In what way are the digestive and circulatory systems alike?

• Both protect organs in the body.

• Both control movement of the body.

• Both absorb gases or nutrients into the body.

• Both provide structural support for the body.

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A other rabbit has a litter. One of the babies is born with one long ear and one short ear. What most likely caused this one rabbit to be born with one short ear?

• The mother rabbit had previously lost an ear in an accident.

• The mother rabbit became sick before she gave birth.

• A mutation occurred during the development of this one rabbit.

• This one rabbit received less nutrition than the other rabbits before it was born.

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Which system in the human body includes the heart, blood, arteries and veins?

• cardiovascular

• digestive

• muscular

• respiratory

In what way are insects and humans similar?

• Both are single-celled organisms.

• Both are multi-cellular organisms.

• Both have cells that capture sunlight to make food.

• Both have cells that carry out all life functions.

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Which human body systems are located throughout most of the body?

• digestive and respiratory

• skeletal and respiratory

• nervous and circulatory

• respiratory and circulatory

Which do muscles interact with to accomplish locomotion in animals?

• heart

• lungs

• nerves

• skeleton

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Despite being very different, unicellular and multicellular organisms have many of the same functions. Which function is shared in both types of organisms?

• intake of nutrients for growth

• use of developed transport systems

• creation of specialized tissues

• all life processes occuring in all cells

Why do multicellular organisms have transport systems?

• Most have cells that are not able to exchange gases with the outside environment.

• Most have cells that are unable to grow and survive in their environment.

• Most have cells that need food from sources outside their environment.

• Most have cells that require more energy to survive than single-celled organisms.

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Which statement best describes a bacterial cell?

• It contains more than one cell

• It is a complete organism

• It is part of a larger organism

• It contains different kinds of cells

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

• Both have cells with specialized functions for each life process.

• Both perform all life processes within one cell.

• Both have a way to get rid of waste materials.

• Both are able to make food from sunlight.

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