1.1 The Study of Life
The term biosphere refers to the parts of Earth that contain
living things.
The maintenance of constant internal conditions in an organism is known as
homeostasis
a testable educated guess
To view details of cell structure, you would want to use the following microscope
An electron microscope
Knowledge of biology can promote advances by helping all people make
informed decisions
The basic unit of life is
the cell
At all levels of life, when related parts interact to form a whole they form a
a system
In an experiment, the condition that is manipulated by a scientist is the
independent variable
An injury that affects a ligament rather than a bone is likely to be examined using
MRI
The use and application of living things and biological processes is known as
biotechnology
An individual living thing is called a(n)
organism
Which aspects of life on Earth are accounted for by evolution?
a. diversity and unity
b. interaction and conflict
c. lack of genetic and physical change
d. divergence of structure and function
a. diversity and unity
At which stage of scientific inquiry would scientists find out if their hypotheses were supported by their data?
a. observing
b. testing hypotheses
c. analyzing data
d. evaluating results
c. analyzing data
a segment of DNA that codes for a particular trait
Which of the following is an example of transgenic organisms?
a. bacteria that produce human insulin
b. microorganisms that produce cheese
c. yeast used to produce bread
d. algae that produce hydrogen gas
a. bacteria that produce human insulin
Which of these characteristics is shared by all living things?
a. They are made up of one or more cells.
b. They make their own chemical energy.
c. They have similar responses to light.
d. They reproduce when one cell divides into two.
a. They are made up of one or more cells.
Which statement best explains why the shape of teeth differs according to the diet of a species?
a. Individual parts must work together.
b. Organisms interact with other organisms.
c. Structure and function are related in biology.
d. Organisms must maintain homeostasis.
c. Structure and function are related in biology.
Which of the following is an important characteristic of a scientific theory?
a. proven by more than one scientist
b. unchanged by new evidence
c. accepted by the public
d. supported by much evidence
d. supported by much evidence
Complex studies, such as those that investigate disease transmission in humans, often use which of the following methods?
a. multiple lab experiments
b. computer modeling
c. magnetic resonance imaging
d. human testing
b. computer modeling
Biotechnology raises ethical questions, primarily concerning the
a. safety of eating transgenic plants.
b. wisdom of continuing to use technology.
c. ways in which knowledge should be used.
d. best use of funds for biological research.
c. ways in which knowledge should be used.
Which phrase best describes Earth's biodiversity?
a. greater in consistently warm areas
b. greater toward Earth's poles
c. greater according to energy needs
d. greater where temperatures are most variable
a. greater in consistently warm areas
A beneficial inherited trait that is passed on to future generations is a(n)
adaptation
One way in which experimental research differs from observational research is that only experimental research can
a. test a hypothesis.
b. produce scientific results.
c. support a theory.
d. show cause and effect.
d. show cause and effect.
Data mining contributes to the field of genomics by finding
a. specimens on which to experiment.
b. images of organisms.
c. models of complex systems.
d. patterns within data.
d. patterns within data.
Define transgenic organism
organisms that have genes from more than one species, or have altered copies of their own genes