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Intro to Biology Straighterline Exam Questions and Answers 2024/2025( A+ GRADED 100% VERIFIED).
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Intro to Biology Straighterline Exam Questions and Answers 2024/2025( A+ GRADED 100% VERIFIED).
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Intro to Biology StraighterlineOrgans are composed of tissues, which are composed of cells. This is an example of which
characteristic of life? - ANS Living things have levels of hierarchical organization.
Nutrient molecules are used to build cellular structures or for energy. This best represents which
characteristic of life? - ANS Living things acquire materials and energy from the environment.
The smallest unit that has all of the characteristics of life is the - ANS cell.
The blueprints for structural organization and metabolism are contained in____, and the
offspring receive copies of these instructions___. - ANS DNA; from the parent
If a new anti-cancer drug is found to be effective in initial tests with mice, what might
researchers conclude? - ANS The drug is effective in the mouse model; it must still be tested in
humans.
True or false? Science technology is a basis for all ethical or moral decisions. - ANS False
True or false? Science technology has brought about life-improving discoveries, such as
antibiotics. - ANS True
True or false? Science technology helps us to understand the causes of cancer. - ANS True
True or false? Science technology may ease the feeding of the world population by producing
new plant strains. - ANS True
True or false? Scientific experimentation may make use of a model instead of an actual subject.
- ANS True
Technology is the______. - ANS application of scientific knowledge for a practical purpose.
Which of the following is a potential consequence if people stop using technology in the
agriculture industry?
a) There could be a significant decrease in the amount of food produced.
b) There would be a collapse of many of the terrestrial ecosystems on Earth.
c) The extinction of the top level species that reside in the communities around the agricultural
land.
d) The amount of food produced would increase.
e) None of these consequences will occur if people stop using technology in the agriculture
industry. - ANS a) There could be significant decrease in the amount of food produced.
,Corn belongs to the kingdom... - ANS Plantae
You have discovered a previously unknown organism. It is multicellular, with a filamentous form,
and absorbs food from its environment. Upon microscopic examination, you see that the cells
have nuclei. How would you classify this organism? - ANS kingdom Fungi
Which domain contains organisms that are adapted to life in harsh environments? - ANS
domain Archaea
Which of the following is one of the domains of life?
a) Animalia
b) Eukarya
c) Molds
d) Protista
e) Fungi - ANS b) Eukarya
Which classification category contains the closest related group of organisms? - ANS genus
low hemoglobin levels despite high elevation in Tibetan populations over generations is an
example of ______ - ANS natural selection at work in humans
Which level of biological organization is composed of several tissues? - ANS organ
A physician specializes in surgery involving the following group of organs: mouth, esophagus,
stomach, and intestines. Overall, what is the highest level of organization that this physician is
specialized in? - ANS organ system
When comparing energy and chemicals in an ecosystem how many times do chemicals and
energy flow through? - ANS chemicals cycle over and over again, but energy flows through
once
All the organisms of various species living within a given area constitute a - ANS community.
True or false? Chemicals are recycled in an ecosystem. - ANS True
True or false? Energy flows through an ecosystem, with some being lost as heat. - ANS True
True or false? Some organisms produce food used by themselves and others. - ANS True
True or false? There is a community of organisms, but no non-living components. - ANS False
True or false? Climate is the main factor that determines where an ecosystem will be located. -
ANS True
,The most important factor that determines where major ecosystems are located on the globe is -
ANS climate.
An ecosystem generally requires solar energy, nutrients, decomposers, consumers, and _____.
- ANS producers.
biodiversity is adversely affected as humans have destructive effects on ecosystems as - ANS
the human population size increases
The term "biodiversity" refers to - ANS the total number of species, variation of species and the
ecosystems in which they live.
All the banded sunfish (Enneacanthus obesus) in a pond would comprise a - ANS population.
Ever since the antibiotic drug penicillin was discovered in 1928, the incidence of resistant
bacteria has steadily increased as a direct result of - ANS natural selection.
Nutrient molecules are used to build cellular structures for energy. This best represents which
characteristic of life? - ANS Living things acquire materials and energy from the environment.
An important source of genetic variation is provided by: - ANS mutation
Technology is the __________. - ANS the application of scientific knowledge for practical
purpose.
Which classification category includes the most species? - ANS kingdom
What is the proper sequence of classification categories from least to most inclusive? - ANS
species, genus, family, order, class, phylum, kingdom, domain
True or false? Common names may include different sets of organisms. - ANS True
True or false? Scientific names can be known and recognized by all scientists throughout the
world. - ANS True
True or false? To recognize an organism in the literature by its common name, a scientist would
have to know multiple languages. - ANS True
True or false? The scientific name begins to tie the organism into related groups. - ANS True
True or false? The common name clearly identifies an organism as unique. - ANS False
The three major domains of life are - ANS archaea, bacteria, eukaryotes.
, Which domains contain organisms that lack a membrane-bound nucleus? - ANS Archaea and
Bacteria
What is the binomial name of human beings? - ANS Homo sapiens
What is the sequence for different levels of biological organization from the smallest and
simplest to the largest and most complex? - ANS cells-tissues-organs-organ systems-organism
The layer where organisms can exist on the surface of the earth is the - ANS biosphere.
Which of the following is of least importance when concerning the preservation of ecosystems?
a) Ecosystem preservation maintains the status of species in their current state.
b) Many different organisms perform services that ensure our continued existence.
c) Humans derive medicines, food, and many important materials from functioning ecosystems.
d) Preservation of ecosystems allows humans to exploit as many resources as possible.
e) It is estimated that possibly 400 species become extinct each day due to activities of humans.
- ANS d) Preservation of ecosystems allows humans to exploit as many resources as possible.
A community of organisms along with their physical environment constitutes a(n) - ANS
ecosystem.
The mathematical comparison between your experimental results and a known value is known
as a - ANS percent error.
Data samples in which you expect no change to occur are _____. - ANS negative controls.
Why are volumetric measurements defined as a "cubed" unit? - ANS Because three individual
units are multiplied together.
While bird watching, Carl hypothesized he could identify 73 different types of birds in one day.
He actually identified 65 different types of birds. What was his percent error? - ANS 12%
How do you calculate percent error? - ANS Actual-Guessed over Actual x 100
True or false? A graph is a visual representation of the relationship between the independent
variable and the control. - ANS False
True or false? 86014265 in scientific notation is 8.6014265 x 10^7 - ANS True
What is the volume of a pool which is 20.00 meters long, 12.00 meters deep, and 13.00 feet
wide? (1 meter=3.28 feet).
a) 95121 cm^3
b) 9.51 cm^3
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