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Flashcards in BIO LAB Deck (27)
1

hypotheses

a possible answer to the question being asked

2

null hypothesis (indicated by H knot-0)

assumes that the experimental treatment will have no effect

3

experiments are conducted to ______ the experiment

test

4

alternate hypothesis (indicated by H-A)

states there is a significant difference between the control and experimental group

5

independent variable

the variable that is manipulated (cost)

6

dependent variable

the measured result of the manipulation (effect)

7

experimental treatment

examines the effect of the independent variable on the dependent variable

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control treatment

examines the possible effect of other factors besides the manipulated variable on the dependent variable

9

constants

factors that are kept the same in each treatment

10

replication

performing the experiment under the same conditions many times to attain reliable results

11

sample mean

average of a sample

12

population mean

average of all individuals in a species in entire population

13

theory

established after a hypothesis has failed to be rejected multiple times

14

enzymes

biological catalysts that increase the rates of biochemical reactions in cells by facilitating the conversion of a specific substrate to a product

15

enzymes increase rate of reaction by lowering:

activation energy required for reaction to occur

16

substrates

reactants

17

enzyme kinetics

involves studying how fast an enzyme converts substrate to products

18

enzyme activity

the rate or velocity of the reaction catalyzed by the enzyme

19

spectrophotometer

measures concentration of pigment molecules by measuring how much light is absorbed as the reaction occurred

20

transmittance (T)

the ratio of transmitted light to incident light

21

absorbance (A)

the negative log of transmittance

22

Vmax

the maximum rate of reaction for a given enzyme and substrate

23

Km

the substrate concentration at which the reaction rate is half of its maximum value

24

competitive inhibitors

similar in shape to an enzyme's substrate and compete with the substrate for binding to the active site

25

non-competitive inhibitors

does not compete with the substrate for the active site, binds instead to other sites on the enzyme

26

eutrophication

the process by which a water body becomes enriched in nutrients from terrestrial ecosystems and can happen by natural processes and human activities

27

photolysis

the splitting of water into protons and oxygen in the presence of light