This document provides information about two biology lab experiments. The first investigates how abiotic factors like temperature affect the respiration rate of goldfish. It outlines the hypothesis, materials, procedures, observations and conclusions. The second experiment examines cellular respiration, the process by which living things obtain energy from food. It defines cellular respiration and explains how glucose and oxygen are used in mitochondria to produce energy, carbon dioxide and water in a cycle with photosynthesis.
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Science 7 notes glb lab 05 my gills beat for you
1. My Gills Beat for You
Investigating Effects of Abiotic Factors
2. Key Objectives:
The student will:
– Investigate and understand
the effects abiotic factors can
have on an organism
3. Key Objectives:
The student will:
– Investigate and understand
what a limiting factor is and
how it effects an organism’s
survival
4. Key Terms
E.D.D.
Hypotheses
Independent
variable
Dependent
variable
Constant
Control
Repeated Trials
Limiting Factors
Gills
Chemical Bond
5. E.D.D
The Experimental Design
Diagram
– A tool used by scientists to
formulate or design an
experiment
6. E.D.D
Includes but is not limited to use of the
following organizational terms:
Hypothesis, Independent Variable,
Dependant Variable, Control,
Constant, Repeated Trials
11. Constant
Everything that never changes
in an experiment. These
remain the same or “constant”
between trials
12. Control
An experiment set aside with
nothing manipulated.
– Its purpose is to have something
to compare to an experiment’s
results
13. Repeated Trials
Each successive test
performed during an
experiment.
– The purpose of repeated trials is
to eliminate experimental error
and to confirm data.
14. Limiting Factors
Anything that would cause a
population not to thrive, not to
reproduce or to decrease in
size
15. Gills
In fish and other aquatic
organisms they are a
respiratory organ that extracts
dissolved oxygen from water
through the process of
diffusion
39. Essential Learnings
Scientists are always using
experiments to find answers to
questions about the world
around us
Experimentation needs to be
consistent for research to be
accurate
40. Essential Learnings
First of all a problem must be
identified to solve before any
experiment can be performed
Then an experiment must be
designed
41. Essential Learnings
The Experimental Design
Diagram or E.D.D. is a
tool/model used by scientists to
attempt to standardize the way
experiments are performed
42. Essential Learnings
When there is consistency in
experiments, scientists can better
verify conclusions and make more
accurate predictions and
conclusions as well as repeat
experiments for ACCURACY
43. Essential Learnings
To ensure consistency and
accuracy in experiments many parts
of the experiment must remain
constant or the same during each
repeated trial
44. Essential Learnings
When the scientist predicts an
outcome of the experiment he
is creating a hypothesis
45. Essential Learnings
He tests the hypothesis by
manipulating only one part of
the experiment which is called
the independent variable
46. Essential Learnings
The Scientist compares the results
or the Dependent Variable to a
control to identify any changes
48. Key Objectives:
The student will:
– Investigate and understand the
physical and chemical process of
cellular respiration and its
importance to plant life
49. Key Objectives:
The student will:
– Use words or chemical equations
to compare and contrast the
process of photosynthesis and
respiration in terms of raw
materials required, products
produced and cellular organelles
involved
50. Cellular Respsiration
The process in which all living
things including plants obtain
energy stored in food
51. Essential Leranings
All livings turn food into energy
through a process called
cellular respiration
52. Essential Leranings
Cellular respiration is a
chemical process that occurs in
each a cell in an organelle
called the mitochondria
53. Essential Leranings
In the mitochondria, glucose
molecules are combined with
Oxygen to release energy and
produce Carbon Dioxide (CO2)
and Water (H2O)
55. Essential Leranings
During respiration Oxygen is
used and Carbon Dioxide is
given off to the environment
where it becomes available for
producers to use again
56. Essential Leranings
Matter, in this case Oxygen and
Carbon Dioxide is recycled
This is known as The Oxygen
Carbon Dioxide Cycle
– Part of the Carbon Cycle