final Flashcards

1
Q

Small, circular DNA not part of genome
Functions: antibiotic resistance, virulence, nitrogen fixation, etc.
Transformation: external DNA transferred to or taken up by organism
Addition of genes on plasmid DNA changes phenotype
Genetic engineering:
Mutation: change in DNA sequence
Gene cloning or editing: new genes added to or replace genes on plasmid
Requires DNA strands to be cut

A

plasmids

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2
Q
AKA restriction endonucleases 
Cut double-stranded DNA 
Specific cut sites: palindrome sequences
Read same in both directions (radar, madam, etc.)
Read same on both DNA backbones
Results in sticky ends: backbones cut at different locations
EcoRI
Naturally occurs in E. coli
Creates 4 nucleotide-long sticky ends
A

restriction enzymes

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3
Q

tet resistant
tet & UV resistant
tet & ampicillin resistant

A

each bacteria transformed with plasmids for these phenotypes

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4
Q

what do serological pipettes measure?

A

milliliters (mL)

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5
Q

osmosis

A

net movement of water across a semipermeable;e membrane

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6
Q

hemolysis

A

destruction on red blood cells

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7
Q

spectrometer

A

measures how light reacts with absorbance of substances

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8
Q

diffusion

A

net movement of particles from an area of high concentration to low concentration

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9
Q

concentrations are relative to ______.

A

another solution

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10
Q

is concentration an example of discrete data or continuous data?

A

continuous

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11
Q

In lab you measure the absorbance at specific time intervals in order to calculate concentration. What is the independent variable?

A

time

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12
Q

when plotting continuous data, would you use a scatter plot or a bar graph?

A

scatterplot

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13
Q

how do enzymes catalyze a reaction without being consumed?

A

by lowering the activation energy

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14
Q

what differs between the general model and the induced-fit model of enzyme catalysts?

A

enzyme changes conformation in induced fit model

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15
Q

benzoquinone (substrate, product, or enzyme?)

A

product

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16
Q

catechol (substrate, product, or enzyme?)

A

substrate

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17
Q

catecholase (substrate, product, or enzyme?)

A

enzyme

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18
Q

what was the main dependent variable from the enzyme lab?

A

benzoquinone concentration

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19
Q

null hypothesis

A

the amount of sunlight per day throughout the year will not significantly effect plant growth

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20
Q

alternative hypothesis

A

the amount of sunlight per day throughout the year will significantly significantly effect plant growth

21
Q

prediction

A

high amounts of sunlight will cause plant growth to increase

22
Q

if the p-value is greater than .05 do you reject or fail to reject the null?

A

fail to reject

23
Q

solutions that have equal amounts of solute

A

isotonic

24
Q

greater concentration of solutes outside of a cell compared to inside of cell.

A

hypertonic

25
Q

greater concentration of solutes inside of a cell compared to outside of cell

A

hypotonic

26
Q

can water freely pass through the cell membrane?

A

yes

27
Q

as permeability decreases, molecular weight

A

increases

28
Q

as polarity increases, permeability

A

decreases

29
Q

caption for a table

A

above

30
Q

caption for a figure

A

below

31
Q

the hemolysis lab measured the time to hemolysis for molecules varying in either polarity or molecular weight. what was the dependent variable?

A

time to hemolysis

32
Q

the hemolysis lab measured the time to hemolysis for molecules varying in either polarity or molecular weight. what was the independent variable?

A

molecular weight

33
Q

null hypothesis for hemolysis lab

A

molecular weight will not have a significant effect on the time to hemolysis

34
Q

alternative hypothesis for hemolysis lab

A

molecular weight will have a significant effect on time to hemolysis

35
Q

what gas is necessary for photosynthesis?

A

co2

36
Q

2 products of photosynthesis

A

oxygen, sugars

37
Q

what is paper chromatography useful for?

A

separating wavelengths

38
Q

the leaves of most plants ______ absorb green light

A

DO NOT

39
Q

why do photosynthetic organisms have different types of pigments?

A

so they can absorb different frequencies and wavelengths of light

40
Q

what was the difference between the extracts spinach and cyanobacteria spirulina?

A

they have different pigments

41
Q

location of photosynthesis

A

chloroplasts

42
Q

spectroscope

A

measures wavelength of light absorbance

43
Q

what pigments travel farthest from the origin line on chromatography paper?

A

non polar pigments, because they are repelled by the polar origin line

44
Q

fermentation allows some cells to metabolize organic nutrients and produce atp in the absence of

A

oxygen

45
Q

what carbon metabolism pathway is fermentation?

A

aerobic

46
Q

what makes fermentation an aerobic pathway?

A

no 02 is present

47
Q

dependent variable in the chromatography lab

A

co2 production

48
Q

independent variable in the chromatography lab

A

time

49
Q

_____ is one factor that separates DNA molecules during gel electrophoresis

A

size