Deck 1: Introduction: Biology Today

Question 1

What name is given to the functional compartments of a cell?

A)genomes
B)nuclei
C)genes
D)organelles

Answer 1

D

Question 2

Relative to prokaryotic cells,eukaryotic cells are usually ________.

A)larger and more complex
B)smaller and simpler
C)larger and equally complex
D)smaller and more complex

Answer 2

A

Question 3

What are the two main processes upon which ecosystems depend?

A)speciation and evolution
B)nutrient recycling and energy flow
C)decomposition and nutrient recycling
D)sunlight and photosynthesis

Answer 3

B

Question 4

What is a gene?

A)a type of eukaryotic cell
B)an organelle that houses DNA
C)a type of prokaryotic cell
D)a unit of inheritance

Question 5

Which of the following is a producer?

A)oak tree
B)earthworm
C)sun
D)cat

Question 6

More than half of all known species are ________.

A)plants
B)insects
C)bacteria
D)vertebrates

Question 7

Humans are composed of ________ cells.

A)bacterial
B)eukaryotic
C)plant
D)prokaryotic

Question 8

Which domain(s)consist(s)of prokaryotic cells?

A)Bacteria only
B)Eukarya only
C)Archaea and Eukarya
D)Bacteria and Archaea

Question 9

Which of the following is NOT a property of life?

A)Populations of organisms rarely change over time.
B)Living things exhibit complex but ordered organization.
C)Organisms take in energy and use it to perform all of life's activities.
D)Organisms reproduce their own kind.

Question 10

In what way(s)is the science of biology influencing and changing our culture?

A)by helping us understand the relevance of evolution to human health
B)by revealing how mutations in genes can lead to disease
C)by providing new tools for forensic investigations
D)all of the above

Question 11

The DNA of a eukaryotic cell is found within the ________.

A)archaea
B)nucleus
C)prokaryotic cell
D)insulin

Question 12

Which of the following is NOT recycled but is lost from ecosystems?

A)nitrogen
B)energy
C)magnesium
D)carbon

Question 13

The human genome consists of about ________ chemical letters.

A)300,000
B)1 million
C)3 billion
D)300 billion

Question 14

Humans are ________.

A)producers
B)producers and consumers
C)consumers
D)producers and decomposers

Question 15

Which of the following structures can perform all the activities required for life?

A)DNA molecules
B)cells
C)organelles
D)nuclei

Question 16

What are eukaryotic genes composed of?

A)RNA
B)organelles
C)RNA and DNA
D)DNA

Question 17

Which kingdom of Eukarya consists primarily of unicellular organisms?

A)Plantae
B)Bacteria
C)Fungi
D)Protista

Question 18

What is biology?

A)the scientific study of life
B)the scientific study of the environment
C)the scientific study of DNA
D)the scientific study of ecosystems

Question 19

Taxonomy is the ________.

A)study of cells
B)naming and classifying of species
C)study of organisms and their interaction with the environment
D)study of genes

Question 20

How does taxonomy assist biologists?

A)by providing easily remembered scientific names for organisms
B)by categorizing diverse items into smaller and smaller numbers of groups
C)by reducing life to its smallest common denominator,the cell
D)all of the above

Question 21

A newly discovered multicellular organism obtains food by digesting dead organisms.Such an organism is most likely a member of the kingdom ________.

A)Plantae
B)Fungi
C)Protista
D)Animalia

Question 22

You try to start your car,but it does not start.Which of these is a prediction?

A)My car's battery is dead.
B)If I recharge the battery,then my car will start.
C)My car is too old to function properly.
D)What is wrong with my car?

Question 23

Antibiotic resistance evolves in bacteria when ________.

A)the presence of antibiotics favors bacteria that already have genes for resistance
B)farmers do not use enough antibiotics in animal feed
C)the antibiotics create resistance genes in bacteria
D)none of the above

Question 24

Which of the following are the proper components of the scientific method?

A)experiment,conclusion,application
B)question,observation,experiment,analysis,prediction
C)observation,question,hypothesis,prediction,experiment,results,conclusion
D)observation,question,opinion,conclusion,hypothesis

Question 25

Which of these would be a valid scientific hypothesis?

A)Human history is determined by a series of supernatural events.
B)Humans should help in the conservation of other animal species.
C)Humans are controlled by forces beyond our understanding.
D)Humans and bacteria share a common genetic code.

Question 26

Regulation in biological systems depends on feedback,which is an example of information flow.When diabetes destroys insulin-producing cells,what information flow is disrupted?

A)The body is unable to send signals that indicate the amount of sugar in the blood.
B)Cells in the bladder are no longer able to send signals when the bladder fills.
C)The pancreas is unable to produce enzymes to break down proteins.
D)Appetite signals no longer regulate feeding.

Question 27

The branch of biology that explains both the diversity and the unity of life is ________.

A)evolution
B)microbiology
C)taxonomy
D)genetics

Question 28

How do hypotheses differ from theories?

A)Theories are more comprehensive than hypotheses.
B)Theories must be testable; hypotheses do not need to be testable.
C)Hypotheses are educated guesses,and theories are tentative explanations.
D)Hypotheses are derived from experimentation,whereas theories are derived from observation.

Question 29

What does "adaptation" mean in an evolutionary context?

A)the way an individual's body adjusts to its environment
B)the accumulation of favorable variations in a population over time
C)the ability of organisms to alter their appearance under changing environmental conditions
D)all of the above

Question 30

Which of these is required for natural selection to occur?

A)inheritance
B)unequal reproductive success
C)individual variation
D)all of the above

Question 31

You try to start your car,but it does not start.Which of these is a hypothesis?

A)My car's battery is dead.
B)If I recharge the battery,then my car will start.
C)My car is too old to function properly.
D)What is wrong with my car?

Question 32

Discovery science is primarily based on ________.

A)hypothesis testing
B)deduction
C)experimentation
D)observation

Question 33

What accounts for the different breeds of domesticated dogs?

A)overproduction
B)natural selection
C)competition
D)artificial selection

Question 34

Which of these is most closely associated with Darwin?

A)energy flow
B)ecosystem structure
C)the three domains of life
D)natural selection

Question 35

Members of the kingdom Plantae differ from members of the other kingdoms of Eukarya in that most members of the kingdom Plantae ________.

A)are decomposers
B)are unicellular
C)are consumers
D)produce their own food

Question 36

A hypothesis is a(n)________.

A)tentative answer to a question
B)guess
C)observation
D)theory

Question 37

Which of these statements is CORRECT?

A)Scientific ideas are subjected to repeated testing.
B)Science can be used to prove or disprove the idea that deities or spirits cause earthquakes and other natural disasters.
C)Science does not require observations that other people can confirm.
D)Only discovery science can lead to important conclusions about nature.

Question 38

Over a span of two decades,scientists measured changes in the beak size of a population of Galápagos ground finches.This ________.

A)provided evidence of natural selection in action
B)is an example of artificial selection
C)is an example of overproduction
D)led Darwin to his theory of evolution through natural selection

Question 39

Science is ________.

A)the inquiry-based effort to describe and explain nature
B)the search for truth
C)an organized set of principles for how to behave ethically and morally
D)all of the above

Question 40

What is the difference between discovery science and hypothesis-driven science?

A)Discovery science "discovers" new knowledge,whereas hypothesis-driven science does not.
B)Discovery science is based on deductive reasoning,whereas hypothesis-driven science is based on inductive reasoning.
C)Discovery science is mostly about describing nature,whereas hypothesis-driven science tries to explain nature.
D)Discovery science involves predictions about outcomes,whereas hypothesis-driven science involves tentative answers to specific questions.

Question 41

Which of the following is the hypothesis of this case study?

A)Male collared lizards exhibit color variation.
B)Dull-colored males are less likely to be eaten by predators.
C)A function of male coloration is to attract females.
D)Males prefer brightly colored females.

Question 42

In the process of evolution by natural selection illustrated in the accompanying figure,which of the following is the mechanism or agent of natural selection?

A)artificial selection
B)selective breeding
C)selective predation
D)genetic drift

Question 43

Which of the following conclusions can be drawn from the data?

A)Dull-colored females are more likely to choose dull-colored males.
B)Dull-colored males are likely to choose dull-colored females.
C)Brightly colored males are stronger and more fertile than dull-colored males
D)Females do not always choose brightly colored males.

Question 44

Using the branching tree of life for bears depicted in the accompanying figure,choose from among the following bear species the one that is most distantly related to the sun bear.

A)brown bear
B)sloth bear
C)spectacled bear
D)giant panda

Question 45

"Male collared lizards show considerable color variation." This is a(n)________.

A)hypothesis
B)conclusion
C)observation
D)result

Question 46

Is it reasonable to conclude (i.e.,is it supported by the data)that female collared lizards prefer more brightly colored male lizards over dull-colored males?

A)Yes,this conclusion is supported by the data.
B)No,this conclusion is not supported by the data.
C)The data do not clearly indicate a preference one way or the other.
D)None of the above choices are correct.

Question 47

If the proportion of brightly colored male lizards increased steadily in future generations,this would ________.

A)reject the original hypothesis
B)be an example of evolution due to natural selection
C)illustrate the relationship between structure and function
D)demonstrate the flow of energy through a system

Question 48

Dull-colored males were used in this experiment to ________.

A)serve as a comparison (control)group to the brightly colored males
B)be sure that females could recognize the gender of the other lizards
C)give the experiment more trials so that the data would be more persuasive
D)be sure all females had a male with which they could mate

Question 49

Which of these results would you predict to occur if climate change results in increased warming global temperatures?

A)Species competition will result in slower evolution in the tropics.
B)The tree line (at which it is too cold for trees to grow)moves toward the north and south poles.
C)Winters will be longer toward the poles.
D)Land animals will suffer fewer consequences than marine animals.

Question 50

Information flow in biological systems is necessary for negative or regulative feedback to operate.Which of these examples does NOT involve flow of information providing feedback?

A)Heat receptors send signals to promote sweating.
B)Low blood sugar causes the liver to convert starch to sugar to be released in the blood.
C)Drought kills many trees.
D)Bacterial genes for breaking down lactose are activated in the presence of lactose.