything set up today, then check back in a week to look for signs of hatching. Thinking Through the Experiment Which question are you most interested in from above paragraph? Have other questions popped up? » Write your testable question below. Do bnne. Shr'\mp PTCDC\" \GS\\— orQorkness 2 With your lab team, you are going to design an experiment that tests the effects of one environmental variable on the hatching of your brine shrimp. » Which environmental condition will represent your test variable? L;Sh’r exposue How will you know your brine shrimp hatched/did not hatch because of your chosen test variable? In this experiment, we want everything (except the test variable) to be the same between the control group and the experimental group. > How will you make sure your experiment is as controlled as possible? Describe your experiment below. -cistance fom lomp Foll coveroge for dork petn digh -place 2 ASheS inSame locakion » What is your hypothesis? How do you think your altered environmental condition will affect hatching? Try writing your hypothesis in an If... then... because... format. Ex: /f we put 1 brine shrimp group in cold water and one in room temperature water (control), then | think fewer eggs will hatch in the cold water because cold slows down the hatching process. I.(} oJe PU‘\' 1 bne Shn np Qroup N WohY ond one inthe dork, the. A0k one ool e lels \i\‘e\l\w hodeh oS v coond \ock neceafonty Wphn enonoy. A, IS} afl

Spring 2024 Bio7 Lab 4 — Brine Shrimp & Daphnia Setting up the Experiment 1. First, set up your control group petri dish. Label one 60mm petri dish “Bio7 Control,” along with your group’s initials. Transfer 10mLs of the mixed marine salt solution into the petri dish. (If salt solution is not pre-mixed, the ratio is 12g [1 Tbsp] of marine salt to 500mL of dechlorinated water) 2. Now, set up your experimental group petri dish. Label your dish “Bio7 Exp,” along with your group’s initials. Alter your water by changing your test variable put 10mL of altered water into your other petri dish. 3. Mark 2 toothpicks at an equal point (6mm from the end) so that each can be used to transfer a relatively equivalent number of eggs. a. For your control, wet a toothpick in the marine salt solution and insert it up to the mark into the packet of brine shrimp eggs. The eggs should stick to your toothpick. Transfer to your petri dish by submerging toothpick in petri dish. b. Repeat these steps for your experimental petri dish using your other toothpick (try to keep everything except your test variable the same!) 4. Cover each petri dish with a lid and seal with tape. Tape the 2 dishes together and put on cart, making sure they are clearly labeled. Record any notes about your set-up here. Did anything unexpected come up? mushlq 30-40 e%g Dock-¥infbil Lignt=lamp (far awoy) \ 5. Allow your dishes to sit for a week. We’'ll check back on them next week! 6. Examine your petri dishes with a magnifying lens or dissecting microscope and record your observations. You may see 1) live brine shrimp, 2) dead or immature brine shrimp and/or 3) unhatched eggs, as shown in below pictures: After 48 hours students may observe a)live brine shrimp b) dead or immature brine shrimp and c) unhatched eggs. igure 2: http://pubs.ninaa.nih.goy/publications/Science BetterSafe ThanSorry/Instru 7. What did you see in each of your petri dishes? Collect your data here: ie)| Treatment: (Dork) Lmovirg ovouedh hokcheds 1ot mown \oke V&N& [nok lots. egas presen Movingdy w

Spring 2024 Bio7 Lab 4 — Brine Shrimp & Daphnia 8. Make a data table that shows what you observed for your control group v. your experimental group. Record your data in the class data table on board/in spreadsheet. Treodment 100 Contvol T Olive, Activity #2 — Daphnia A Daphnia is a tiny crustacean that has a transparent exoskeleton and inintad lane Nanimia -

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Spring 2024 Bio7 Lab 4 Final Thoughts Lab 4 — Brine Shrimp & Daphnia 1. What did you learn about the process of science by doing both these experiments? I \eorned 4hat Wis necessony for bietic thngs o hove Some sork ob bOhY 10 Syt hat did you take away from your Daphnia experiment? How did your test variable pear to affect Daphnia heart rate, if at all? N\ eport on the Daphnia class findings. Make 3 claims & provide evidence to support t using the class data. 4. Report on the brine shrimp class findings. Make 3 claims & provide evide! (g\ to Sgl%?g:t ih'.elr?ogfel;‘% th?dfg %Sﬂd\i?ci ¥ uinegar hod re&g)\’tcd hea kﬂ\c Shrinnp n r,\fihcm,%wwerxx grovp Yo e Controgh ng the contro Qrovp wohi e ended coidh 60 live Shamp: Cloin & The m\kdq'.ag ot the ShrimP o0 dascooered n the Sl h%‘grfwj'\if oups by Woih teoms thort ooked into the impoct ot heo g e control < nod o greoder soival Yote howeuer resolted in Oolve in eotmend \groups- 5. How might scientists use Daphnia & brine shrimp to test the effects of agriculture, climate change, or other human,impacts on ecosystem health of south San , £ Francisco Bay and the Delta? %OC"\{'.‘S*S’ might VS pop\“"\*‘o‘ % bng\& s:g:mp bq conducting, (roessold, ke bfifi:& 10 di Merent cootexr somples 10 -expexionéant for foncrtyor ony heebd\ tanas. 6

Related Documents

Copy_of_Bacteria_Wrap-Up_Worksheet_(Individual)_(View_Only).docx

0.pdf

Prospectus. Group-DJ RAZ. NURS 6324.docx

FINAL_LABS_BIOS255_Labs_BIOS_255_Week_5_Immune_System copy.docx

BIOL 2260L Extra Credit Opportunities.docx

Emma Bythewood - BIOL 2260L Extra Credit.docx

Quiz #1 Genetics_ ARCH131 OL01 Human Origins.pdf

Habilidades Gerenciales. Examen 3. Grupo 2.docx

IMMUNE SYSTEM.docx

Tarea 1.2 Prueba Corta.docx

Cycle 3 Remediation.docx

Formative and Summative Assignment.pdf

Recommended textbooks for you

Biology 2e

Biology

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:OpenStax

Biology: The Unity and Diversity of Life (MindTap...

Biology

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cengage Learning

Biology: The Dynamic Science (MindTap Course List)

Biology

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Cengage Learning

Biology: The Unity and Diversity of Life (MindTap...

Biology

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cengage Learning

Aquaculture Science

Biology

ISBN:9781133558347

Author:Parker

Publisher:Cengage

Biology (MindTap Course List)

Biology

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Cengage Learning

SEE MORE TEXTBOOKS

Recommended textbooks for you

Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Aquaculture Science
Biology
ISBN:9781133558347
Author:Parker
Publisher:Cengage
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning