Why do multicellular organisms need transport systems?

Most have cells unable to exchange gases with outside.

Which is a function of the cardiovascular system?

to transport gases throughout the body

Which helps scientists decide whether an organism is unicellular or multicellular?

how many types of cells are in the organism

Which characteristic do single-celled organisms and multicellular organisms have in common?

Both have a way to get rid of waste materials.

Which example best shows structures that make up the digestive system?

esophagus, stomach, and intestines

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Human Body Systems 5th Grade Shiloh

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Answers

1
Why do multicellular organisms need transport systems?
Most have cells requiring more energy to survive than single
Most have cells that need food from outside sources.
Most have cells unable to exchange gases with outside.
Most have cells unable to grow and survive in theenvironment
2
Which statement best describes a bacterial cell?
It contains more than one cell.
It is a complete organism.
It contains different kind of cells.
It is part of a larger organism.
3
Which system of the human body provides protection to most major organs?
muscular
respiratory
skeletal
circulatory
4
Which is an example of a single celled organism?
insect
worm
fish
amoeba
5
Which body system processes foods into useable sources of energy?
digestive
circulatory
skeletal
nervous
6
Which is a function of the cardiovascular system?
to eliminate waste from the body
to provide structural support for the body
to move water throughout the body
to transport gases throughout the body
7
Which helps scientists decide whether an organism is unicellular or multicellular?
what the organism eats
size of cells
how many types of cells are in the organism
how fast the organism grows
8
Which body system sends electrical signals to all other body systems?
circulatory
muscular
nervous
digestive
9
Which characteristic do single-celled organisms and multicellular organisms have in common?
Both are able to make food from sunlight.
Both have cells with specialized functions for each process
Both have a way to get rid of waste materials.
Both perform all life processes within one cell.
10
Which example best shows structures that make up the digestive system?
brain, spinal cord, nerves
esophagus, stomach, and intestines
heart, blood, vessels
nose, trachea, lungs

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