Anatomy Chapter 3 Cytology

______ are the structural and functional units of all living things.

• cells

• amino acids

• atoms

• elements

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The cell was first discovered and named by:

• Robert Hooke

• Robert Thompson

• David Hooke

• David Thompson

All new cells are formed from pre-existing cells.

• true

• false

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The _________ is the control center of the cell.

• nucleus

• mitochondria

• endoplasmic reticulum

• chromosome

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Which of the following is NOT a region/structure of the nucleus?

• nuclear envelope

• nucleolus

• chromatin

• golgi apparatus

The structure of the plasma membrane is referred to as:

• The Fluid Mosaic Model

• The Fluid Membrane Model

• The Flow Mosaic Model

• The Plasma Mosaic Model

The head of a phospholipid is __________ and __________.

• polar

• nonpolar

• hydrophilic

• hydrophobic

_______________ are impermeable junctions that encircle the cells and bind them together into leakproof sheets.

• Tight junctions

• Desmosomes

• Gap junctions

• Chemical molecules

The ___________ is the cellular material outside the nucleus and inside the plasma membrane.

• cytoplasm

• endoplasmic reticulum

• extracellular fluid

• interstitial fluid

Power house of the cell:

• mitochondria

• nucleus

• ribosome

• lysosome

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