Test 2 Flashcards

1
Q

What domains are prokaryote cells classified in?

A

Bacteria and archea

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2
Q

Are prokaryotes smaller or larger than eukaryote cells?

A

Smaller

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3
Q

Prokaryote cell’s size allows them to what?

A

Reproduce very quickly and effectively

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4
Q

The region in a prokaryote cell where the genetic material is located

A

Nucleoid

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5
Q

Compartments that are specialized for specific cellular functions

A

Organelles

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6
Q

Encloses the cytoplasm; regulates interactions with the external environment

A

Plasma membrane

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7
Q

Nucleus

A

Contains the genetic material (DNA); nucleolus is the site of ribosome formation

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8
Q

Location where polypeptides and proteins are formed

A

Ribosomes

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9
Q

Small sacs that move materials between organelles in the endomembrane system

A

Vesicles

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10
Q

Component of the endomembrane System that has ribosomes attached; synthesizes proteins

A

Rough ER

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11
Q

Endomembrane system organelle where lipids and some carbohydrates are synthesized; detoxifies some chemicals

A

Smooth RE

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12
Q

Processing and packaging center

A

Golgi apparatus

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13
Q

Vesicle that contains enzymes that break down incoming molecules and cellular components

A

Lysosome

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14
Q

Site of photosynthesis and carbohydrate formation

A

Chloroplast

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15
Q

Site of cellular respiration and ATP synthesis

A

Mitochondrion

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16
Q

Layer of cellulose that supports cells

A

Cell wall

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17
Q

Internal framework of protein fibers: moves organelles and maintains cell shape

A

Cytoskeleton

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18
Q

Involved in moving the cell or moving materials along the surface of the cell

A

Flagella and cilia

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19
Q

Name the types of junctions?

A

Adhesion junctions, tight junctions, gap junctions and plasmodesmata

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20
Q

Junctions that hold cells together

A

Adhesion junctions and tight junctions

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21
Q

A junction that allows the passage of small molecules between cells

A

Gap junction

22
Q

Small membrane-lined channels that span the cell wall and contains strands of cytoplasm, which allows materials to pass from one cell to another

A

Plasmodesmata

23
Q

The capacity to do work

24
Q

What are the two basic forms of energy

A

Potential and kinetic

25
Potential energy
Stored energy
26
Kinetic energy
Energy of motion
27
The relative amount of disorganization
Entropy
28
The energy currency of cells
Adenosine triphosphate (ATP)
29
Protein molecules that function as organic catalysts to speed up chemical reactions
Enzymes
30
The reactant molecules that the enzyme acts on
Substrates
31
The energy needed to cause molecules to react to one another
Energy of activation
32
The three ways substances can enter a cell
Passive transport, active transport and bulk transport
33
A form of passive transport in which molecules move down their concentration gradient until equilibrium is achieved
Diffusion
34
Occurs when an ion or molecule diffuses across a membrane with assistance of a channel protein or carrier protein
Facilitated diffusion
35
The diffusion of water across a semipermeable membrane from an area of higher concentration to an area of lower concentration
Osmosis
36
Transporta macromolecules out of a cell via vesicle formation and often results in secretion
Exocytosis
37
Transports macromolecules into a cell via vesicle formation
Endocytosis
38
Makes use of receptor proteins in the plasma membrane
Receptor-mediated endocytosis
39
Photosynthesis
A process in which water is oxidized and carbon dioxide is reduced using solar energy
40
The combination of a reduction and a oxidation
Redox reaction
41
What are the four phases of complete glucose breakdown
Glycolysis, preparatory reaction, citric acid cycle ,then electron transport chain
42
What are the two types of fermentation
Lactic acid and alcohol
43
Where does glycolysis occur?
Cytoplasm
44
What is gained in glycolysis?
2 ATP and NADH
45
Where does the preparatory reaction take place?
Matrix of the mitochondria
46
What is gained in the preparatory reaction?
CO2 and NADH
47
Where does the citric acid cycle take place?
The matrix of the mitochondria
48
What is gained in the citric acid cycle?
NADH, FADH2, CO2, and 2 ATP
49
Where does the electron transport chain occur?
In the cristae of the mitochondria
50
What is gained from the electron transport chain?
34 ATP and H2O