Structure and Functions of Living Organisms

Which best describes a multi-cellular organism?

• made up of one cell that carries out all life processes

• made up of many cells that carry out all life processes

• made up of one cell that carries out a single life process

• made up of many cells that all carry out a single life process

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Which best explains why bacteria is able to survive as a single-celled organism?

• A bacteria cell can produce its own water and food.

• A bacteria cell is tiny and hides easily from other cells.

• A bacteria cell can depend on other cells to meet its needs.

• A bacteria cell can complete all functions necessary for life.

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Which best compares single-celled and multi-celled organisms?

• Single-celled and multi-celled organisms both need energy to survive.

• Neither single-celled nor multi-celled organisms need energy to survive.

• Multi-celled organisms absorb energy to survive, while single-celled organisms release energy to survive.

• Single-celled organisms need more energy to survive, while multi-celled organisms need less energy to survive.

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Which best describes the relationship between the cardiovascular system and the muscular system?

• The cardiovascular system captures carbon dioxide from the air for muscle energy.

• The cardiovascular system produces red blood cells to bring oxygen to muscles.

• The cardiovascular system provides a framework for muscle movement.

• The cardiovascular system delivers oxygen for muscle energy.

Bone cells need nutrients. Which two systems get nutrients to bone cells?

• the digestive system and the circulatory system

• the circulatory system and the respiratory system

• the respiratory system and the skeletal system

• the skeletal system and the digestive system

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Which two body systems work together to provide the body with new red blood cells that carry oxygen?

• skeletal and digestive

• muscular and digestive

• skeletal and respiratory

• muscular and respiratory

How is the muscular system different from the digestive system?

• The muscular system moves the bones, while the digestive system provides the body with nutrients.

• The muscular system provides the body with nutrients, while the digestive system moves the bones.

• The muscular system provides oxygen to cells, while the digestive system protects the major organs.

• The muscular system protects the major organs, while the digestive system provides oxygen to cells.

Mrs. Smith is teaching her class about single-celled organisms. Which of the following would Mrs. Smith most likely tell her students?

• Single-celled organisms are unable to reproduce.

• Single-celled organisms are made up of many of a single type of cell.

• Single-celled organisms have one organ used to function for survival.

• Single-celled organisms are able to carry out all the functions to survive within themselves.

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A woman hiked 5 miles in one hour. By the end of the next hour, she had hiked a total of 8 miles. Which best describes the motion of the woman during the second hour?

• She was walking with a slower speed than in the first hour.

• She was walking with a faster speed than in the first hour.

• Her speed remained the same as in the first hour.

• Her motion stopped completely in the second hour.

• Car A moved faster than Car B.

• Car B moved faster than Car A.

• Car A began moving before Car B.

• Car B began moving before Car A.

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