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BGSU Classes > Bio 1010 Lab > Flashcards

Bio 1010 Lab Flashcards

1
Q

steps of scientific method?

A

identify problem, form hypothesis, collect data, analyze data, form conclusion

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2
Q

sections of a lab report?

A

title, introduction, materials and methods, results, discussion, references

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3
Q

zooplankton

A

non-photosynthetic, produce CO2, consume O2

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4
Q

phytoplankton

A

photosynthetic, produce O2, consume CO2

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5
Q

species richness

A

number of species in a community

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6
Q

species evenness

A

relative abundance with which each species is represented in a community

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7
Q

shannon-weiner diversity index

A

determines how diverse a community is

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8
Q

what score does the shannon-weiner diversity index have to be greater than to be diverse?

A

1.7

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9
Q

what is pH?

A

presence or absence of hydrogen ions in water

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10
Q

what is dissolved oxygen?

A

measures amount of O2 in water

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11
Q

why are macro invertebrates useful when determining water quality?

A

sensitive to change in ecosystem, easy & inexpensive to collect, relatively immobile, critical part of food web

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12
Q

how are macro invertebrates useful when determining water quality?

A

can be found in all but the most severely polluted/ disturbed habitats

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13
Q

what is coliform bacteria analysis?

A

measurement of fecal contaimination

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14
Q

scientific notation?

A

: any number 1-10

x 10^?

?: indication of how many decimal places to move

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15
Q

doubling time formula?

A

70/ r

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16
Q

what does the r stand for in doubling time formula

A

rate of increase in percentage

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17
Q

compound growth equation?

A

Nt= N0 x (e)^rt

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18
Q

what does r stand for in the compound growth equation?

A

population growth rate in decimal form

19
Q

independent variable

A

The factor that is manipulated; variable whose effect is being studied

20
Q

dependent variable

A

The measurable effect, outcome, or response in which the research is interested

21
Q

controlled variable

A

a factor in an experiment that remains constant

22
Q

control group

A

the group that does not receive the experimental treatment

23
Q

Parts of a compound microscope?

A

ocular / eyepiece, objective, stage, course adjuster, fine adjuster

24
Q

What are dissecting microscopes used for?

A

larger objects

25
Q

what differentiates the dissecting microscope from the compound microscope?

A

does not contain the objective lenses, stage doesn’t move, 2 light sources

26
Q

what magnification does a low objective lens have?

A

4x

27
Q

what magnification does a medium objective lens have?

A

10x

28
Q

what magnification does a high objective lens have?

A

40x

29
Q

what magnification does the ocular lens have?

A

10x

30
Q

what is the total magnifying power?

A

objective Lens Power x ocular Lens Power

31
Q

what does the field of view of a microscope do as magnification increases?

A

decreases

32
Q

population

A

group of individuals of the same
species living in a particular geographic region

33
Q

absolute density

A

the exact number of
individual organisms living in an area

34
Q

relative density

A

an index that can be used for
density comparison

35
Q

eutrophication

A

excessive growth of algae and aquatic plants due to added nutrients

typically nitrogen and phosphorous

36
Q

species diversity

A

number and abundance of species in a community

37
Q

why is the mark and recapture method used?

A

to estimate population size where it is impractical to count each one

38
Q

how to create an in-text citation?

A

(authors last name, et al., year published).

39
Q

what does a spectrophotometer do?

A

measures how much light is absorbed, reflected, or transmitted through a sample

40
Q

what # is a growing population categorized by in fertility rates?

A

above 2.0

41
Q

what # is a declining population categorized by in fertility rates?

A

below 2.0

42
Q

what # is replacement level categorized by in fertility rates?

A

exactly 2.0

43
Q

reasons for high fertility rate?

A

high infant mortality, low economic opportunity, cultural large families, lack of birth control, religion, access to maternal and family care, starting families young

44
Q

how to bring down fertility rates?

A

birth control, education of women, the fewer children you have, the better quality of
life those children have, starting families later, urbanization

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