Biology Exam Chapter 1 MC

Biology is the study of
a. animals
b. plants and animals
c. all living things
d. energy transfer
A short segment of DNA that contains instructions for the development of a single trait of an organism is known as a
a. DNA loop
b. gene
c. library
d. membrane
As the cells in a multicellular organism multiply, they become different from each other in a process called
a. sexual reproduction
b. descent with modification
c. photosynthesis
d. differentiation
Homeostasis refers to the
a. organization of cellular structures
b. stable level of internal conditions in organisms
c. organized structure of crystals
d. destruction of tropical rain forests
The theory of evolution by natural selection states that
a. organisms with certain favorable traits are better able to reproduce
b. all individuals are able to live and reproduce to the same degree
c. individuals do not compete for resources such as food
d. individuals evolve but populations of organisms remain the same
In most multicellular organisms, cells and groups of cells are organized by their
a. function
b. size
c. color
d. energy needs
The sum of all of the chemical processes that occur in an organism is called
a. growth
b. metabolism
c. development
d. homeostasis
Nonliving things grow by
a. cell division
b. cell enlargement
c. increasing the amount of energy they use
d. accumulating more of the material they are made of
The process by which an adult organism arises is called
a. fertilization
b. metabolism
c. development
d. aging
Many of the organisms living today have not been identified because they are
a. very large
b. extinct
c. not composed of cells
d. residents of deep ocean waters
A field biologist who studies the behavior of birds in a rain forest most likely collects data through
a. experimenting
b. modeling
c. observing
d. inferring
Constructing a graph is an example of
a. measuring
b. organizing data
c. observing
d. prediciting
Of the following steps in a scientific investigation, the last to be done is usually
a. experimenting
b. observing
c. producing a model
d. hypothesizing
A statement that explains observations and can be tested is called
a. a hypothesis
b. an inference
c. a theory
d. a model
A visual, verbal, or mathematical explanation that is supported by data is called
a. a hypothesis
b. an inference
c. a theory
d. a model
The ability of a microscope to show details clearly is called
a. enlargement
b. magnification
c. reduction
d. resolution
One limitation of the scanning electron microscope is that it cannot be used to
a. examine specimens smaller than cells
b. view living specimens
c. produce an enlarged image of a specimen
d. produce an image of the surface of a specimen
A microscope with a 10x ocular lens and a 25x objective lens has a total power of magnification equal to
a. 2.5x
b. 35x
c. 250x
d. 2500x
The SI base unit for time is the
a. second
b. minute
c. hour
d. day
The SI prefix that represents 1000 times the base unit is
a. deci
b. centi
c. kilo
d. micro
To maintain their internal organization, all living things must have a constant supply of
a. oxygen
b. carbon dioxide
c. water
d. energy
Reproduction involves the transfer of genetic information from
a. autotroph to heterotroph
b. parents to offspring
c. offsprings to parents
d. unicellular organisms to multicellular organisms
The stable internal environment maintained by living things is called
a. homeostasis
b. differentiation
c. adaptation
d. interdependence
The most important driving force in evolution is
a. natural selection
b. heterotrophy
c. autotrophy
d. asexual reproduction
The scientific process that involves using the five senses is
a. inference
b. analyzing
c. modeling
d. observation
Data that are quantitative are always
a. described in words
b. represented by numbers
c. duplicated for verification
d. the most accurate kind of data
A hypothesis is a statement that
a. is always true
b. is usually true
c. is the same as a theory
d. can be tested
A broad and comprehensive statement of what is believed to be true is a
a. model
b. theory
c. prediction
d. inference
A small part used to represent an entire population is called a
a. portion
b. tract
c. statistic
d. sample