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29 terms

science - cells

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cells
all organismms or living things are made of ___.
splits or divides
every cell in every living thing comes from another cell that ___________.
unicellular
A single-celled organism that can carry on all its life processes is called_______.
multicellular
Organisms made up of more than one cell are called _________.
1 billion
Scientists estimate that there are _______ kinds of unicellular organisms
organelles
Both plant and animal cells perform life processes by using __________.
cell membrane
All cells are surrounded by a ____ _____ that controls the materials that move in and out of the cell.
cytoplasm
The region between the cell membrane and the nucleus is filed with ______________.
nuclear
The cell's control center is called the __________.
mitochondria
The tiny power plants in the cell where food is broken down and energy is released are called _______________.
vacuole
A structure in a cell used for storage of water, food, and wated is called _______________
cell wall
Plant cells have a _______, a rigid structure that serves as an outer covering.
cholorplast
A green structure called a ________ uses the energy from the Sun to produce food for the plant.
microscope
what is needed to view cells?
electorn
In the 1940s, ______ microscopes were created that were 40,000 times more powerful than previous microscopes.
cells
All living things are made of ________.
five
Living things carry out __________basic life functions.
reproduce
Living things must be able to _____ or make more of their own kind.
respond
Organisms can react or ____________ to their environment.
tissue
A group of similar cells called a ______ work together to do the same job in an organism.
jobs
Different kinds of tissues can perform different _____ in an organism.
plants
The flesh of fruits is an example of tissue that can be found in many ____.
organ
Different tissues working together form a ______.
organ system
When different organs work togther they form a ____ ___.
root system
The roots are the main organ in the ___ ____ of plants.
stems and leaves
What makes up the shoot system in plants.
digestive
In the salamander, the organ system that breaks down food for the energy is the ______ system.
bones, muscles, and brain
What are the parts of the organ systsems that control movement and responses?
heart
The ____ is the part of the circulatory system which transports blood and other materials