How is it possible for single-celled organisms to survive?

They have all their needs met within one cell.

Which systems work together to bring oxygen into the body and deliver it to cells?

respiratory and circulatory system

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Human Body Systems

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5.L.1.2 Compare the major systems of the human body in terms of their functions necessary for life.

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Questions 15

Answers

1
The mouth, stomach and the intestines are all part of what body system?
digestive system
skeletal system
nervous system
circulatory system
2
How is it possible for single-celled organisms to survive?
They depend on other cells to get food, water & resources.
They have all their needs met within one cell.
They have adapted to only live in certain environments.
They are small and can easily avoid predators.
3
Which statement correctly identifies a part of the circulatory system and its function?
The muscles move the body
The lungs take in oxygen
The heart pumps the blood
The brain makes decisions
4
The esophagus, stomach and intestines are all part of which body system?
nervous system
digestive system
skeletal system
circulatory system
5
What two systems work simultaneously to move our bodies?
muscular and skeletal system
respiratory and skeletal system
muscular and circulatory system
circulatory and skeletal system
6
Which systems work together to bring oxygen into the body and deliver it to cells?
muscular and skeletal system
nervous and digestive system
respiratory and circulatory system
nervous and respiratory system
7
Which system gives the body structure and support?
digestive system
nervous system
skeletal system
muscular system
8
The esophagus is part of which system?
circulatory system
digestive system
skeletal system
nervous system
9
Which system transmits messages to and from the brain and spinal cord?
skeletal system
circulatory system
nervous system
digestive system
10
Which body system controls all other systems of the body?
nervous system
circulatory system
skeletal system
muscular system
11
Which of the following is part of the respiratory system?
the esophagus
the trachea
small intestine
sensory nerves
12
Which system protects the cardiovascular system?
digestive system
respiratory system
skeletal system
nervous system
13
Which of these is a structure that is present in all organisms?
brain
tissue
cell
stomach
14
What two systems work together to move food through the body?
digestive and nervous system
circulatory and nervous system
digestive and muscular system
circulatory and respiratory system
15
Which of the following is part of the nervous system?
the esophagus
a muscle
the heart
the brain

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