Life and Cell intro Quiz Flashcards

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1
Q

Homeostasis

A

the ability to maintain constant internal conditions-37C

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2
Q

Stimulus Response

A

anything in the environment that causes an organism to react

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3
Q

Sexual reproduction

A

process of making offspring requiring 2 organisms to mate

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4
Q

Asexual reproduction

A

process of making offspring where 1 organism splits into 2

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5
Q

Adaptation

A

a trait that allows an organism to better survive in its environment

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6
Q

Energy

A

ability to get work done

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7
Q

Producer

A

an organism that makes its own food like plants using photosynthesis

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8
Q

Consumer

A

organism that obtains food by eating producers or other life forms

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9
Q

Development

A

progressive changes in size, shape, and function during the life of an organism

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10
Q

Excretion

A

process of removing waste from your body (urination, exhalation)

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11
Q

unicellular

A

a single celled life form (bacteria)

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12
Q

multicellular

A

many celled

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13
Q

prokaryote

A

smaller & simpler, no nucleus, or organelles, ex. bacteria

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14
Q

eukaryote

A

larger & more complex, have nucleus, have many types of organelles, 2 types: animal & plant

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15
Q

compound light microscope

A

Common lab microscope, 3000x, light, 2D, sees living cells

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16
Q

stereo microscope

A

dissecting microscope, 500x, light, 3D, magnifies surfaces of living things

17
Q

TEM

A

Transmission EM, 300,000x , electrons, 2D, interior of cells, Kills!

18
Q

SEM

A

Scanning EM, 100,000x , electrons, 3D, surfaces of cells, Kills!

19
Q

limit of resolution

A

the point at which the ability to distinguish between objects blurs/is lost, sharpness. Problem with light microscopes

20
Q

magnification

A

the action or process of magnifying something or being magnified, esp. visually.

21
Q

cell culturing

A

growing cells outside of the body in a petri dish

22
Q

micrometer

A

one thousandths of a millimeter.

a blood cell in 10 µm in size

23
Q

microtome

A

tool that slices specimens for microscope viewing

24
Q

centrifuge

A

a tool used separate material by spinning them

25
Q

Cell theory

A

All life is made of cells
A cell is basic unit of life
All cells come from cells

26
Q

Robert Hooke

A

first to observe “small chambers” in cork and call them cells.

27
Q

Anton von Leeuwenhoek

A

first to observe microorganisms

28
Q

Matthias Schleiden

A

discovered that plants are made of cells

29
Q

Theodor Schwann

A

discovered that animals are made of cells.

30
Q

Rudolf Virchow

A

all cells come from cells