Nature of Science
A scientist changes only the amount of sunlight a plant receives while keeping water and soil the same. What variable is being changed?
What is the independent variable?
This system is used to name organisms using two words.
What is binomial nomenclature?
This organelle controls the activities of the cell.
What is the nucleus?
This body system is responsible for transporting oxygen and nutrients.
What is the circulatory system?
Organisms that make their own food are called this.
What are producers?
During an experiment, a student measures how tall plants grow after two weeks. What is being measured?
What is the dependent variable?
A mushroom belongs to this kingdom.
What is fungi?
Plant cells contain this organelle that captures energy from sunlight.
What is the chloroplast?
This organ pumps blood throughout the body.
What is the heart?
This type of organism breaks down dead matter.
What is a decomposer?
A scientist repeats an experiment three times and gets similar results each time. Why is repetition important?
What is to improve reliability and accuracy?
A bacterium that causes disease is known as this type of organism.
What is a pathogen?
According to cell theory, all living things are made of these.
What are cells?
Which two body systems work together to deliver oxygen to cells?
What are the respiratory and circulatory systems?
In a food chain, energy originally comes from this source.
What is the Sun?
A student says, “Plants grow faster because they like music.” Why is this statement not scientific?
What is it cannot be tested or measured scientifically?
An organism is multicellular, makes its own food, and has cell walls. Into which kingdom would it most likely be classified?
What is Plantae?
A student observes a cell with a cell wall and chloroplasts. What type of cell is it?
What is a plant cell?
A person has difficulty absorbing nutrients from food. Which body system is most directly affected?
What is the digestive system?
If all the grass in an ecosystem died, which organism would most likely be affected first?
What are primary consumers/herbivores?
In an investigation, one group of plants receives fertilizer while another does not. Why is the second group important?
What is it serves as the control group for comparison?
Two organisms have similar DNA and physical traits. What can most likely be concluded?
What is they are closely related evolutionarily?
Why are cells considered the basic unit of life?
What is because all living things are made of cells that perform life functions?
Why does the body need multiple organ systems working together?
What is to maintain homeostasis and keep the body functioning properly?
Why is less energy available at the top of a food pyramid?
What is because energy is lost as heat at each trophic level?