Biology Experiments by Zoey Bu

Mung bean PRE data

zb28039 — 2024-08-23 18:26:44 UTC

Testable Question:

Does the amount of water affect the number of seeds germinating in 72 hrs?

Hypothesis:

null- The amount does NOT affect numbers beans

AH- amount of water DOES affect number of beans

Procedure:

Place filter paper in dishes
Measure and add 5, 10, 15, 20 ml of water in 4 different dishes
Place 10 beans evenly spaced into dishes
Put on window sill for 72 hrs
Record results

Mung bean: DATA TABLE

zb28039 — 2024-08-26 18:31:52 UTC

Mung Bean GRAPH W/ ERROR BARS

zb28039 — 2024-08-26 18:32:28 UTC

Mung Bean POST data: CER

zb28039 — 2024-08-26 18:37:29 UTC

The amount of water does affect the number of seeds germinated in 72 hours. Evidence to support this claim comes from the data table which states that 5 ml of water germinated 2 seeds, 10 ml of water germinated 8 seeds, 15 ml of water germinated 9 seeds, and 20 ml of water germinated 7 seeds. This proves that the amount of water affects the number of seeds germinated because water helps expand the seed, delivers dissloved oxegen, and activates enzymes for resperation which provides energy fro growth to the seeds. So having an appropriate amount of water helps the seeds grow.

Isopods PRE data: (water VS vinegar)

zb28039 — 2024-08-29 18:25:59 UTC

Testable question:

Does PH affect the number of isopods in the choice chamber in 10 minutes?

Hypothesis:

Null: PH does not affect the number of isopods in the choice chamber in 10 minutes

AH: PH does affect the number of isopods in the choice chamber in 10 minutes

Procedure:

place filter paper in dishes
Put a few drops of water in one side
Put a new drops of vinegar in the other side
Place 5 isopods in each side
record results every minute for 10 minutes

Isopods PRE data: (wet VS dry)

zb28039 — 2024-08-29 18:34:20 UTC

Testable question:

Does H2O affect the number of isopods/pill bugs in choice container in 10 minutes?

Hypothesis:

Nul: H2O does not affect the of isopods in choice container in 10 minutes

AH: H2O does affect the of isopods in choice container in 10 minutes

Procedure:

place filter paper in choice container
put water on one side & leave one dry
place 5 isopods in each side
record every minute for 10 minutes

Isopods GRAPH W/ ERROR BARS: (wet VS dry)

zb28039 — 2024-08-29 18:36:15 UTC

Isopods DATA TABLE: (wet VS dry)

zb28039 — 2024-08-29 18:38:29 UTC

Isopods DATA TABLE 1: (water Vs vinegar)

zb28039 — 2024-08-30 18:10:48 UTC

Isopods DATA TABLE 2: (water VS vinegar)

zb28039 — 2024-08-30 18:11:19 UTC

Isopods LINE GRAPH: (water VS vinegar)

zb28039 — 2024-08-30 18:13:35 UTC

Isopods BAR GRAPH W/ ERROR BARS: (water VS vinegar)

zb28039 — 2024-08-30 18:14:04 UTC

Isopods POST data (wet VS dry): CER

zb28039 — 2024-08-30 18:24:23 UTC

The amount of H2O does not affect the number of isopods in the choice container in 10 minutes. Evidence to support this claim comes from the data table which shows that there is no difference between the variables.

Isopods POST data (water VS vinegar): CER

zb28039 — 2024-08-30 18:27:01 UTC

PH does affect the number of isopods in the choice container in 10 minutes. Evidence from the data table shows that almost all of the isopods chose to stay in the side with water for the whole 10 minutes. This proves that PH does affect the number of isopods in the choice container in 10 minutes because isopods live in damp and humid enviornments which do not contain vinegar, so when the isopods came into contact with vinegar, they posed it as a threat and stayed away from it.

DW pre data:

zb28039 — 2024-09-18 18:49:06 UTC

Testable question: Does the amount of nutrience affect the growth of duckweed?

Hypotheses:

NH: The amount of nutrience does not affect the growth of DW

AH: The amount of nutrience does affect the growth of DW

Procedure:

fill 4 cups with 125ml of water
place 10 dw in each cup
add 5, 10, 15, and 20 drops of nurience in each cup
record data for 9 days

Community Park PRE data:

zb28039 — 2024-09-26 18:39:10 UTC

TQ:

How does the proximity to water affect the biodiversity of insects?

HYP:

N- The proximity does not affect the biodiversity

AL- The proximity does affect the biodiversity

Procedure:

set up trap in 2 locations
count richness, abundance, and callculate S.D.I the following day

DW Data Table:

zb28039 — 2024-09-27 17:37:36 UTC

DW Line Graph:

zb28039 — 2024-09-27 17:38:31 UTC

DW CER:

zb28039 — 2024-09-30 17:56:29 UTC

The amount of nutrient increases the growth of duckweed because it contains important nutrients. The chart shows that the cup that had 10 drops of nutrience, went from 10, 14, 15, 14, then 12 during the duration of experiement. The cup with 15 drops went from 10, 12, 15, then 13. And the cup with 20 drops went from 10, 11, 12, 15, then 18. The cup with 5 drops is considered an outlier because it had inconsistent data. This evidence proves the claim that the amount of nutrient increases the growth of duckweed because it contains important nutrients like nitrates and phosphates that help the plant grow and reproduce.

Biodiversity POST data: Location, richness, abundance

zb28039 — 2024-10-02 17:55:24 UTC

Biodiversity POST data: Simpsons diversity index

zb28039 — 2024-10-02 17:57:09 UTC

Biodiversity POST data: Bar graph

zb28039 — 2024-10-02 17:57:36 UTC

BD CER:

zb28039 — 2024-10-02 17:59:38 UTC

The proximity to water increases the biodiversity of insects because insects are hatched in the water. For example the hill traps, which were the furthest away from the water, had the least amount of biodiversity because the richness was 6, abundance was 34, and the sdi was 0.45. The traps set up in the areas closest to the water, which were the marsh and the bridge had the largest biodiversity because the richnesses were 11 and 11, the abundance was 23 and 34, and the sdi's were 0.88 and 0.76. This proves that the proximity to water increases the biodiversity of insects because insects are hatched in the water because most of the biodiversity is near the water because they hatch there.

Spinach PRE data

zb28039 — 2024-10-25 18:23:16 UTC

TQ:

Does light affect the CO2 levels in a container w/ spinach leaves?

Hypotheses:

N: light does not affect the CO2 levels in a container w/ spinach leaves

A: light does affect the CO2 levels in a container w/ spinach leaves

Constants:

# of leaves

container

temp

time (5 minutes)

spinach data table

zb28039 — 2024-10-25 18:26:20 UTC

spinach leaves in the DARK

zb28039 — 2024-10-25 18:27:05 UTC

spinach leaves in the LIGHT

zb28039 — 2024-10-25 18:27:22 UTC

Spinach CER

zb28039 — 2024-10-25 18:41:17 UTC

Light affects the CO2 levels in a container w/ spinach leaves because of the cycle of photosynthesis and respiration. In the light data table, the spinach leaves had an average change was -400 of CO2. And in the dark data table, the average change in CO2 was around 750. This shows that light affects the CO2 levels in a container with spinach leaves because of the cycle of photosynthesis and respiration because in the light container both photosynthesis and respiration are taking and producing CO2. While in the dark container, only respiration is happening, so only CO2 is being produced which increases the amount of CO2.

Mung Bean CO2 lab PRE data

zb28039 — 2024-10-31 18:03:46 UTC

TQ:

Does germination affect the amount of CO2 produced?

Hypotheses:

N: Germination does not affect the amount of CO2 produced

A: Germination does affect the amount of CO2 produced

Constants:

container

# of seeds

mung beans dormant

mung beans germinated

MB CO2 lab data table

zb28039 — 2024-10-31 18:24:58 UTC

Mung Bean CO2 CER

zb28039 — 2024-10-31 18:40:00 UTC

Germination does affect the amount of CO2 produced because of cellular respiration. The evidence showed that the change in germinating seeds was +115 and the change in the dormant seeds was only +4. This shows that germination does affect the amount of CO2 produced because of cellular respiration because the germinated seeds are producing CO2, while in the dormant seeds are not producing CO2 because cells are actively working while the dormant cells are not.

PRE Potato lab

zb28039 — 2024-11-26 19:12:33 UTC

TQ:

Does the concentration of sugar water affect the % of mass change in potato

Hypotheses:

N- The concentration of sugar water does not affect the % of mass change in potato

AL- The concentration of sugar water does affect the % of mass change in potato

Constants:

-3 potato cores

-25 ml of solution

-24 hour run

POST Potato lab

zb28039 — 2024-11-26 19:12:47 UTC

CER:

The concentration of sugar water does affect the % mass change in potatoes because of osmosis. For example, the chart states that in 0.2 sucrose concentration, the change was 6.2. Another example is .4, which had a % change was -16.7. This proves that the concentration of sugar water does affect the % mass change in potatoes because of osmosis. Osmosis is the process by which the molecules of a solvent pass from a solution of highconcentration to a solution of low concentration through a semi-permeable membrane. In concentrations 0.2 and below, a hypotonic process happens that causes the cells to expand, increasing their mass. While in concentrations above 0.2, a hypertonic process happens where the cells shrivel up, causing a decrease in mass.

Potato Lab Chart

zb28039 — 2024-11-26 19:14:07 UTC

Potato Lab Graph

zb28039 — 2024-11-26 19:14:29 UTC

zb28039 — 2024-12-13 19:37:50 UTC