Chapter 4 Flashcards

1
Q

the ___ is the basic/smallest unit of all living organisms

A

cell

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2
Q

cells can ___ and respond to the ___

A

replicate, environment

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3
Q

where does all metabolism take place?

A

inside the cell

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4
Q

what are the two types of cells?

A

prokaryotic, eukaryotic

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5
Q

___ do not contain organelles and are much smaller

A

prokaryotes

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6
Q

all cells contain: ___, ___, ___

A

plasma membrane, region where DNA is stored, cytoplasm

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7
Q

the plasma membrane is made of a ___

A

lipid bilayer (aka two layers of phospholipids)

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8
Q

___ membrane proteins adhere to each other

A

adhesion

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9
Q

___ membrane proteins allow cell communication

A

communication

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10
Q

___ membrane proteins allow things in and out of the cell

A

receptor

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11
Q

___ membrane proteins recognize our own cells from others

A

recognition

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12
Q

as volume increases in a cell, the surface area will increase ___

A

to a lesser degree

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13
Q

the more surface area, the easier it is to move substances in/out of the cell. that is why cells are ___

A

small

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14
Q

the cell theory states that:

A

every organism is composed of one or more cells, the cell is the smallest unit that has properties of life, cells come from preexisting cells

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15
Q

characteristics of prokaryotic cells:

A

no nucleus, no membrane-bound organelles, smallest cells, bacteria

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16
Q

characteristics of eukaryotic cells:

A

organelles, DNA enclosed in a nucleus

17
Q

eukaryotic organisms include all organisms in the kingdoms:

A

plantae, protista, animalia, fungi

18
Q

DNA is located in the ___

A

nucleus

19
Q

the nucleus contains:

A

nuclear envelope, nucleoplasm, nucleolus (contructs ribosomal subunits), chromatin

20
Q

the endomembrane system of the cell’s associated organelles:

A

endoplasmic reticulum, golgi bodies, vesicles

21
Q

rough ER ___ ribosomes and assembles ___

A

contains; proteins

22
Q

smooth ER ___ ribosomes and assembles ___

A

does not contain; lipids

23
Q

membrane sacs that move through the cell membrane to remove products

A

vesicles

24
Q

packages and releases cell products such as proteins and lipids

A

golgi bodies

25
Q

where is ATP produced?

A

mitochondria

26
Q

the mitochondria has ___ and requires ___

A

two membranes; oxygen

27
Q

double membrane-enclosed organelles that function in photosynthesis or storage

A

plastids

28
Q

both mitochondria and chloroplasts have:

A

folded double membranes, their own DNA/RNA, size as bacterial cell

29
Q

vacuole of plant cells makes up to ___ of cell’s interior

A

90%

30
Q

the secondary cell wall contains ___, which is waterproof and strong

A

lignin

31
Q

junctions of plant cells:

A

plasmodesmata

32
Q

junctions of animal cells

A

tight junctions and gap junctions

33
Q

components of cytoskeleton

A

microtubules, microfilaments, intermediate filaments

34
Q

cells with many cilia can create sweeping motions

A

motor proteins

35
Q

usually one. helps cell move

A

flagella

36
Q

false feet of amoebas

A

pseudopods