21
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Who first recognized the cell as the universal unit of life?
A
VirchowB
van LeeuwenhoekC
HookeD
Schleiden and Schwann22
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Consider this animal cell.Which organelles are labeled G?
A
centriolesB
lysosomesC
ribosomesD
mitochondria23
What role do nerve cells play in the human body?
A
They allow the body to react to stimuli.B
They regulate the exchange of chemicals.C
They carry oxygen throughout the body.D
They help the organs move.24
Which statement describes the ability of the cell membrane to allow various substance to move through it?
A
The cell membrane is selectively permeable.B
The cell membrane is composed of lipids and phosphates.C
The cell membrane is both hydrophilic and hydrophobic.D
The cell membrane is a bilayer structure.25
Which of these definitions have been paired with the correct type of cell?
A
Blood cells are elongated cells that can contract.B
Neurons are cells that conduct electrical impulses.C
Epithelial cells are cells that carry oxygen through the body.D
Muscle cells are components of blood.Did you find these answers helpful?
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