Cells n Stuff Flashcards

1
Q

Who first coined the term cells?

A

Robert Hooke

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2
Q

What year did Robert Hooke take a peek at some corks and find cells?

A

1665

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3
Q

Cell Theory

A
  1. Everything living is made up of cells
  2. All past cells come form other living cells
  3. A cell is the most basic unit of life
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4
Q

The cell membrane contains:

A

Lipids, proteins, and phospholipids

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5
Q

A phospholipid is:

A

A lipid that contains phosphorus

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6
Q

The three functions of a cell membrane:

A
  1. Separating the cell from its surrounding
  2. Allowing nutrients in and waste out
  3. Homeostasis
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7
Q

Proteins and lipids in a cell membrane:

A

Control the movement in/out of the cell

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8
Q

Osmosis

A

The diffusion of water through a semi-permeable membrane

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9
Q

Three types of passive transport:

A

Diffusion, facilitated diffusion, and osmosis

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10
Q

Diffusion

A

The movement of small particles across a semi-permeable membrane until equilibrium is reached

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11
Q

Facilitated Diffusion

A

The movement of large particles across a semi-permeable membrane until equilibrium is reached

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12
Q

Nucleolus

A

Produces ribosomes

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13
Q

Golgi Apparatus

A

Packages/labels proteins

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14
Q

Vesicle

A

Finalizes assembly and transports proteins (the random one)

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15
Q

Vacuole

A

Stores excess nutrients

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16
Q

Another word for channels:

A

Pores

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17
Q

Hypertonic Solutions

A

HIGH level of solute
Water flows OUT
Animal cells will SHRIVEL

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18
Q

Hypotonic Solution

A

LOW level of solute
Water flows IN
Animal cells will SWELL

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19
Q

Isotonic Solution

A

EVEN level of solute
Water flows IN and OUT at same rate
Animal cells are HAPPY

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20
Q

Endocytosis

A

The process of large molecules going into a cell

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21
Q

Exocytosis

A

The process of large molecule going out of a cell

22
Q

Order of tiny things

A

1 nano meter
1000 micro meters
1 micro meter
1000 millimeters
10 millimeters
1 centimeter

23
Q

When the length of a side doubles,

A

Volume multiplies by 8
Surface area multiplies by 4

24
Q

When the size of a shape doubles,

A

Volume to surface area ratio divides by 2

25
When a cylinder is, the ratio is:
2 cm - 13:1 4 cm - 5:1
26
Heterotrophic
Lacking a cell wall
27
Best size for a cell
Large surface area to volume ratio (a smaller cell is better for this)
28
of cell parts so far
12
29
Smooth ER vs rough ER function
Smooth ER - transports lipids Rough ER - transports proteins
30
Order of protein production:
Nucleus, rough er (ribosomes), vesicles, (optional Golgi apparatus), cell membrane
31
Another name for cell membrane
Plasma membrane
32
What is the head of a phospholipid made out of
An alcohol and phosphate group
33
What is the tail of a phospholipid made out of
Chains of lipids
34
Can phospholipids move freely
Yes
35
Proteins
Aid in diffusion and cell recognition
36
Some membrane proteins have what attach to help cells recognize each other and other certain molecules
Carbohydrate chains
37
Big clump on drawing
Involved in cell-to-cell recognition
38
Hairs on drawing
Attracts water
39
Inside > outside
Hypertonic
40
Inside < outside
Hypotonic
41
A protein pump moves what against the concentration gradient
Ions
42
The protein that is used to pump ions is called what
A transport protein
43
Having a greater solute
Hypertonic
44
Having less solute
Hypotonic
45
As a relative concentration of solutes in two solutions increases, of necessity the concentration of water in the same two solutions:
Decreases
46
When a solution is hypotonic to a plant cell, the plant cell:
Won't swell due to the presence of its cell wall
47
How many cells are in the human body?
100 trillion
48
What is our first line of defense once a virus enters the body?
Antibodies
49
What's the next major barrier after the antibodies?
The cell wall
50
Plant cells need what solution?
Hypotonic