Bio Flashcards

1
Q

who is robert hooke

A

First one to describe cells and look at a dead cell

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2
Q

who is Antoine Van leewenboek

A

first one to see living moving cells

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3
Q

who is matthias shleiden

A

stated that plants were made out of cells

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4
Q

Who is Theodore shwann

A

Stated that animals are made out of cells

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5
Q

who is robert brown

A

Discovered the nucleus in plant cells

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6
Q

who is francesco redi

A

disaproved the theory of spontaneous generation

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7
Q

who is louis pasteur

A

proved beyond a reasonable doubt that spontaneous generation of life does not now occur

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8
Q

who is rudolph Virchow

A

Observed cells dividing and stated that cells are formed by the division of pre-existing cells(biogenesis)

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9
Q

What is a Prokaryotic cells

A

are simple cells without a distinct membrane bound nucleus.

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10
Q

what is a Eukaryotic cells

A

More complex cells with membrane bound neclues

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11
Q

cell wall

A

Protects plant cells from mechanical damage

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12
Q

cell membrane

A

A selectivly permiable(controls what goes in and out) barrier between the inside and outside of the cell

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13
Q

Cytoplasm

A

A semifluid containing dissolved substances that are found between the spaces of the organelles

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14
Q

nucleus

A

contains dna and the genetic material of the cell. Ribosomes are produced in the nucleolus

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15
Q

ribosomes

A

Small complexes that translate genetic information into protein.

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16
Q

ER rough

A

Studded with ribosomes and Packages and transports protein

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17
Q

Er smooth

A

Synthesizes Lipids and packages them for transport.

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18
Q

Golgi apparatus

A

transport, sorting and modification of both protein and lipid

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19
Q

Lysosomes

A

Breakdown food particles, kill infections and recycle damaged or worn out cells.(Suicide cell)

20
Q

Vacuoles(vesicles)

A

Storage of food,water, minerals

21
Q

Central Vacuoles

A

store nutrients and water on which a cell can rely for its survival

22
Q

Mitochondria

A

powerhouse of the cell. Generates energy(ATP)

23
Q

Chloroplasts

A

Photosynthesis occurs and converts light energy into food

24
Q

which way do the phosphate heads faces

25
the phosphate head is ______
Hydrophilic
26
The fatty acid tails are ______
hydrophobic
27
where can proteins be found in the membrane
embedded in or attached to the phospholipid area
28
non polar molecules are ________
hydrophobic
29
Polar molecules are ________
hydrophilic
30
Charged Molecules are ________-
have a sphere of wter that prevents them passing through the membrane
31
simple diffusion
random motion of molecules that go from a region of high concentration to a region of low concentration.
32
does passive transport require energy?
no
33
what molecules can diffuse through the pores in the phospholipid area?
smalll,non polar, uncharges solute
34
hypotonic
the solute concentration is less than of the cell.burst
35
isotonic
the solute concentration of the solution is the same as that of the cell
36
hypertonic
the solute concentration of the solution is more than the cell.shrivel
37
where does water go in hypotonic
osmosis occurs and water moves in
38
where does water go in hypertonic
osmosis occurs. water moves out.
39
Hypotonic enviroment causes animal cells to
swell and lyse(Burst)
40
hypertonic enviroments cause cells to
shrivel
41
what environment do animals do best in?
isotonic
42
isotonic environment cause plant cells to become
flacid
43
plants do best in
hypotonic environment because pressure pushes out on the cell taht keeps the plant firm
44
what is facilitated diffusion
is diffusion using the help from transport proteins
45
transport proteins allow
small,polar molecules or ions
46
what is active transport
uses energy to move solutes against their concentration graident.
47
carrier protien
undergoes a change in shape.