Ap Bio Labs Flashcards

1
Q

having one copy of a disease gene that doesn’t give you the disease, but a resistance to a harmful disease

A

heterozygote advantage

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2
Q

from high to low water potential

A

water potential gradient

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3
Q

spinach disks floated when exposed to:

A

Co2 and water

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4
Q

Ideal gas law

A

PV= nRT

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5
Q

which peas consume more oxygen

A

germinating peas

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6
Q

purple gram stain

A

gram positive (THICK layer of peptidoglycan)

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7
Q

pink gram stain

A

gram negative (THIN layer of peptidoglycan)

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8
Q

one ancestor and SOME of the decendants

A

polyphyletic

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9
Q

what was a sign of cross over

A

spores that were not 4 black then 4 white
(a mix of black and white) were recombinant

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10
Q

the uptake of foreign DNA into the genome from the surrounding environment

A

transformation

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11
Q

using plasmids to move DNA from one cell to another

A

transformation

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12
Q

role of sulfuric acid in the enzyme lab

A

denatures the enzyme’s active site because of the low pH

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13
Q

calculate rf value

A

distance traveled by component/ (divided by) distance traveled by the solvent

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14
Q

can environmental factors alter gene expression?

A

YES this is what the lac operon is! having lactose in the environment induces it

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15
Q

rf value cannot be greater than

A

1 (bc the solute would have traveled further than the solvent)

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16
Q

this travels the furthers on a chromatogram

A

solvent front

17
Q

Crossing over occurs in

A

ONLY prophase I in meiosis

18
Q

two chromosomes come together and align themselves lengthwise

19
Q

synapsis occurs in

20
Q

fossil record contains the best evidence for

A

macroevolution

21
Q

earliest prokaryotic fossils are found in this type of rock

22
Q

enzyme that seals the ends of the cut DNA sequences

A

DNA ligase

23
Q

find out fossil age because parent isotopes decay into daughter isotopes

A

radioactive dating

24
Q

DNA migrates from

A

negative to positive

25
role of buffer solution in gel electrophoresis
allows DNA to move because it conducts electricity
26
finches developing into different species fast on an island
adaptive radiation
27
fast increase in the number of species with a COMMON ancestor
adaptive radiation
28
higher leaf surface area=
more stomata, more transpiration
29
hydrogen peroxide decomposes into
H2 and 02
30
why would the enzyme activity taper off and slow down
the amount of substrate that the enzyme is using to catalyze the reaction is pretty much gone
31
behavioral, physiological, and genetic changes limit the population it levels off at carrying capacity
intrinsic rate of increase
32
results in heritable changes in a population spread over many generations
evolution
33
perfect reducing conditions in earths atmosphere make organic molecules OR meteorite brought dust clouds that formed amino acids
origin of life on earth
34
movement in a direction that is a response to a stimulus in ANIMALS
taxis
35
movement that is NOT in a direction ex: speeding up or slowing down
kinesis
36
move which way its faced without moving its location in PLANTS ex: sunflower
tropism
37
only decedents in a group with NO common ancestor
paraphyletic