The Cell
What part of an animal or plant cell is like the human brain?
the nucleus
A group of animals all of the same species living together in one area is called a _____________________________.
population
The smallest particle of matter, that an element is made of, is called an _____________.
atom
What part of an animal or plant cell is the powerhouse of the cell?
the mitochondria
Groups of different animal populations all living in one area together is called a _____________________.
community
Atoms are made of _____ particles.
3
The parts of animal and plant cells that are like human organs are called ___________________.
cell organelles
All of the living organisms and nonliving substances in an area together make up an __________________.
ecosystem
The three particles that make up an atom are :
____________________
____________________
____________________
protons, neutrons and electrons
Only a plant cell contains _________________ and a ____________ _____________.
chloroplasts, cell wall
The living factors in an ecosystem are called the ______________ factors.
biotic
What are the charges of the three particles in an atom?
protons (+)
neutrons (0)
electrons (-)
The outermost part of an animal cell is its _________________ _______________________.
cell membrane
The nonliving factors in an ecosystem are called the ______________ factors.
abiotic
List the particles of an atom from heaviest to lightest.
neutrons, protons and electrons