A
Which characteristic does NOT apply to all living things?
A. the ability to respond to stimuli
B. the ability to maintain homeostasis
C. the ability to reproduce by dividing
C- The ability to reproduce by dividing
Which microscope uses electrons to study the surface of an object?
A. SEM
B. TEM
C. compound microscope
A. SEM
For most organisms, the energy they use originally came to Earth from the ______.
Sun.
The invention of __________ enabled people to see details of living things that cannot be seen with the unaided eye.
microscopes
Living things that are made of only one cell are called _____________organisms.
unicellular
When Linnaeus grouped organisms into kingdoms, he also developed a system for naming organisms. His system of ___________ ____________ gives each organism a two-word scientific name, such as Ursus arctos for a brown bear.
binomial nomenclature
Living things that are made of two or more cells are called _____________organisms.
multicellular
Each species has its own _____________, which is the same all over the world.
scientific name
_________ _________ microscopes usually are used to study the surface of an object.
Scanning electron
_________ scientists use microscopes to study evidence from crime scenes.
Forensic
An organism’s ability to maintain steady internal conditions when outside conditions change is called _____________. Maintaining these conditions ensures that cells can ______________.
Homeostasis
Function
An organism’s ability to maintain steady internal conditions when outside conditions change is called _____________. Maintaining these conditions ensures that cells can ______________.
In a scientific name, the first word is the organism’s ____________ genus, such as Ursus.
genus
Some examples of external stimuli are ________ and ___________.
light and temperature.
Carolus Linnaeus grouped all organisms into two main ____________.
kingdoms
Cells continuously use ___________ to transport substances, make new cells, and perform chemical reactions.
energy
The steel industry examines steel for_________ with the use of microscopes.
impurities
Identify one discovery made possible by the invention of the microscope.
The microscope allowed people to observe features of living things they had not been able to observe before. For example, the invention of the microscope led to the discovery of cells. The discovery of cells enabled people to further explore and classify living things.
_______________ ___________ use a magnetic field to focus a beam of electrons through an object or onto an object’s surface.
Electron microscopes
A(n)____________ is a group of organisms that have similar traits and are able to produce fertile offspring.
species
In 1969 an American biologist proposed a five-kingdom system for classifying organisms that included kingdoms Monera, Protista, _____________, Fungi, and Animalia.
Plantae
. A(n) ________ is a branched diagram that shows the relationships among organisms. New characteristics appear before each ___________.
cladogram
branch
The current system used for classifying organisms is called __________.
systematics
What are some different ways organisms can be classified?
Organisms can be classified according to size, structures, cell type, habitat, the way an organism obtains food and energy, structure and function of its features, common ancestry, or some combination of these factors.
Organisms are classified into one of three domains—Bacteria, __________, and _________—and then into one of ______ kingdoms.
Bacteria, Archaea, and Eukarya—and then into one of six kingdoms.
_____________ uses all the information that is known about organisms to classify them.
Systematics