cell organelles Flashcards

1
Q

what is the structure of the nucleus?

A

nuclear membrane (double membrane) engulfs nucleus

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2
Q

what in the cell does the nucleus regulate?

A

cell division & growth, protein development, cell death

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3
Q

what is another term for the nucleus?

A

control center

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4
Q

what does the nucleus contain?

A

contains DNA, so has cell’s genetic info

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5
Q

what is the structure of ribosomes?

A

small, circle-like structure

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6
Q

what happens on the side of ribosomes?

A

ribosomes are the site of protein synthesis

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7
Q

what do ribosomes read from the cell?

A

the blueprints for proteins made by the cell are read by ribosomes

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8
Q

what do ribosomes makes?

A

makes the amino acid sequence according to the genetic code blueprints

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9
Q

what are 2 types of endoplasmic reticulums?

A

rough ER & smooth ER

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10
Q

what is the structure of the ER?

A

network of membranes in cells

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11
Q

what is made in the ER?

A

the passageway where chemicals are made

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12
Q

what is the function of the ER in general?

A

the process & transport of new materials

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13
Q

what is the appearance of the rough ER?

A

a rough, bumpy appearance

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14
Q

what is the function of the rough ER?

A

folds & tugs new proteins to transport them

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15
Q

does the rough ER or the smooth ER have ribosomes attached to them?

A

rough ER

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16
Q

what is the function of the smooth ER?

A

hormone & lipid synthesis

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17
Q

what is the structure of the golgi apparatus?

A

series of flatted, membrane-bound sacs

18
Q

what is the function of the golgi complex?

A

receives proteins from the rough ER, then packages & distributes them to the cell membrane

19
Q

when the golgi apparatus packages & distributes proteins to the cell membrane what happens to these proteins?

A

the proteins either become apart of the lipid bilayer or it leaves the cell

20
Q

what is the structure of lysosomes?

A

small, spherical organelles with digestive enzymes

21
Q

what are the 2 functions of lysosomes?

A
  1. breaks down & recycles unneeded materials for the cell
  2. helps in apoptosis
22
Q

what is apoptosis?

A

programmed cell death

23
Q

what do the lysosomes break down?

A

old cell parts, invading bacteria & viruses

24
Q

what is the mitochondria?

A

the site of respiration

25
Q

what is the main function of the mitochondria?

A

to make ATP and store energy for biochemical reactions

26
Q

what is ATP used for?

A

ATP fuels the activities of the cell

27
Q

what is the structure of centrioles?

A

paired barrel shaped organelles in cytoplasm

28
Q

what is the function of centrioles?

A

used in cell division by makes microtubules to pull a copy of each chromosome to opposite sides of the cell

29
Q

what are microtubules?

A

long, stiff fibers used to pull chromosomes during cell division

30
Q

what is the structure of cytoplasm?

A

jelly-like substance filling the inside space of cells

31
Q

what is cytoplasm made of?

A

mainly water, but also salt, enzymes, and other organic molecules

32
Q

what is the function of the cytoplasm?

A

surrounding & protecting organelles

33
Q

what 2 processes take place in the cytoplasm?

A

protein synthesis & glycolysis

34
Q

what is the structure of the nucleolus?

A

spherical structure engulfing the nucleus

35
Q

where is RNA transcribed?

A

in the nucleolus

36
Q

what is the function of the nucleolus?

A

to make & assemble ribosomes, which then go to the cytoplasm

37
Q

what are the 2 types of chromatin?

A

euchromatin & heterochromatin

38
Q

what is chromatin made of?

A

macromolecules of DNA, RNA, and proteins in the nucleus

39
Q

what are the 2 functions of chromatin?

A
  1. packages DNA to fit in the nucleus
  2. strengthens DNA for mitosis & meiosis
40
Q

what is another term for the cell membrane?

A

plasma membrane

41
Q

what is the cell membrane?

A

the semi permeable phospholipid bilayer

42
Q

what is the function of the cell membrane?

A

controls what goes in & out of the cell