Lab Report Biology
Name: Siti Nur Amalina binti Mohamad Sukri
Class: M12E
Title:
Cell Respiration and Aquatic Animal
Aim:
To investigate the effect of a change in the temperature of water on the respiration rate of a goldfish.
Research question:
Does a change in temperature of water affect the respiration rate of a goldfish?
Introduction:
“The goldfish is a domesticated subspecies of a carp like fish called Carassius auratus. Goldfish are usually kept as pets, feeding on fish food, algae, plankton and other small aquatic life forms. Though goldfish are one of the easier species of aquatic life to care for, their respiratory systems are just as complex as any other fish.
Like other aquatic animals, goldfish have a one-way flow respiratory system. This means that their respiratory system pumps water through their gills and back into the water supply to absorb oxygen. Gills--which are the organs that most aquatic animals use to breathe--consist of complex filters that extract oxygen from the water.” There are many factors that can affect the respiration rate of an aquatic animal including temperature of water, oxygen levels, crowding, and pH levels. “When the water temperature is raised, the goldfish will experience a spike in metabolic activities. It will require more food and will produce more waste. In order to support the increased activity, the goldfish will require more oxygen. Rate of respiration will increase and the goldfish may even gasp for air at the water surface.”
Hypothesis: As the temperature of water decreases, respiration rate of the goldfish also decreases. This is because in lower temperature, water can hold more dissolved oxygen compared to water with higher temperature, thus rate of respiration becomes slower as enough oxygen are supplied.
Variables:
Variables | Method of controlling | Independent variable | Temperature of water | Dependent variable | Respiration rate of the goldfish | Controlled variable | 1. Type and number
Class: M12E
Title:
Cell Respiration and Aquatic Animal
Aim:
To investigate the effect of a change in the temperature of water on the respiration rate of a goldfish.
Research question:
Does a change in temperature of water affect the respiration rate of a goldfish?
Introduction:
“The goldfish is a domesticated subspecies of a carp like fish called Carassius auratus. Goldfish are usually kept as pets, feeding on fish food, algae, plankton and other small aquatic life forms. Though goldfish are one of the easier species of aquatic life to care for, their respiratory systems are just as complex as any other fish.
Like other aquatic animals, goldfish have a one-way flow respiratory system. This means that their respiratory system pumps water through their gills and back into the water supply to absorb oxygen. Gills--which are the organs that most aquatic animals use to breathe--consist of complex filters that extract oxygen from the water.” There are many factors that can affect the respiration rate of an aquatic animal including temperature of water, oxygen levels, crowding, and pH levels. “When the water temperature is raised, the goldfish will experience a spike in metabolic activities. It will require more food and will produce more waste. In order to support the increased activity, the goldfish will require more oxygen. Rate of respiration will increase and the goldfish may even gasp for air at the water surface.”
Hypothesis: As the temperature of water decreases, respiration rate of the goldfish also decreases. This is because in lower temperature, water can hold more dissolved oxygen compared to water with higher temperature, thus rate of respiration becomes slower as enough oxygen are supplied.
Variables:
Variables | Method of controlling | Independent variable | Temperature of water | Dependent variable | Respiration rate of the goldfish | Controlled variable | 1. Type and number