Unit 1 Sci Method
What is a Scientific Question?
A question about the natural world used at the start of an investigation
What is the main purpose of taxonomy?
To organize biodiversity using universal rules.
To organize all life on earth in a structured way
What does the 10% rule explain?
Only 10% of energy transfers from one trophic level to the next.
What is made at the ribosome?
Proteins
Which structure forms the main body of a fungus underground?
Mycelium
What is a hypothesis?
An explanation that can be tested through experimentation
Which example of binomial nomenclature is correct?
A: CANIS LUPUS B: canis Lupus C: Canis lupus
C is correct
What is carrying capacity?
The maximum population an ecosystem can support.
Which molecules cross easily by simple diffusion?
Small nonpolar molecules
Which combination describes lichens?
Fungus & Algae
What is an independent variable? IV
What you change in an experiment
What does a branch point on a cladogram represent?
A shared common ancestor
Why does biodiversity (diversity of species) increase resilience?
More backup species = quicker recovery
Why are small cells more efficient?
Higher surface area to volume ratio. More cell surface to do the work.
Which asexual reproduction type do yeast use?
Budding
What is a dependent variable?
What you measure in an experiment.
Genetic evidence is the most reliable to classify organisms. True/False
True
Which is an aquatic impact of warming oceans?
Warmer water carries less oxygen.
What is osmosis?
The movement of water through a semipermeable membrane towards high solute concentration
Why is chitin necessary?
It adds flexibility and support to fungal cell walls so the mycelium can stretch out for miles without breaking.
Why do scientists repeat trials/experiements
To increase reliability and validity of data.
What is the broadest level of classification?
Domain
What is biomass?
Total atoms of living matter in an area
Why do nerve cells & muscle cells function differently even though they have the same DNA?
They express different genes that express different structure & function
What explains how the zombie fungus affects an infected ant?
Fungus invades the ant's body, controls the nervous system, and controls the ant's behavior to position it for advantageous spore release.