Cells Flashcards

1
Q

Cell (Plasma) Membrane (aka Phospholipid Bilayer)

A

separates interior of cell from outside environment, moderates what goes in and out of cell

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2
Q

Cytoplasm

A

the gelatinous liquid that fills the inside of a cell

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3
Q

Golgi Apparatus (UPS)

A

organelle that acts as the packaging center of the cell and transports materials

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4
Q

Mitochondria

A

generate most of the energy; powerhouse (site of respiration)

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5
Q

Chloroplast (Plants Only)

A

produce energy through photosynthesis and oxygen-release processes

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6
Q

Nucleus

A

contains the chromosomes (genes), the cell’s control center

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7
Q

Ribosome

A

the site of protein synthesis (attach to ER)

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8
Q

Endoplasmic Reticulum

A

a transportation system within cell, carry ribosomes making proteins (ribosomes make an ER rough, smooth ER has lipids)

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9
Q

Lysosomes (Animals Only)

A

organelle that contains digestive enzymes, break down waste of cell

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10
Q

Cell Wall (Plants & Bacteria Only)

A

found outside of membrane and protects cell

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11
Q

Vacuole

A

helps in the storage and disposal of materials within cell (plants have large vacuole, animals have a small or no vacuole)

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12
Q

Nuclear Membrane

A

a double layer that encloses the cell’s nucleus

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13
Q

Nucleolus

A

area inside nucleus made up of RNA and proteins and is where ribosomes are made

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14
Q

Centrioles

A

organizes things (microtubules) that serve as the cell’s skeletal system

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15
Q

Cilia & Flagella

A

used to move an entire cell (hair-like)

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16
Q

Prokaryotes

A

organisms whose cells lack a nucleus and other organelles, have circular DNA, and are only single-celled (bacteria and archaea)

17
Q

Eukaryotes

A

have a nucleus, membrane-bound organelles, and can be multicellular

18
Q

Robert Hooke

A

while looking at cork, he discovered cells

19
Q

3 Parts of Cell Theory

A

All living things are made of cells.
Cells are the basic units of structure and function in living things.
Cells come from other, pre-existing cells.

20
Q

Anton van Leeuwenhoek

A

made a simple microscope to see unicellular organisms in pond water

21
Q

Robert Brown

A

discovered nucleus

22
Q

Matthias Schleiden

A

hypothesized that plants are made of cells

23
Q

Theodor Schwann

A

hypothesized that animals are made of cells

24
Q

Rudolf Virchow

A

determined the function of the nucleus and that all cells come from pre-existing cells

25
Photosynthesis
process where plants convert energy from sunlight into energy that can be stored for later use
26
Cellular Respiration
chemical reactions that break down glucose to produce ATP (happens in mitochondria)
27
Endergonic
absorption of energy (e.g. photosynthesis)
28
Exergonic
release energy (e.g. respiration)
29
Anaerobic
without oxygen
30
Aerobic
with oxygen
31
Hydrolysis/Digestion
adding water to break a bond (e.g. polysaccharide to monosaccharide; starch to glucose)
32
Dehydration Synthesis
removing water to create a bond
33
Active Transport
movement across membrane that requires energy (LOW TO HIGH)
34
Passive Transport
movement across membrane that requires no energy (HIGH TO LOW)
35
Diffusion
movement of molecules across membrane from high to low concentration
36
Osmosis
water molecules moving through a membrane
37
Photosynthesis Equation
6CO2 + 6H2O → C6H12O6 + 6O2 (energy above arrow)
38
Respiration Equation
C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy (38 ATP molecules)