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Anatomy unit 1 Test > Chp 3 Biology Of The Cell > Flashcards

Chp 3 Biology Of The Cell Flashcards

0
Q

What are 4 general functions of cells

A

Maintain shape of cell

Obtain nutrients

Dispose of wastes

Cell division (not all cells)

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1
Q

Cells are know as

A

The structural and functional units of he body

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2
Q

Plasma membrane

A

Forms the outer limiting barrier

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3
Q

Nucleus

A

Largest structure in the cell

Contains DNA

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4
Q

Cytoplasm

A

Cellular contents between plasma membrane and nucleus

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5
Q

Inclusions

A

Large and diverse group of molecules

Typically not bound by a membrane

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6
Q

What are some examples of membrane bound organelles

A

Lysosomes

Endoplasmic reticulum

Mitochondria

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7
Q

What are some examples of non-membrane bound organelles

A

Ribosomes

Cytoskeleton

Centrosome

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8
Q

What are the two functions of proteasomes

A

Protein digestion

Quality assurance

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9
Q

Proteasomes:

Quality assurance function is?

A

Controls the quality of exported cell proteins

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10
Q

Flagella

A

Similar to cilia in structure

Longer and usually appear alone

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11
Q

Microvilli

A

Microscopic extensions from surface of plasma membrane

Supported by microfilaments

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12
Q

Where can you find micro villi?

And what’s their purpose?

A

In cells of small intestine

Increase surface area to better absorb nutrients

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13
Q

What structure of the cells external surface is found in parts of the respiratory tract, and participates in moving mucus toward the throat?

A

Cilia

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14
Q

Tight junction

A

Completely attach cells to neighbors

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15
Q

Desmosomes

A

Hold cells together at a single point

16
Q

Gap junction

A

Provide direct passageway for substances to travel between cells

17
Q

What type of membrane junction provides a direct passage for substances to travel between neighboring cells?

A

Gap junctions

18
Q

What are the three membrane junctions?

A

Gap junctions

Desmosomes

Tight junctions

19
Q

Glycocalyx, what’s its purpose?

A

Provides highly specific biological markers by which approaching cells recognize each other.

20
Q

What is glycocalyx

A

The fuzzy, sticky, carbohydrate-rich area at the cell surface.

21
Q

Most cell communication occurs through

A

Ligands

22
Q

Ligands

A

–Molecules released from one cell

–Bind to receptor within plasma membrane of another cell

23
Q

What Is DNA called in its loose form when not dividing?

A

Chromatin

24
Q

What is DNA called in its tightly packed form, when dividing?

A

Chromosome

25
Q

What are the four phases of mitosis?

A

Prophase

Metaphase

Anaphase

Telophase

26
Q

Prophase

A

Puffy

27
Q

Metaphase

A

Middle

28
Q

Anaphase

A

Apart

29
Q

Telophase

A

Two

Anatomy unit 1 Test (3 decks)

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