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510 mid year exams > 509 cells > Flashcards

509 cells Flashcards

1
Q

What is a cell?

A

the basic structural and functional unit of living organisms

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2
Q

Name the structure of a cell?

A

Plasma membrane
cytoplasm
plasma membrane

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3
Q

Name the structure of the nucleus?

A

Nuclear pores
Nuclear envelope
chromatin
nucleolus

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4
Q

What does the nucleus do?

A

control centre of the cell
directs cell activity for reproduction
contains genetic matarial - DNA which carries instructions for synthesis of proteins

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5
Q

Encloses the cytoplasm, acts as a semipermable barrier to the movement of substances in and out of the cell?

A

The plasma membrane - has microvilli - increases the cells absorptive surface area
includes cell junctions - gap junctions - desmosomes junctions

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6
Q

Is where most cellular activities occur?

A

The cytoplasm - contains cytosol and organelles

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7
Q

Are sites of ATP synthesis?

A

Mitochondriab- power house of the cell

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8
Q

Are sites of protein sysnthesis?

A

Ribosomes

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9
Q

Packages porteins for export from the cell?

A

Golgi apparatus

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10
Q

Carries out intercellular digestion?

A

Lysosomes

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11
Q

disarm dangerous chemicals in the cell?

A

peroxisomes

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12
Q

Function in cellular support and motion?

A

Cytosketal elements

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13
Q

Plays role in cell division and form the bases of cilia and flagella?

A

Centrioles

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14
Q

smooth and rough ER?

A

Endoplasmic reticulum
Rough er - studded with ribosomes
Smooth Er - free on ribosomes

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15
Q

Phospholipid =

A

glycerol - glycocalyx

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16
Q

Movement =

A

if its in water = osmosis

H-L

17
Q

What is protein synthesis?

A

DNA opens up and is copied by RNA

18
Q

What does MRNA do?

A

goes from nucleus to ribosome that moves along and cause transfer RNAB (= messenger RNA) to bring amino acids in order

19
Q

What parts of cell division are there?

A

Interphase
Prophase
metaphase
telophase

20
Q

What is Interphase

A

DNA is copied (46)

21
Q

What is prophase?

A

Lose our membrane from spindle

22
Q

What is metaphase?

A

Chromosomes are pulled apart

23
Q

What is telophase?

A

(cytokinesis) cell splits and new nuclear membrane

510 mid year exams (30 decks)

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