1.1 Cell Theory Flashcards

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1
Q

Cell Theory States That…

A

All living things are composed of cells

Cell is the smallest unit of life

Cella arise from pre- existing cells

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2
Q

Exceptions to the theory

A

Striated muscle cells

Giant Algea

Red Blood cell

Aseptate hyphae

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3
Q

Why are striated muscle cells exceptions

A

Composed of fused cells. Multi-nucleated

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4
Q

Why are Giant algae exceptions

A

Unicellular organisms. Very large (7cm)

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5
Q

Why are Aseptate hypae exceptions

A

Lack partioning. Continuous cytoplasm

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6
Q

Why are red blood cells exceptions

A

Lack nucleus

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7
Q

Functions of life

A

Metabolism
Response
Sensitivity
Homeostasis
Excretion
Nutrition
Growth

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8
Q

Surface area to volume ratio

A

Important in the limitation of cell size

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9
Q

Rate of metabolism

A

Function of volume

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10
Q

Rate of material exchange

A

Function of cell’s surface area

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11
Q

As a cell grows…

A

Volume increases faster than surface area

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12
Q

Cells would die if…

A

metabolic requirements exceed material

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13
Q

2 types of microscopes

A

Light and electron

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14
Q

Features of Light microscopes

A

View LIVING specimens in NATURAL color

Lower magnification and resolution

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15
Q

Features of electron microscope

A

Only view DEAD specimens in monochrome

Higher magnification and resolution

Show surface rendering

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16
Q

Definition of tissue

A

Group of different cells

17
Q

In multicellular organisms

A

Cells group together to form tissues

Tissues interact to form functional organs

Organs combine to form body systems

18
Q

Example of cellular organization

A

muscle cell –> cardiac tissue–> heart organ –> vascular system

19
Q

Emergent properties

A

Due to interactions of cells to produce new functions

20
Q

Example of emergent properties

A

Multicellular organism are able to complete functions that individual cells could not do alone