User:Brianna Belo/Notebook/Biology 210 at AU

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Lab 1: Transect Description


Transect 3 was located in an outdoor garden space in between Bender Sports Arena, Hughes Hall, and the campus amphitheater. This transect was concluded to be a man made habitat, consisting of forestry, shrubbery, and designated areas for seating so that the space could be enjoyed by students. The biotic factors observed in transect 3 were gnats, berries, squirrels, birds, and trees, while the abiotic factors were rocks, cigarettes, candy wrappers, bench, and many lampposts.

Lab 2: Hay Infusion Observations and Serial Dilutions

Initial Hay Infusion Observation: Evaporation, thicker film with more mold growing under, stronger odor (still swamp-like), leaves have lost color.

Plate Observations: Tet positive plates have orange yellow colonies that are fewer in number, the colonies are also convex and umbonate, from the agar plate surface, these plates Tet negative plates have smaller white colonies that are much greater in number, and less uniform in formation, these white colonies also seem to be raised, these plates also have condensation in them unlike their tet positive counterparts

Tet positive 10x-5 and 10x -7 have large white colonies, which have fiberous growth patterns

Colony Morphology: from each sample, tet positive and negative, yellow and white, the most recognizable bacteria had were small coccus shaped formations, especially for the white tet positive slide, which presented hundreds of very tiny coccus shaped bacteria

Observed Motility:

because the bacteria cells found were so small and all coccus in shape the motility determined was  overall immobile, non of the bacteria from the samples moved

Gram Stain Results: Tet negative, yellow, lots of coccus but also strepobacilli present, gram positive because of blue color Tet negative, white colony, filamentous Tet positive, yellow colony, coccus, filamentous Tet positive, white colony, strerptococci


(Section.Transect.Sample) 3.3.+ : Section 3, Transect 3, tet positive, yellow colony 3.3.- : Section 3, Transect 3, tet negative, yellow colony

2/2 Lab 3: Hay Infusion and Protist Identification

Initial Hay Infusion Observations The Hay Infusion for Transect 3 had a distinct odor of manure, decay and stagnate water - almost swamp-like. Since the water had been still for about a week there were few dirt particles suspended, instead most of the dirt had collected into the base of the jar, leaving the yet to be stirred product relatively translucent. The water line had receded indicting that evaporation occurred. There was a thin layer of film/growth that had formed on the water's surface. In addition, around the edges of the jar, but on the water's surface, spots of light grey-green mold had begun to grow as well. The Infusion also consisted of plant matter (a branch with a few leaves), and a piece of rotted bench wood. Growth seemed to favor the niches closest to the plant matter, however, there had been some initial algae growth that remained on the bench. Samples were drawn from these niches and from the mid section of jar, consisting primarily of freely suspended dirt particles.


Protist Identification Overall, 3 of 4 samples taken provided produced identifiable organisms. The following organisms identified within the Hay infusion were Euglena, Gonium, Chilomonas, Euglena, and Actinosphaerium. The first sample was taken was from the thin layer of film on the surface of our hay infusion. From this sample we observed small green colored organisms, these organisms had accumulated into a small colony of about 16, indicating that we had found Gonium protists.This sample also contained singular, motile cells, motion of these cells had been achieved through the use of one flagella. In addition these cells were green-brown in color, making them Euglena protists. Our second sample was collected from the center of the jar, which consisted mainly of suspended dirt particles. This sample contained organisms that had collected in relatively large colonies that were brownish in color, when more closely observed it was clear that these organisms were elongated and narrow in shape, indicating that these protists were Chilomonas. The final sample was collected from underneath a section of plant life that had been submerged in the solution. This sample revealed organisms that were colorless and floating with no recognizable motion, according to the dichotomous key these were Actinosphaerium. While Actinosphaerium were described to have radiating spines, these spines were not visible because the microscope was not zoomed into the cells enough.

Transect3Gonium.JPG Transect3Gonium(2).png

The images above depict Gonium, protists that are notable for their greenish in color, and their formation colonies of about 16.

Transect3ChiloandActi.JPG Transect3Chilo.png Transect3Acti.png

The images above depict both Chilomonas and Actinosphaerium protists, both of these organisms are colorless, however Chilomonas are larger and much more elongated than the small, spherical Actinosphaerium.

Conclusions Out of all the organisms identified, the Euglena was the only cell found to be photosynthesizing. The Euglena found were green-brown in color, implying that the cells contained chloroplasts, organelles that enable the process of photosynthesis. [meets needs for ] At the conclusion of the lab, small water samples of 100μL were taken from the Hay Infusion Culture to create a serial dilution. The dilution progressed from 10^-2 of the water sample by increments of two to 10^-8. 100μL of each increment of the dilution was then added to an nutrient agar plate and and agar plate containing an antibiotic known as tetracycline.


2/11 Bacterial Colony Observations

From a final observation of our Hay Infusion we determined that there was more evaporation, as well as growth of a thicker film on top and more mold underneath the surface of the film. Additionally, a stronger swamp-like odor was present and the leaves in the infusion lost their color.


The tet-positive plates had orange yellow colonies that are fewer in number. The colonies were also convex and umbonate in shape. The tet-negative plates had smaller white colonies that were much greater in number, and less uniform in formation. These white colonies also appeared to be raised from the agar plate surface. Lastly, condensation had formed in these plates unlike their tet-positive counterparts. As an antibiotic, tetracycline is expected to help reduce competition for nutrients and other resources. It is composed of molecules that are purposed to either stop bacteria from growing or kill them off. Ultimately the plates with tetracycline produced less bacteria than the plates that did not contain tetracycline, supporting this hypothesis. Concerning Colony Morphology from each sample, both tet-positive and negative, the most recognizable bacteria had small coccus shaped formations. The white tet-positive slides in particular presented hundreds of very tiny coccus shaped bacteria. Overall, the bacteria cells found were so small and all coccus in shape the motility determined was overall immobile, none of the bacteria from the samples had any observed movement.

Lab 4: Transect 3 Plant Observations

5 Transect Plants Observed:

                       From the branch of a tree,

-dicot; netlike veins, spiky leaves

-total height: >25ft

-sample size: 4.5cm tall, 7.5cm wide

From the branch of a bush,


-total height: 3ft

-sample size: 4.5cm, 10.5cm

From a stem of yellow grass,

-fibrous seeds from a singular stem

-total height: 2.5ft

-sample size: 24cm, 5.5cm

From a branch of low-lying green plants which covered the ground,

-dicot, many leaves per branch, tiered, inconsistent size

-total height: 4in

-sample size: 8cm, 7.5cm

From a stem of the yellow grass growing alone next to the bush,

-many stems from the origin, many seeds growing on each branch, seeds seem very light especially compared to the other grass

-total height: 2ft

-sample size: 8cm, 12.5cm

Lab 5: Invertebrate and Vertebrates Burlese Funnel Observations:

Organism (phylum and class)

1.) Arthropoda Arachnida Acarina, Mite

2.) Arthropoda Arachnida Acarina, Big Brown Mite

3.) Arthropoda Insecta Psocoptera, Psocid A

4.) Arthropoda Arachnida Acarina, Mite C

5.) Unknown (unable to be identified)

Length in nm

1.) 19 nm

2.) 16 nm

3.) 17 nm

4.) 8 nm

5.) 26 nm

Quantity Found in Sample

1.) 1

2.) 2

3.) 1

4.) 1

5.) 2

General Organism Description

1.) BurleseOrganism1.png

2.) BurleseOrganism2.png

3.) BurleseOrganism3.png

4.) BurleseOrganism4.png

5.) BurleseUnknownOrganism.png


Lab 6: Embryology & Zebrafish Development

ZFishEx1.png ZFishEx2.png

Drug of Choice (Independent Variable): Ethanol

Dosages: 2 mL of 1% Ethanol Solution (24 wells total)


Control: 2 mL of un-manipulated water (24 wells total)

Method of Evaluation: heart rate (heart beats per minute), swim pattern (stable/normal vs. abnormal), and general growth development (head size, eye size, formations of mutation )

Data and Observations

Day 4: 2/22/16


Zebrafish Under Observation:

A1 -

B6 -


Zebrafish Under Observation:

B2 -

A5 -

Day 5: 2/23/16


Zebrafish Under Observation:

A1 - yolk sac: 14 mm, eye movement present - eyes are dark, yellow/green tint with dark spots and purple. fins constantly moving

B6 - yolk sac: 30 mm, mouth visible


Zebrafish Under Observation:

B2 - yolk: 15 mm, eye movement: stable, fin movement: constant

A5 - mouth: visible, fin movement: rapid (abnormal), yolk: 28 mm, eye movement: stable,

Day 6: 2/24/16

  • heart beats have finally become visible and able to be counted


Zebrafish Under Observation:

A1 - HR → 90 bpm, yolk: about 20 mm, mouth: visible, fin movement: stable, eye size: 10 mm, eye movement: constant

B6 - yolk sac: NONE, HR → 120 bpm, eye size: 11 mm, eye movement: stable, fin movement: N/A, mouth: visible


Zebrafish Under Observation:

B2 - unable to be observed, very active; kept swimming into wall. It was assumed to be because the fish was avoiding the light source from the microscope. Once light was lowered the fish was viewable for a brief period of time. However view was unclear and light was turned back on: the fish immediately swam away and continued to swim into wall.

A5 - mouth: visible, can see mouth eating shrimp brine that came with observation, fin movement: rapid/abnormal, body has dark appearance (darker than previous observation), eye movement: minimal, HR → N/A

Day 7: 2/25/16


Zebrafish Under Observation:

A1 - HR → 105 bpm, eye movement, size: 10 nm, fin movement present, mouth visible, light yellow-green, (brown-green spine), spots are black/dark brown, head size (mouth-fin): 30 nm,

B6 - HR → 128 bpm, very active in general, fin movement present, head size: 32 nm, eye size: 12 nm,


Zebrafish Under Observation:

B2 - HR → 52 bpm ? (abnormal - difficult to pick up), eye movement: rapid, left to right/no pattern, hard for fish to swim, darts forward in short distance spurts instead, fin movement: sporadic, lots of spots, darker yellow/green tint. more noticeable, head (appears bigger than body): 27 nm, eye: 10 nm

A5 - HR → 148 bpm, swimming sideways, rapid fin movement, minimal eye movement, transparent with slight yellow/green tint. not many spots, head: 40 nm, eye: 11 nm

Day 8: 2/26/16


Zebrafish Under Observation:

A1 - HR → around 100 bpm, Normal eye movement, eye size: 10 nm Active fin movement, Same color as yesterday [light yellow-green, (brown-green spine), spots are black/dark brown], head size: 30 nm

B6 - HR → around 120 bpm, Very active eyes and fins, Head size: 32 nm, Eye size: 12 nm,


Zebrafish Under Observation:

B2 - HR → Not determined, Sporadic swimming, eye movement, and fin movement, Noticeable dark green spots, Head size: 27nm, Eye size: 10nm,

A5 - HR → Around 150 bpm, Abnormal swimming, Normal fin movement, less eye movement, Some light green spots visible, Head size: 40nm, Eye size: 11nm

Day 9: 2/27/16

Weekend - No data/observations collected

Day 10: 2/28/16

Weekend - No data/observations collected

Day 11: 2/29/16


Zebrafish Under Observation:

  • fish bodies are no longer transparent enough to observe heart rates

A1 - dead. body is translucent, and in process of decomposition, dark colored bacteria and fungi swimming around, within and outside of fish carcass.

B6 - HR → N/A, swimming patterns: normal (healthy, not lacking in energy) darts to various positions spontaneously, fin movement: normal, head: 33 nm, eye:14 nm


Zebrafish Under Observation:

B2 - dead.

A5 - HR → N/A, swimming patterns: away from light, fine movement: bolts around, eye size: 10 nm, head size: 22 nm

Day 12: 3/1/16


Zebrafish Under Observation:

A1 - dead. no longer under observation

  • B6 - HR → N/A,

swimming patterns: normal (healthy, not lacking in energy) darts to various positions spontaneously, fin movement: normal, head: 33 nm eye:14 nm


Zebrafish Under Observation:

B2 - dead. no longer under observation

A5 - HR → N/A, fin movement: consistent/normal, swim pattern: fish actively moves away from light and other stimuli (pipette tip), total length: 140 nm,

  • head: 33 (vs.25) nm,
  • eye: 14 (vs.10) nm

Day 13: 3/2/16


Zebrafish Under Observation:

A1 - dead.

B6 - HR → N/A, Swim patterns: stable, stays in light, minimal bolting, smoother swimming. Reacts to stimuli (pipette tip), fin movement: stable, eye size: 8 nm, head size: 23 nm, total length: 125 nm


Zebrafish Under Observation:

B2 - dead.

A5 - dead.

Day 14: 3/3/16


Zebrafish Under Observation:

A1 - dead.

B6 - dead.

Total Remaining: 7

Brief, Immediate Conclusion: In comparison to Zebrafish with ethanol exposure, thrival rate of control group is much better.


Zebrafish Under Observation:

B2 - dead.

A5 - dead.

Brief, Immediate Conclusion: Ethanol Exposure does shorten life span.

Comparison of Preserved Zebrafish Embryo: