Parts Of A Cell Flashcards

0
Q

What are all the cellular contents between the plasma membrane and the nucleus called?

A

Cytoplasm

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1
Q

What is cell’s flexible outer surface called?

A

Plasma membrane

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2
Q

What is another term for ‘intracellular fluid’?

A

Cytosol

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3
Q

What are the little organs within the cytoplasm called?

A

Organelles

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4
Q

What is the large organelle which houses most of the cell’s DNA called?

A

Nucleus

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5
Q

Describe the plasma membrane

A

A phospholipid bilayer with markers Like a fluid mosaic A selective barrier that regulates the flow of materials into and out of a cell.

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6
Q

Which are the protein factories?

A

Ribosomes

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7
Q

What can be rough or smooth

A

Endoplasmic reticulum

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8
Q

What makes the rough ER rough? I

A

Bubbles of ribosomes

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9
Q

Which are the suicide sacks?

A

Lysosomes

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10
Q

Which are the energy powerhouses?

A

Mitochondria

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11
Q

What is the energy currency

A

ATP

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12
Q

What bit of a cell do only plants have

A

Cell wall Fibre comes from when eating our greens

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13
Q

What type of cell has no nucleus- the RNA/DNA is dispersed throughout cytoplasm

A

Prokaryotic

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14
Q

Which type of cell has a complex cell wall

A

Prokaryotic

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15
Q

Which type of cell has a nucleus

A

Eukaryotic

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16
Q

Which type of cell has no organelles (except ribosomes)

A

Prokaryotic

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17
Q

Which type of cell is always single Unicellular organism

A

Prokaryotic

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18
Q

What is the ‘rats tail’ of a cell called

A

Flagellum

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19
Q

Which organelle does respiration take place in

A

Mitochondria

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20
Q

What is the function of the plasma membrane

A

Controls traffic in and out of cell

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21
Q

Define the two layers of phospholipids

A

Hydrophilic, water loving, heads to the outside Hydrophobic, water hating, tails to the inside

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22
Q

Where are the trans membrane proteins and describe their 3 functions

A

Span through the plasma membrane surrounded by the phospholipid bi-layer. Immunological identity (combined with carbohydrate molecules) Receptors for hormones etc Transport proteins

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23
Q

Which is the only eukaryotic cell without a nucleus and why

A

Erythrocytes red blood cells More room for haemoglobin which carries oxygen Bendier so travels more easily

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24
What is at the edge of the nucleus?
Nuclear membrane
25
What is at the centre of the nucleus Describe it
Nucleolus Spherical cluster of protein DNA and RNA. Visible when cell is not dividing
26
Where are chromosomes found and what are they?
Found in a cell's nucleus Long threads of DNA Each made up of many genes
27
What do DNA molecules carry?
The genetic code which determines the characteristics of a living organism.
28
What is a gene
A section of DNA which codes for a specific protein Unit of heredity Can be copied and passed on to next gen
29
What is the structure of DNA
double helix
30
What are two types of markers in the cell membrane?
(transport) proteins Carbohydrate chains
31
DNA is in the nucleus within strands of -
chromatin
32
What do mitochondria produce with the help of oxygen
ATP
33
What re the inner folds of the mitochondria called
Cristae
34
which is the 2nd largest organelle
Mitochondria
35
Which organelles make up 25% cell mass?
Ribosomes
36
Describe two types of Ribosomes
stationary - embedded in rough ER mobile - injects proteins directly into cytoplasm
37
Where does the Endoplasmic Reticulum stretch to and from
cell membrane to nucleus
38
What does the rough ER do?
Ribosomes embedded synthesizes/transports proteins
39
What does the smooth ER do?
Synthesises/transports lipids/steroid hormones breakdown toxins
40
What is Krebs cycle?
Part of cellular respiration
41
Where would you find the Golgi Apparatus?
Near the nucleus
42
How are Glogi Apparatus composed?
Numerous membranous layers forming a sac
43
What do Golgi A. do?
packages proteins from the ER
44
Which is the packaging plant of the cell?
Golgi Apparatus
45
Which are smaller - Vesicles or Vacuoles
Vesicles
46
Describe the structure of Vesicles & Vacuoles
Membrane bound sacs containing a fluid solution
47
Which are the pick up trucks of the cell moving things around?
Vesicles and Vacuoles
48
What is the function of Vesicles/Vacuoles?
Storage, digestion, waste removal, transport. Move substances between structures within the cell AND in and out of the cell.
49
Which is the special type of vesicle containing strong digestive enzymes?
Lysosomes
50
What happens if a Lysosome ruptures?
Strong digestive enzyme will digest whole cell.
51
What is the function of the lysosomes?
Digest what they can, spit out what they can't! Digestive plant for proteins, lipids and carbs transports digested material to cell membrane for removal
52
Where are microtubules found?
Form Cytoskeleton Flagella Cilia assembled in the centrioles
53
What are long, un-branched hollow tubes of protein?
Microtubules
54
What support and shape the cell?
Microtubules
55
Describe function of microtubules
support/shape cell aids movement of materials in/out of cell aids movement of cell as forms cilia & flagella Aids cell division/reproduction in Centrioles
56
Which are the paired cylindrical organelles in the shape of an X?
Centrioles
57
Where are centrioles found?
In the Centrisome near the nucleus
58
What are centrioles made of?
microtubules
59
How many sets of X shaped centralise are there in a cell?
9
60
Which key process are the Centrioles involved in?
Cell division.
61
2 main functions of plasma membrane
contain cell contents controls cellular traffic
62
role of proteins in plasma membrane
transport immunological identity act as receptors