Ap Bio Labs

Question 1

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

Answer 1

heterozygote advantage

Question 2

from high to low water potential

Answer 2

water potential gradient

Question 3

spinach disks floated when exposed to:

Answer 3

Co2 and water

Question 4

Ideal gas law

Answer 4

PV= nRT

Question 5

which peas consume more oxygen

Answer 5

germinating peas

Question 6

purple gram stain

Answer 6

gram positive (THICK layer of peptidoglycan)

Question 7

pink gram stain

Answer 7

gram negative (THIN layer of peptidoglycan)

Question 8

one ancestor and SOME of the decendants

Answer 8

polyphyletic

Question 9

what was a sign of cross over

Answer 9

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

Question 10

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

Answer 10

transformation

Question 11

using plasmids to move DNA from one cell to another

Answer 11

transformation

Question 12

role of sulfuric acid in the enzyme lab

Answer 12

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

Question 13

calculate rf value

Answer 13

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

Question 14

can environmental factors alter gene expression?

Answer 14

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

Question 15

rf value cannot be greater than

Answer 15

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

Question 16

this travels the furthers on a chromatogram

Answer 16

solvent front

Question 17

Crossing over occurs in

Answer 17

ONLY prophase I in meiosis

Question 18

two chromosomes come together and align themselves lengthwise

Answer 18

synapsis

Question 19

synapsis occurs in

Answer 19

Meiosis I

Question 20

fossil record contains the best evidence for

Answer 20

macroevolution

Question 21

earliest prokaryotic fossils are found in this type of rock

Question 22

enzyme that seals the ends of the cut DNA sequences

Answer 22

DNA ligase

Question 23

find out fossil age because parent isotopes decay into daughter isotopes

Answer 23

radioactive dating

Question 24

DNA migrates from

Answer 24

negative to positive

Question 25

role of buffer solution in gel electrophoresis

Answer 25

allows DNA to move because it conducts electricity

Question 26

finches developing into different species fast on an island

Answer 26

adaptive radiation

Question 27

fast increase in the number of species with a COMMON ancestor

Answer 27

adaptive radiation

Question 28

higher leaf surface area=

Answer 28

more stomata, more transpiration

Question 29

hydrogen peroxide decomposes into

Answer 29

H2 and 02

Question 30

why would the enzyme activity taper off and slow down

Answer 30

the amount of substrate that the enzyme is using to catalyze the reaction is pretty much gone

Question 31

behavioral, physiological, and genetic changes limit the population
it levels off at carrying capacity

Answer 31

intrinsic rate of increase

Question 32

results in heritable changes in a population spread over many generations

Answer 32

evolution

Question 33

perfect reducing conditions in earths atmosphere make organic molecules
OR meteorite brought dust clouds that formed amino acids

Answer 33

origin of life on earth

Question 34

movement in a direction that is a response to a stimulus in ANIMALS

Answer 34

taxis

Question 35

movement that is NOT in a direction ex: speeding up or slowing down

Answer 35

kinesis

Question 36

move which way its faced without moving its location in PLANTS ex: sunflower

Answer 36

tropism

Question 37

only decedents in a group with NO common ancestor

Answer 37

paraphyletic