Characteristics of life
The basic unit of life
What is the cell?
What is a possible explanation for an observation that can be tested by experiment?
What is a hypothesis?
The movement of particles from an area of high concentration to low concentration is called what?
What is diffusion?
What instrument do scientists use to view cells that are too small to see with the naked eye?
what is an electron microscope?
What is the only planet in our solar system that spins on its side?
The ability of an organism to keep internal conditions stable
In an experiment, what is the variable that the scientist changes?
What is the independent variable?
What type of membrane allows some substances to pass through but not others?
What is a selectively-permeable membrane?
What are organisms called that consist of only one cell?
What are unicellular organisms?
Which animal can sleep for up to three years without eating?
Snail
Which molecule carries genetic information in all living things and is found in the nucleus.
What is DNA?
What is the difference between accuracy and precision?
Accuracy is closeness to the true value; precision is closeness of repeated measurements to each other.
What is the process called when water moves across a membrane from high to low concentration?
What is osmosis?
What organelle produces energy during respiration and contains folded inner membranes called cristae?
What are mitochondria?
What element does the chemical symbol “Fe” stand for?
Iron
The process by which living things release energy from food.
What is respiration?
What is it called when neither the participant nor the researcher knows who is receiving the treatment in a medical study?
What is a double-blind test?
What type of transport requires energy to move substances against the concentration gradient?
What is active transport?
what are the stacks of membrane-bound sacs in the golgi apparatus that are not interconnected called?
What are cisternae?
Who painted the ceiling of the Sistine Chapel?
Michaelangelo
In multicellular organisms, what is the correct order of biological organisation from smallest to largest?
What is cell → tissue → organ → organ system → organism?
A balance always measures 5% lower than the true value. What kind of error is this?
What is a systematic error (systematic uncertainty)?
In osmosis experiments, what happens to a plant cell placed in a hypertonic solution?
What is plasmolysis (the cell shrinks as water leaves)?
What is the process called in which the nucleus of a somatic cell is transferred into an egg cell to produce a clone?
What is somatic cell nuclear transfer (SCNT)?
What’s the world’s largest ocean?
Pacific Ocean