Science
True or False: There is only one correct way to design a scientific experiment.
False
What are the 3 domains?
Archaea, Bacteria, Eukarya
The variable a scientist deliberately changes is called what?
Independent variable
What is the smallest unit of life?
A cell
One deer in a field represents this level.
Organism
A sour taste is an example of this type of observation.
Qualitative observation
What distinguishes a eukaryote from a prokaryote?
A eukaryote has a nucleus and a prokaryote does not
Which group receives “normal” conditions in an experiment?
The control group
Heterotroph
All the deer in a field represent this level.
Population
It rained or someone watered plants. What type of statements are these?
Inferences based on observations
What is the name of the diagram scientists use to illustrate relationships between organisms (does not include ancestral relationships)?
Cladogram
In an experiment, the independent variable is types of drinks runners drink before an experiment, and the dependent variable is how fast the runners run. Write a hypothesis.
If the runners drink vitamin water before the race, then they will have faster running times.
A rabbit’s body temperature stays constant despite the cold. What characteristic of life does this demonstrate?
Homeostasis
If deer, squirrels, and birds interact in the same forest, what level is formed?
Community
A student measures a desk length three times as 1.50 m, 1.51 m, and 1.50 m. The actual length is 1.30 m. Describe the data in terms of precision and accuracy.
The data are precise but not accurate.
What is the proper way to write the genus and species of an organism (3 requirements)?
Genus written before species, genus is capitalized, and both genus and species is italicized.
A poorly designed experiment has two independent variables. Explain why this is a problem.
You cannot know which variable caused the change in the dependent variable.
1 parent produces genetically identical offspring
What’s the difference between an ecosystem and a community?
An ecosystem includes abiotic factors, while a community only includes living things.
In an experiment, I set up three pots, each containing ten bean seeds planted in the same type of soil, and placed them in the same window. Each day for a week, one pot gets 2mL of water, the second pot gets 1 mL of water, and the third pot doesn't get any water. What are controlled variables?
same pots, same number of seeds, same type of soil, and same window
List the taxonomic levels in order from most broad to most specific.
In an experiment testing whether caffeine affects memory recall, name the IV, DV, and one possible constant.
IV = caffeine amount; DV = memory recall score; constant = same age group or same test given.
Name the 7 characteristics of life.
Cells, genetic material, growth, reproduction, response to stimuli, homeostasis, and metabolism.
Put these in order from smallest to largest: population, biome, organism, ecosystem, biosphere, community.
Organism → Population → Community → Ecosystem → Biome → Biosphere.