Cells Flashcards

(44 cards)

1
Q

What is the cell membrane made up of

A

Thin layer of lipids and proteins

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2
Q

What have scientists agreed up the cell membrane model

A

The Fluid Mosaic Model

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3
Q

Each phoshpholipid has ___ and ____

A

2 fatty acids and phosphate head

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4
Q

Cell wall is made up of 300 ___ chain

A

Glucose

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5
Q

What is the nucleus surrounded by

A

Nucleur envelope

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6
Q

Nucleus gets its genetic information from __

A

DNA

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7
Q

what are histones

A

Tightly wound strands of DNA coiled up with proteins

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8
Q

DNA and histone proteins together are __

A

Chromatin

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9
Q

What are chromosomes function

A
  • unpacks DNA in cell division

* controls protein and lipid synthesis

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10
Q

How many membranes does the nucleur envelope have

A

2 phoshpolipid biylayers

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11
Q

What does the nucleolus store?

A

rRNA

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12
Q

Why are the tubular canals in the ER important

A

Because it increases surface area; “the maze” that passes proteins through it

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13
Q

Rough ER produces lipids or proteins

A

Proteins (ribosomes attached)

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14
Q

Smooth ER produces lipids or proteins

A

Lipids (no ribosomes attached)

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15
Q

What two identical subunits are ribosomes made of

A

small and large

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16
Q

rRNA and proteins make up what?

A

Ribosomes

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17
Q

Clusters of ribosomes which produce proteins for inside the cell

A

Polyribosomes

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18
Q

What are the hollow tubes in the golgi apparatus called and what does each one contain?

A

Saccules contain enzymes

19
Q

What is exocytosis vs. Endocystosis

A

Leaving the cell and entering the cell

20
Q

What are vacouoles used for?

21
Q

What are vessicles used for?

A

Transportation of nutrients

22
Q

What type of enzymes do lysosomes have

A

Hydrolytic enzymes

23
Q

Lysosomes perform digestive processes like ___ and ___

A

Phagocytosis and pinocytosis

24
Q

How many layered membranes does the mitochondria have

25
Inside of mitochondria responsible for cellular respiration
Cristae
26
The cytoplasm of the mitochondria
The matrix
27
How many ATP molecules are formed for every sugar in cellular respiration
38
28
What 2 organelles are considered endosymbiotic?
Mitochondria and chloroplasts
29
What are plastids compared to chloroplasts
* both are only found in plant cells * plastids gives plants their colour * chloroplast is a specific plasted which turns green through photosynthesis
30
What organelle uses the opposite reaction that cellular respiration would in animal cells
Chloroplasts (through photosynthesis)
31
Where is chlorophyll in a chloroplast located
Grana
32
Cytoplasm of chloroplasts
Stroma
33
Each layer within a grana is called a ___
Thylakoid (looks like a coin)
34
What organelle is located near the nucleus, appears in pairs, and gives rise to basal bodies in animala
Centrioles
35
What does a basal body do
Direct the formation of cilia and flagella
36
What two things make of the cytoskeleton
Microtubules and actin filiaments
37
What does the cytoskeleton do
Maintains the shape and structure within the cell
38
What is each microtubule made up of
13 rows of tubulin proteins to make a hollow tube
39
What do microfilaments do
Responsible for movement in and out of the cell
40
What proteins make up microtubules
Actin or myosin proteins
41
What arrangment is cilia
9+2 arrangment of microtubules
42
What does cilia or flagella need in order to move
ATP (energy source)
43
True or false: flagella has the same microtubule arrangment as cilia
True, 9+2
44
What is diffusion
Molecules going from high to low concentration