Basics
Biology is the scientific study of this.
What is life (or living organisms)?
A tentative explanation for an observation.
What is a hypothesis?
Scientists use this tool to see cells.
What is a microscope?
This organelle is often called the "control center" because it contains DNA.
What is the nucleus?
Molecules move from high concentration to low concentration by this process.
What is diffusion?
The ability of living things to maintain stable internal conditions.
What is homeostasis?
A well-tested and widely accepted explanation for a set of observations.
What is a scientific theory?
This instrument provides more detail than a light microscope.
What is an electron microscope?
This organelle produces ATP, the cell's energy.
What is the mitochondrion (mitochondria)?
The movement of water across a membrane.
What is osmosis?
The process that explains the diversity of life on Earth.
What is evolution?
This type of reasoning uses specific observations to develop general principles.
What is inductive reasoning?
The smallest unit of life.
What is a cell?
These structures make proteins.
What are ribosomes?
This type of transport does not require energy.
What is passive transport?
The highest level of biological organization, including all ecosystems on Earth.
What is the biosphere?
Research conducted primarily to solve practical problems.
What is applied research?
Cell theory states that new cells come from existing _____.
What are cells?
Plants use this organelle to perform photosynthesis.
What is a chloroplast?
Cells use this molecule for energy during active transport.
What is ATP?
This diagram is used to show evolutionary relationships among organisms.
What is a phylogenetic tree?
Scientific results are typically published in these reviewed journal articles before acceptance by the scientific community.
What are peer-reviewed scientific papers?
These cells lack a true nucleus.
What are prokaryotic cells?
A plant cell wall is primarily made of _________.
What is cellulose?
The cell releases materials through this process.
What is exocytosis?