IB Biology Cells & Cell Theory Flashcards
What are the characteristics and functions of a cell?
metabolism
reproduction
sensitivity
homeostasis
excretion
nutrition
growth
Cells need to exchange materials with the environment in order to produce the chemical energy required for survival via ______________.
metabolism
How do you calculate magnification?
image size divided by actual size
Light microscopes have a ______ magnification and resolution.
lower
What type of specimens can light microscopes see?
living specimens
What do electron microscopes use electromagnets to focus on?
electrons
Electron microscopes have a ______ magnification and resolution.
higher
What kind of specimens can electron microscopes view?
dead specimans
What do cells form together to create?
tissues
What do cells form to create?
organs
What do organs form together to create?
organ and body systems
What is the name of the property that functions in multicellular organisms?
emergent properties
What does self-renewal mean in unspecialized cells?
self-renewal means that unspecialized cells can continuously divide and replicate
What does potency mean in unspecialized cells?
potency means that unspecialized cells have the capacity to differentiate
What is a totipotent stem cell?
a stem cell that can form any cell type and extra-embryonic tissue
