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Biology > Biology (2.1-2.2) > Flashcards

Biology (2.1-2.2) Flashcards

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1
Q

Who first observed cells?

A

Robert Hooke

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2
Q

Cell Theory?

A

All living things are made of 1+ cells.
- Cell = smallest unit of life.
- All new cells come from pre-existing cells.

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3
Q

Compound Light Microscope

A

magnification x1000, can
view live specimens.

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4
Q

Electron Microscope

A

magnification x500,000, cannot
view live specimens.

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5
Q

Transmission Electron Microscope (TEM)

A

1D

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6
Q

Scanning Electron Microscope (SEM)

A

3D

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7
Q

Parts of ALL cells

A

Cell Membrane, Cytoplasm, Genetic Material, Ribosomes

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8
Q

Hydrophillic (water loving)

A

Head

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9
Q

Hydrophobic (water fearing)

A

Tail

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10
Q

Cell Membrane

A

Creates a protective barrier

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11
Q

Cytoplasm

A

jello-like fluid inside cells.

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12
Q

Genetic Material

A

Stores and transmits info

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13
Q

Ribosomes

A

builds PROTEINS;
follows directions from DNA/RNA.

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14
Q

Prokaryotes

A

No Nucleus and No membrane bound organelles. (Smaller)

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15
Q

Eukaryotes

A

Nucleus and Membrane bound organelles. (Larger)

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16
Q

Phosphilipid Bilayer

A

creates barrier, maintains
homeostasis.

17
Q

Selectively permeable

A

only allows certain things to
enter & exit

18
Q

Homeostatis

A

maintains a stable internal environment,
when external changes.

19
Q

Cholesterol

A

can be found between the phospholipids in
the membrane to stabilize and provide flexibility. Only
in animal cells.

20
Q

Membrane Proteins

A

Transport Proteins
Receptor Proteins
Anchor Proteins

21
Q

Passive Transport

A

No Energy/ ATP required

22
Q

Diffusion

A

Movement from HIGH to LOW concentration

23
Q

Osmosis

A

The process of diffusion with WATER

24
Q

Active Transport

A

Energy/ATP Required LOW TO HIGH

25
Q

Endocytosis

A

cell surrounds substance outside and
encloses it -> TAKES IN

26
Q

Exocytosis

A

secretion of materials from cell ->
SENDS OUT

Biology (7 decks)

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