what was the primary reason proteins were initially considered more likely candidates for the hereditary moleucle in DNA

they are more complex in structure than DNA

what does it mean if a study result is statistically signifcant with a p-value of less than 0.05

there is a less than 5% probability that the results occured by chance

why is larger sample size important in scientific experiments

increases the reliability of the result by reducing impact of random chance

which of the following provides anatomical evidence for evolution

homologous structs show similarities between different species

how does the course approach misinformation

seminars focused on science communication and critiquing misinformation

in a clinical study, what is the purpose of the control group

to recieve a placebo or no treatment, serving as a baseline for comparison

what is the main limitation of observational studies in epidemiology

they can only establish correlations but not causation

what is Linnaean taxonomy an who developed it

a classification system based on physical characteristic carl linnaeus

what is emphasized as important for academic success in the course

active engagement and understanding of concepts over route memorization

in an experiment studying the effects of cell phone radiation on cancer risks what is the independent variable

the radiation ex[posure given to the rats

what is the difference between microevolution and macroevolution

microevolution refers to small changes, macroevolution refers to big change

what does the term molecular clock refer to in evolutionary biology

uses DNA similariteis to estimate the time since 2 species shared ancestors

what role does DNA play in providing evidence for evolution

DNA sequences can be used to construct phylogenetic trees

how does a hypothesis become a scientific theory

by consistenly holding up against rigorous testing and evidence over time

what are the three main components of a nucleotide in DNA

a sugar, a phosphate group, and a nitrogenous base

what is the primary goal of the course

to demystify science and enhance science literacy among students

what was the signifcance of Watson and Cricks double helix model of DNA

it provided a mechanism for DNA replication and genetic inheritance

what is one key differnece between anecdotal and scientific evidence

anecdotal evidence is not falsifiable, scientific evidence is falsifiable

which of the following is an example of microevolution

the extinction of the Wolly Mammoth due to environmental changes

what is one of teh fallibilities of science mentioned

biases and prior beliefs can affect scientific outcomes

what concept emphasizes sciences ability to improve over time

the structure of scientific revoutions

How is science described in terms of its process

As a creative, iterative, and evolving process

what does the peer review process aim to achieve in scientific research

validate and enhance the credibility of scientific result for publication

what are transitional fossils, and why are they important

fossils that provide evidence of signifcant evolutionary transitions

what role does science play in society according to the course

science is a foundation for critical thinking and problem-solving

what is the difference between a hypothesis and a scientific theory

a hypothesis is not yet tested, a theory is well-tested

what is chargaffs rule regarding the relationship between nitrogenous bases in DNA

the amount of adenine = thymine and the amount of guanine = cytosine

Which of the following best describes the scientific method

a dyunamic and flexible process that adapts to different inquiries

what topics does the course cover to enhance science literacy

cancer, COVID, diets, DNA, evolution and climate change

how do fossils contribute to the understanding of evolution

they provide physical evidence of extinct organisms and show evolution

why is diversity important in science

it reduces bias and leads to better scientific outcomes

what is the central idea expressed by theodosius dobzhansky's quote about evolution

evolution is the central concept in the diveristy of life

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Understanding Biology Midterm 1

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Questions 40

Answers

1
what was the primary reason proteins were initially considered more likely candidates for the hereditary moleucle in DNA
they contain all the genetic instructions for growth
proteins were more readily available for study
proteins can replicate more easily than DNA
they are more complex in structure than DNA
2
what does it mean if a study result is statistically signifcant with a p-value of less than 0.05
the results are unreliable and need to be retested
there is a less than 5% probability that the results occured by chance
the results are highly likely to be due random chance
the results are guaranteed to be free from random chance
3
friedrich mieschers discovery of nuclein was made in which type of cells
yeast cells
bacteria
white blood cells
plant cells
4
why is larger sample size important in scientific experiments
it ensures results are free from random chance
increases the reliability of the result by reducing impact of random chance
it makes the experiemnt easier to replicate
it allows the researcher to avoid using a control group
5
which of the following provides anatomical evidence for evolution
unique structures in each species that show no evolutionary relationship
homologous structs show similarities between different species
the development of specialized organs only in certain organisms
differences in the number of bones prove species have separate origins
6
how does the course approach misinformation
seminars focused on science communication and critiquing misinformation
by encouraging students to trust their intuitio over facts
by promoting conspiracy theories
by avoiding controversial topics
7
in a clinical study, what is the purpose of the control group
to ensure that only the dependent variable changhes during the study
to recieve a placebo or no treatment, serving as a baseline for comparison
to guarantee statistical significance in the results
to measure the effect of random chance on the study outcome
8
what is the main limitation of observational studies in epidemiology
they always lead to biased results
they can only establish correlations but not causation
they can easily establish both correlation and causation
they require randomization to minimize bias
9
what is Linnaean taxonomy an who developed it
system of classifying organsims based on genetic similarity charles darwin
a classification system based on physical characteristic carl linnaeus
a theory about natural selection carl linnaeus
system of classifying organisms based on evolutionary history gregor mendel
10
what is emphasized as important for academic success in the course
memorizing every fact presented
relying solely on textbooks without attending seminars
avoiding all lectures
active engagement and understanding of concepts over route memorization
11
in an experiment studying the effects of cell phone radiation on cancer risks what is the independent variable
the control group of rats
the male rats used in the experiement
the caner rates in the rats
the radiation ex[posure given to the rats
12
what is the difference between microevolution and macroevolution
microevolution occurs over millions of years, macroevolution is a lifetime
microevolution = genetic mutations, microevolution = physical adaptation
microevolution only occurs in plants, macroevolution occurs in animals
microevolution refers to small changes, macroevolution refers to big change
13
what does the term molecular clock refer to in evolutionary biology
a method for predicting future mutations in a species
a tool for measuring the age of fossils based on their chemical composition
uses DNA similariteis to estimate the time since 2 species shared ancestors
a technique used to measure the lifespan of extinct organisms
14
what role does DNA play in providing evidence for evolution
DNA is not only useful in studying evolutionary relationships
DNA sequences show that all organisms have different origins
DNA is only relevant for studying mutations, not evolution
DNA sequences can be used to construct phylogenetic trees
15
how does a hypothesis become a scientific theory
by passing through the peer review process once
by consistenly holding up against rigorous testing and evidence over time
by being based on anecdotal evidence and personal experiences
by immediately gaining support from the scientific community
16
which scientists work laid foundation for the understanding of heredity
james watson
rosalind franklin
gregor mendel
friedrich miescher
17
what are the three main components of a nucleotide in DNA
a sugar, a phosphate group, and a nitrogenous base
a sugar, a protein, and a nitrogenous base
a sugar, a lipid, and a phosphate group
a phosphate group, a nitrogenous base, and a lipid
18
what is the primary goal of the course
to tecah advanced scientific theories to experts
to demystify science and enhance science literacy among students
to focus on memorization of scientific facts
to introduce political aspects of scientific discovery
19
which historical figure challenged the geocentric view of the world in 1610
Darwin
Galileo
Newton
Einstein
20
what was the signifcance of Watson and Cricks double helix model of DNA
it revealed the exact sequence of nucleotides in human DNA
it showed how proteins carry genetic information
it explained the chemical composition of DNA
it provided a mechanism for DNA replication and genetic inheritance
21
which of the following advancements was made possible by the discovery of DNA structure
all of the above
genetic engineering
the human genome project
CRISPR technology
22
what is one key differnece between anecdotal and scientific evidence
scientific evidence is reliable anecdotal evidence is never persuasive
both anecdotal and scientific evidence can be used interchangeably
ancedotal evidence is systematically tested scientific evidence is personal
anecdotal evidence is not falsifiable, scientific evidence is falsifiable
23
which of the following is an example of microevolution
the extinction of the Wolly Mammoth due to environmental changes
the emergence of a new species from a common ancestor
the developement of a vertebrate limb from a fin
the transition of life from water to land
24
which of the following was a key hypothesis in evolutionary thinking
organisms are capable of instantaneous evolution with a single generation
organisms have existed without any change since the beginning of time
organisms change gradually over long periods leading to evolution
both a and c are hypotheses
25
what is one of teh fallibilities of science mentioned
science is alway 100% accurate and never changes
scientists are perfect and always reach the same conclusions
science never has any checks and balances
biases and prior beliefs can affect scientific outcomes
26
what concept emphasizes sciences ability to improve over time
the laws of thermodynamics
the idea of static universe
the structure of scientific revoutions
theory of relativity
27
which tool did rosalind franklin use to reveal the helical structure of DNA
electron microscopy
gel electrophoresis
X-ray crystallography
light microscopy
28
How is science described in terms of its process
As a creative, iterative, and evolving process
As completely free from human errors
As a purely theoretical exercise with no practical outcomes
As a linear and final process with no room for change
29
what does the peer review process aim to achieve in scientific research
to turn hypotheses directly into scientifc theories
to test personal experiences for credibility
validate and enhance the credibility of scientific result for publication
to ensure research findings kept confidential
30
what are transitional fossils, and why are they important
fossils that exist only in specific locations on earth
fossils that show the exact moment a species became instinct
fossils of organisms that have no known descendants
fossils that provide evidence of signifcant evolutionary transitions
31
what role does science play in society according to the course
science is a foundation for critical thinking and problem-solving
science only focuses on small, isolated problems
science is irrelevant to societal progress
sciences relevance is dimimishing in the modern world
32
what is the structural shape of DNA as discovered in the 1950's
double helix
double ladder
triple helix
single chain
33
what key experiement in 1928 demonstrated that DNA could be transferred between bacteria, leading to transformation
Chargaff's base pairing experiment
Griffiths experiment
Mendels experiments with pea plants
Avery's DNA isolation experiment
34
what is the difference between a hypothesis and a scientific theory
a theory is tested through experiments, while a hypothesis does not testing
a hypothesis is always correct, while a theory is not
a hypothesis is not yet tested, a theory is well-tested
there is no difference between a hypothesis and a theory
35
what is chargaffs rule regarding the relationship between nitrogenous bases in DNA
there is no fixed relationship between the nitrogenous bases in DNA
the amount of adenine = guanine and thymine = cytosine
all four nitrogenous bases are present in equal amounts
the amount of adenine = thymine and the amount of guanine = cytosine
36
Which of the following best describes the scientific method
a rigid framework applicable to all scientific disciplines
a dyunamic and flexible process that adapts to different inquiries
a personal inquiry that focuses solely on individual experiences
a linear sequence of steps that must be followed in order
37
what topics does the course cover to enhance science literacy
fictional scientific concepts and myths
sports and entertainment
history and philosophy of science
cancer, COVID, diets, DNA, evolution and climate change
38
how do fossils contribute to the understanding of evolution
fossils are only useful for identifying climate change
they provide evidence that species have remianed unchanged over time
fossils cannot be used to determine evolutionary times
they provide physical evidence of extinct organisms and show evolution
39
why is diversity important in science
it allows scientists to specialize in narrow fields only
it reduces bias and leads to better scientific outcomes
it complicates the research process unnecessarily
it only matters in non-scientific fields
40
what is the central idea expressed by theodosius dobzhansky's quote about evolution
evolution explains the complexity of chemical reactions in the cells
evolution is the central concept in the diveristy of life
evolutionary theory is irrelevant to the study of modern biology
evolution only applies to changes in the environment, not organisms

Understanding Biology Midterm 1 Flashcards | StudBud