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WorksheetsBiology in the 21st Century
Total questions: 20
Worksheet time: 10mins
At all levels of life, when related parts interact to form a whole they form a
biosphere
species
cell
system
Which statement best explains why the shape of teeth differs according to the diet of a species?
Individuals parts must work together.
Organisms interact with other organisms.
Structure and function are related in biology.
Organisms must maintain homeostasis.
The maintenance of constant internal conditions in an organism is known as
homeostasis.
negative feedback.
structure specialization.
adaptation.
Which aspects of life on Earth are accounted for by evolution?
diversity and unity
interaction and conflict
lack of genetic and physical change
divergence of structure and function
A beneficial inherited trait that is passed on to future generations is a(n)
stimulus.
adaptation.
system.
homeostatic mechanism.
Which word best describes a scientific hypothesis?
provable
theoretical
testable
quantifiable
At which stage of scientific inquiry would scientists find out if their hypotheses were supported by their data?
observing
testing hypotheses
analyzing data
evaluating results
In an experiment, the condition that is manipulated by a scientist is the
independent variable.
dependent variable.
contant.
control condition.
Which of the following is an important characteristic of a scientific theory?
proven by more than one scientist
unchanged by new evidence
accepted by the public
supported by much evidence
One way in which experimental research differs from observational research is that only experimental research can
test a hypothesis.
produce scientific results.
support a theory.
show cause and effect.
An electron microscope would be the best choice for viewing
live bacteria.
human ligaments.
details of cell structure.
a person's brain activity.
An injury that affects a ligament rather than a bone is likely to be examined using
magnetic resonance imaging.
x-rays.
computer modeling.
transmission electron microscopy.
Complex studies, such as those that investigate disease transmission in humans, often use which of the following methods?
multiple lab experiments
computer modeling
magnetic resonance imaging
human testing
Which phrase best defines a gene?
inherited trait
basic unit of life.
segment of DNA
slice of specimen
Data mining contributes to the field of genomics by finding
specimens on which to experiment.
images of organisms.
models of complex systems.
patterns within data.
Knowledge of biology can promote advances by helping all people make
strong opinions.
informed decisions.
profitable products.
individual values.
The use and application of living things and biological processes is known as
medical research
human biology.
epidemiology.
biotechnology.
Which of the following is an example fo transgenic organisms?
bacteria that produce human insulin
microorganisms that produce cheese
yeast used to produce bread
algae that produce hydrogen gas
Biotechnology raises ethical questions, primarily concerning the
safety of eating transgenic plants.
wisdom of continuing to use technology.
ways in which knowledge should be used.
best use of funds for biological research.
Which is a true statement about biology's unanswered questions?
unlikely to change anything
many remain unasked
few existed in the past
rarely depend on technology.
