Cells Flashcards

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1
Q

robert hooke

A

the discovery of the cell

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2
Q

antionie van leeuwenhoek

A

saw bacteria and made his own microscope

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3
Q

the cell theory (3 parts)

A
  1. all living things are made of cells
  2. the cell is the basic unit of structure/function
  3. cells come from pre-existing cells
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4
Q

matthias schleiden

A

discovered that all plants were made of cells

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5
Q

theodor schwann

A

discovered that all animal were made of cells

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6
Q

rudolf virchow

A

cells come from pre-existing cells

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7
Q

eukaryotic cells

A

have a nucleus

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8
Q

prokaryotic cells

A

don’t have a nucleus (bacteria)

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9
Q

cell membrane

A

surrounds animal and plant cells, selectively permeable, contain phospholipid bilayers

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10
Q

cytoplasm

A

jelly-like substance inside the cell membrane that is the medium for chemical reactions/metabolism. composed of water, salts, various organic chemical materials

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11
Q

mitochondria

A

supplies energy to the cell, is a double membrane and produces ATP. contains two membranes that enclose it. “bean” structure

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12
Q

ribosomes

A

made up of RNA and protein and does protein synthesis. doesn’t have lipid bilayer and is located on rough ER

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13
Q

rough ER

A

intracellular pathway for proteins to be assembled and folded. has ribosomes and look like sheets

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14
Q

smooth ER

A

doesn’t have ribosomes, synthesis of lipids and has the process of detoxification

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15
Q

golgi apparatus/body

A

modify, sort, storage, and package proteins. help manufacture and store cellular secretions.

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16
Q

lysosomes

A

membrane-bound organelle that contains digestive enzymes for breaking down macromolecules. lipid-bilayer.

17
Q

peroxisome

A

small membrane-enclosed organelle that contains catalase to break down hydrogen peroxide to maintain the organelle’s balance.

18
Q

vacuole

A

membrane-bound organelle that is found in both animals and plants which contains storage for water, carbs, salts, etc.

19
Q

flagella

A

whip-like extensions of the cell surface, helps aid in movement

20
Q

cilia

A

move water relative to the cell in a regular movement. made of microtubules. hair-like and short

21
Q

cytoskeleton

A

helps cells maintain their shape and internal organization. provides support that enables cells to carry out essential functions like division and movement.

22
Q

microfilament

A

assist with cell movement. is threadlike and thin structure and is made of a protein called actin.

23
Q

microtubules

A

regulate cell growth/movement. cylindrical shell/hollow tube

24
Q

vesicle

A

intraceullar structure that takes proteins from ER to golgi apparatus

25
Q

nucleus

A

has its own membrane and stores hereditary material which eventually guides the production of proteins indirectly

26
Q

chromosomes

A

where genes are located and are threadlike (organized)

27
Q

chromatin

A

DNA/protein however are unorganized chromosomes/uncoiled DNA

28
Q

nucleolus

A

located inside nucleus and creates ribosomes

29
Q

chloroplasts

A

contains chlorophyll (green) and is a conversion factory for sun energy to glucose

30
Q

chromoplasts

A

all other pigments are created here

31
Q

leukoplasts

A

don’t have pigments and store starch. use hydrolysis and is found in roots

32
Q

cell wall (plant and bacteria)

A

rigid/not flexible and is made up of cellulose

33
Q

centrioles

A

help in cell division