Bio 2 Midterm

Front 1

As a general rule, the _______ is the best measure of central tendency because it is more precise.

Back 1

Mean

Front 2

Which website does Dr. McCue recommend for finding a journal club article?

Back 2

Academic Search Complete/EBSCO

Front 3

In the language of experiments, what is a treatment?

Back 3

a condition or intervention which is applied to individuals (independent variable)

Front 4

Which of the following is NOT a measure of variability?

Back 4

Median

Front 5

How is variation within an experimental group typically shown on a graph?

Back 5

Error Bars

Front 6

How should you cite references in the text of Dr. McCue's journal club?

Back 6

(Reference number)

Front 7

A graph that uses vertical bars to represent data is called a ____.

Back 7

Column graph

Front 8

How are experimental groups that are found to be significantly different from one another indicated on a graph?

Back 8

Asterisks or Letters, and description in caption

Front 9

Which of the following is NOT a common measure of central tendency

Back 9

Range

Front 10

The probability that two groups are the same is called the:

Back 10

p-value

Front 11

In the language of experiments, what is a dependent variable?

Back 11

something that is measured from the subjects

Front 12

What does it mean for a result to be statistically significant?

Back 12

The result or relationship is caused by something other than mere random chance.

Front 13

What is the standard p-value for 2 groups to be considered Significantly Different?

Back 13

p<0.05

Front 14

1 micron is equivalent to:

Back 14

one millionth part of a meter

Front 15

The ordinary refrigerator, when operating normally, has a temperature that approaches:

Back 15

4°C

Front 16

The best for pipetting 75 microliters

Back 16

P200 Micropipettor with Yellow Tip

Front 17

1 milliliter is equivalent to:

Back 17

1,000 microliters

Front 18

1000 microliters is equivalent to:

Back 18

1 ml

Front 19

The regular laboratory incubator maintains a temperature of about:

Back 19

37°C

Front 20

The best for collecting 0.5 ml

Back 20

1.5 ml e-tube (eppendorf tube)

Front 21

Members of which prokaryotic domain are most closely related to eukaryotes evolutionarily?

Back 21

​archaea

Front 22

Which characteristic is least applicable to the development of science?​

Back 22

​personal conviction

Front 23

The role of a control in an experiment is to

Back 23

provide a basis of comparison to the experimental group.

Front 24

What is a hypothesis?​

Back 24

a testable explanation of a natural phenomenon

Front 25

Living organisms are members of all of the levels listed below. However, rocks are components of​

Back 25

both the ecosystem and the biosphere.

Front 26

What characteristic is common to all living things?​

Back 26

All living things sense and respond to change.

Front 27

Which of the following best defines the term transgenic organism?

Back 27

an organism containing a gene from another species

Front 28

The human genome contains approximately ______ genes.

Back 28

21,000

Front 29

Which of the following enzymes catalyzes the elongation of a new DNA strand?

Back 29

DNA polymerase

Front 30

Use Final Volume - Concentrate Volume for:

Back 30

Dilutions: Diluent Volume (water)

Front 31

A 3-dimensional image is obtained with the transmission electron microscope.

Back 31

False

Front 32

Birefringent particles or particles like talc, silica and urate are examined using:

Back 32

polarized light

Front 33

The technique used to replicate small amounts of DNA in the laboratory is:

Back 33

polymerase chain reaction (PCR)

Front 34

Electron microscope create colored images.

Back 34

False

Front 35

New instruments are validated by the manufacturer and may be put into use immediately.

Back 35

False

Front 36

Maximum resolution of about 0.05 nanometers and maximum magnification of 1,000,000X

Back 36

Electron microscope

Front 37

When checking the pH of a staining solution, the pH meter should be calibrated using a standard solution with a pH value:

Back 37

closest to that of the staining solution

Front 38

The correct order of steps in ELISA:

Back 38

Antigen, Primary Antibody, Secondary Antibody, Substrate

Front 39

Antibodies are shaped like the letter

Back 39

Y

Front 40

ELISA stands for:

Back 40

Enzyme Linked Immunosorbent Assay

Front 41

To be positive on an ELISA, an infected patient's serum must contain:

Back 41

Antibodies to the infectious agent

Front 42

The ultimate source of all new alleles is

Back 42

mutation.

Front 43

​The operation of natural selection depends upon the fact that ____.

Back 43

some individuals have a better chance to produce more offspring

Front 44

Which of the following represents a pair of homologous structures?

Back 44

the wing of a bat and the flipper of a whale

Front 45

​The tailbone of humans is an example of a(n) ____.

Back 45

​vestigial feature

Front 46

​The most important evidence that Darwin used to develop his theory of natural selection came from ____.

Back 46

​the Galápagos Islands

Front 47

When 1 formula weight (gram molecular weight) of a chemical is dissolved in 1 L of solution, the solution is called:

Back 47

1 molar

Front 48

Use (Low concentration/High concentration) x Final Volume for

Back 48

Dilutions: Concentrate Volume

Front 49

Use Formula Weight (g) x Final Molarity (M) x Final Volume (L) for:

Back 49

Molar Solutions: Solute

Front 50

The EXCEL tabs for editing axis titles, legends, and error bars is:

Back 50

CHART TOOLS, LAYOUT

Front 51

What does it mean for a result to be statistically significant

Back 51

The result or relationship is caused by something other than mere random chance.

Front 52

The EXCEL tabs for making a graph:

Back 52

INSERT, COLUMN

Front 53

Which of the following statements is true?

Back 53

The larger the sample size, the closer the sample mean will be to the population mean

Front 54

What is the relationship between Standard Error, Standard Deviation and Variance?

Back 54

Var>SD>SE

Front 55

The probability that two groups are the same is called the:

Back 55

p-value

Front 56

Why do we use inferential statistics?

Back 56

Inferential statistics are used to help us to generalise from the sample to the whole population.

Front 57

​Four of the following five events shuffles existing alleles into different combinations in sexually reproducing organisms. Which one is the exception?

Back 57

mutation

Front 58

Mutations are important because they:

Back 58

provide variation that can result in evolutionary change.

Front 59

​Four of the following are characteristics of a species. Which one is the exception?

Back 59

They are identical in appearance

Front 60

​Sexual dimorphism has arisen as a result of ____.

Back 60

​sexual selection

Front 61

​Stabilizing selection occurs when

Back 61

​the extremes of the population have a lesser chance to survive.

Front 62

The Hardy-Weinberg law is

Back 62

​useful in determining the extent to which a sexually reproducing population is evolving.

Front 63

Allopatric speciation requires ____.​

Back 63

​physical separation

Front 64

Which of the following best expresses the concept of natural selection?

Back 64

differential reproductive success based on inherited characteristics

Front 65

The emergence of many diverse species from a common ancestor is called

Back 65

adaptive radiation.

Front 66

modern geologists estimate that the age of Earth is about:

Back 66

4.5 billions

Front 67

Which of the following pHs is considered acidic?

Back 67

6.5

Front 68

Which of the following types of reproductive barriers separates a pair of moth species that could interbreed except that the females' mating pheromones are not attractive to the males of the other species?

Back 68

behavioral isolation

Front 69

Sympatric speciation commonly occurs through ________ in plants, but is more likely to occur through ________ in animals.

Back 69

polyploidy . . . habitat differentiation and sexual selection

Front 70

Speciation caused by a change in the course of a river is an example of ____ speciation.​

Back 70

​allopatric

Front 71

Which of the following is the best definition of sympatric speciation?​

Back 71

​divergence within a population leads to speciation in the absence of a physical barrier to gene flow.

Front 72

Which statement about gene mutations is FALSE?​

Back 72

All mutations are transmitted to the next generation.

Front 73

What is the term for a group of organisms of the same species that occupies a specified area?

Back 73

Population

Front 74

The geographic isolation of a population from other members of the species and the subsequent evolution of reproductive barriers between it and the parent species describes ________ speciation.

Back 74

allopatric

Front 75

Two populations of organisms belong to the same biological species when they

Back 75

encounter each other, mate, and produce viable, fertile offspring under natural conditions