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Which of the following is the primary function of the respiratory system?

Transport of oxygen and nutrients to the body’s cells

Removal of waste products from the body’s cells

Maintenance of fluid balance in the body

Exchange of gases between the body and the environment

Which of the following is a characteristic of a eukaryotic cell?

It lacks a true nucleus.

It has a cell wall made of peptidoglycan.

It contains membrane-bound organelles.

It is always unicellular.

Which of the following is NOT a function of the cell membrane?

Regulating the passage of substances in and out of the cell

Providing structural support to the cell

Facilitating communication between cells

Carrying out cellular respiration

Which of the following is a function of the skeletal system?

Production of hormones

Protection of internal organs

Digestion of food

Transport of oxygen

Which of the following is a characteristic of eukaryotic cells?

They have a cell wall made of peptidoglycan

They have a nucleoid containing genetic material

They are typically smaller than prokaryotic cells

They have membrane-bound organelles

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