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Biological Scientists
- Nature of the Work
- Working Conditions
- Training, Other Qualifications, and Advancement
- Employment
- Job Outlook
- Earnings
Significant Points
- A Ph.D. degree usually is required for independent research, but a master’s degree is sufficient for some jobs
in applied research or product development; a bachelor’s degree is adequate for some nonresearch jobs. - Doctoral degree holders face competition for basic research positions; holders of bachelor’s or master’s
degrees in biological science can expect better opportunities in nonresearch positions. - Biotechnological research and development will continue to drive employment growth.
Biological scientists study living organisms and their relationship to their environment. They research
problems dealing with life processes and living organisms. Most specialize in some area of biology, such as
zoology the study of animals or microbiology the study of microscopic organisms.
Many biological scientists work in research and development.
Some conduct basic research to advance knowledge of living organisms, including viruses, bacteria, and other infectious agents.
Basic biological research continues to provide the building blocks necessary to develop solutions to human health problems and to
preserve and repair the natural environment. Biological scientists mostly work independently in private industry, university,
or government laboratories, often exploring new areas of research or expanding on specialized research started in graduate school.
Those who are not wage and salary workers in private industry typically submit grant proposals to obtain funding for their
projects. Colleges and universities, private industry, and Federal Government agencies such as the National Institutes of
Health and the National Science Foundation contribute to the support of scientists whose research proposals are determined
to be financially feasible and to have the potential to advance new ideas or processes.
Biological scientists who work in applied research or product development use knowledge provided by basic research to
develop new drugs, treatments, and medical diagnostic tests; increase crop yields; and protect and clean up the environment
by developing new biofuels. They usually have less autonomy than basic researchers to choose the emphasis of their research,
relying instead on market-driven directions based on their firms’ products and goals. Because biological scientists doing
applied research and product development in private industry may be required to describe their research plans or results to
nonscientists who are in a position to veto or approve their ideas, they must understand the potential cost of their work
and its impact on business. Scientists often work in teams, interacting with engineers, scientists of other disciplines,
business managers, and technicians. Some biological scientists also work with customers or suppliers and manage budgets.
Those who conduct research usually work in laboratories and use electron microscopes, computers, thermal cyclers, and a
wide variety of other equipment. Some conduct experiments using laboratory animals or greenhouse plants. This is particularly
true of botanists, physiologists, and zoologists. For some biological scientists, research also is performed outside of
laboratories. For example, a botanist might do research in tropical rain forests to see what plants grow there, or an ecologist
might study how a forest area recovers after a fire. Some marine biologists also work outdoors, often on research vessels from
which they study various marine organisms such as marine plankton or fish.
Some biological scientists work in managerial or
administrative positions, usually after spending some time doing research and learning about a particular firm, agency, or project.
They may plan and administer programs for testing foods and drugs, for example, or direct activities at zoos or botanical gardens.
Some work as consultants to businesses or to government agencies.
Recent advances in biotechnology and information technology are transforming the industries in which biological scientists work.
In the 1980s, swift advances in basic biological knowledge related to genetics and molecules spurred growth in the field
of biotechnology. Biological scientists using this technology manipulate the genetic material of animals or plants,
attempting to make organisms more productive or resistant to disease. Research using biotechnology techniques, such
as recombining DNA, has led to the production of important substances, including human insulin and growth hormone.
Many other substances not previously available in large quantities are starting to be produced by biotechnological
means; some may be useful in treating cancer and other diseases. Today, many biological scientists are involved in
biotechnology. Those who work on the Human Genome Project isolate genes and determine their function. This work
continues to lead to the discovery of the genes associated with specific diseases and inherited traits, such as
certain types of cancer or obesity. These advances in biotechnology have created research opportunities in almost
all areas of biology, with commercial applications in the food industry, agriculture, and environmental remediation,
and in other emerging areas such as DNA fingerprinting.
Most biological scientists are further classified by
the type of organism they study or by the specific activity they perform, although recent advances in the
understanding of basic life processes at the molecular and cellular levels have blurred some traditional classifications.
Aquatic biologists study micro-organisms, plants, and animals living in water. Marine biologists study salt water
organisms, and limnologists study fresh water organisms. Much of the work of marine biology centers on molecular
biology, the study of the biochemical processes that take place inside living cells. Marine biologists sometimes are
mistakenly called oceanographers, but oceanography is the study of the physical characteristics of oceans and the ocean floor.
Biochemists study the chemical composition of living things.
They analyze the complex chemical combinations and reactions involved in metabolism, reproduction, growth, and heredity.
Biochemists and molecular biologists do most of their work in biotechnology, which involves understanding the complex chemistry of life.
Botanists study plants and their environment. Some study all aspects of plant life, including algae, fungi,
lichens, mosses, ferns, conifers, and flowering plants; others specialize in areas such as identification and classification
of plants, the structure and function of plant parts, the biochemistry of plant processes, the causes and cures of plant
diseases, the interaction of plants with other organisms and the environment, and the geological record of plants.
Microbiologists investigate the growth and characteristics of microscopic organisms such as bacteria, algae, or fungi.
Most microbiologists specialize in environmental, food, agricultural, or industrial microbiology; virology (the study of viruses);
immunology (the study of mechanisms that fight infections); or bioinformatics (the process of integrating molecular biology
and information science). Many microbiologists use biotechnology to advance knowledge of cell reproduction and human disease.
Physiologists study life functions of plants and animals, both in the whole organism and at the cellular or
molecular level, under normal and abnormal conditions. Physiologists often specialize in functions such as growth,
reproduction, photosynthesis, respiration, or movement, or in the physiology of a certain area or system of the organism.
Biophysicists study the application of principles of physics, such as electrical and mechanical energy and
related phenomena, to living cells and organisms.
Zoologists and wildlife biologists study
animals and wildlife their origin, behavior, diseases, and life processes. Some experiment with live animals
in controlled or natural surroundings, while others dissect dead animals to study their structure. Zoologists and
wildlife biologists also may collect and analyze biological data to determine the environmental effects of current
and potential use of land and water areas. Zoologists usually are identified by the animal group studied ornithologists (birds),
mammalogists (mammals), herpetologists (reptiles), and ichthyologists (fish).
Ecologists study the relationships among
organisms and between organisms and their environments, examining the effects of population size, pollutants, rainfall, temperature, and altitude.
Using knowledge of various scientific disciplines, ecologists may collect, study, and report data on the quality of air, food, soil, and water.
Biological scientists usually work regular hours in offices or laboratories and usually are not
exposed to unsafe or unhealthy conditions. Those who work with dangerous organisms or toxic substances
in the laboratory must follow strict safety procedures to avoid contamination. Many biological scientists
such as botanists, ecologists, and zoologists take field trips that involve strenuous physical activity and
primitive living conditions. Biological scientists in the field may work in warm or cold climates, in all
kinds of weather. In their research, they may dig, chip with a hammer, scoop with a net, and carry equipment
in a backpack. They also may climb, stand, kneel, or dive.
Marine biologists encounter a variety of working conditions. Some marine biologists work in laboratories;
others work on research ships. Marine biologists who work underwater must practice safe diving while working
around sharp coral reefs and hazardous marine life. Although some marine biologists obtain their specimens
from the sea, many still spend a good deal of their time in laboratories and offices, conducting tests,
running experiments, recording results, and compiling data.
Some biological scientists depend on grant
money to support their research. They may be under pressure to meet deadlines and to conform to rigid grant-writing
specifications when preparing proposals to seek new or extended funding.
Training, Other Qualifications, and Advancement
A Ph.D. degree usually is necessary for independent research, industrial research, and college teaching, as well
as for advancement to administrative positions. A master’s degree is sufficient for some jobs in basic research,
applied research or product development, management, or inspection; it also may qualify one to work as a research
technician or as a teacher in an aquarium. The bachelor’s degree is adequate for some nonresearch jobs.
For example, some graduates with a bachelor’s degree start as biological scientists in testing and inspection
or get jobs related to biological science, such as technical sales or service representatives. In some cases,
graduates with a bachelor’s degree are able to work in a laboratory environment on their own projects, but this is unusual.
Some may work as research assistants, whereas others become biological laboratory technicians or, with courses in education,
high school biology teachers. .
Many with a bachelor’s degree in biology enter medical, dental, veterinary, or other health profession schools.
In addition to required courses in chemistry and biology, undergraduate biological science majors usually study
allied disciplines such as mathematics, physics, engineering, and computer science. Computer courses are essential
because employers prefer job applicants who are able to apply computer skills to modeling and simulation tasks and
to operate computerized laboratory equipment, particularly in emerging fields such as bioinformatics. Those
interested in studying the environment also should take courses in environmental studies and become familiar
with current legislation and regulations. Prospective biological scientists who hope to work as marine
biologists should have at least a bachelor’s degree in a biological or marine science. However, students
should not overspecialize in undergraduate study, as knowledge of marine biology often is acquired in
graduate study. Most colleges and universities offer bachelor’s degrees in biological science, and many
offer advanced degrees. Curriculums for advanced degrees often emphasize a subfield such as microbiology or
botany, but not all universities offer all curriculums. Larger universities frequently have separate departments
specializing in different areas of biological science. For example, a program in botany might cover agronomy,
horticulture, or plant pathology. Advanced degree programs include classroom and fieldwork, laboratory research, and a thesis or dissertation.
Biological scientists with a Ph.D. often take temporary postdoctoral research positions that provide specialized research experience.
Postdoctoral positions may offer the opportunity to publish research findings. A solid record of published research is
essential in obtaining a permanent position involving basic research, especially for those seeking a permanent college
or university faculty position. In private industry, some may become managers or administrators within the field of
biology; others leave biology for nontechnical managerial, administrative, or sales jobs.
Biological scientists should be able to work independently or as part of a team and be able to communicate
clearly and concisely, both orally and in writing. Those in private industry, especially those who aspire to
management or administrative positions, should possess strong business and communication skills and be familiar
with regulatory issues and marketing and management techniques. Those doing field research in remote areas must
have physical stamina. Biological scientists also must have patience and self-discipline to conduct long and detailed research projects.
Biological scientists held about 77,000 jobs in 2004. Slightly more than half of all biological scientists
were employed by Federal, State, and local governments. Federal biological scientists worked mainly for the
U.S. Departments of Agriculture, Interior, and Defense and for the National Institutes of Health. Most of
the rest worked in scientific research and testing laboratories, the pharmaceutical and medicine manufacturing industry, or hospitals.
In addition, many biological scientists held biology faculty positions in colleges and
universities.
Employment of biological scientists is projected to grow about as fast as average for all occupations
over the 2004-14 period, as biotechnological research and development continues to drive job growth. However,
doctoral degree holders face competition for basic research positions. The Federal Government funds much basic
research and development, including many areas of medical research that relate to biological science. Recent
budget increases at the National Institutes of Health have led to large increases in Federal basic research and
development expenditures, with research grants growing both in number and in dollar amount. Nevertheless, the
increase in expenditures is expected to slow significantly over the 2004-14 projection period, resulting in a
highly competitive environment for winning and renewing research grants. Furthermore, should the number of
advanced degrees awarded continue to grow, applicants for research grants are likely to face even more competition.
Currently, about 1 in 3 grant proposals are approved for long-term research projects. In addition, applied
research positions in private industry may become more difficult to obtain if increasing numbers of scientists
seek jobs in private industry because of the competitive job market for independent research positions in
universities and for college and university faculty.
Opportunities for those with a bachelor’s or master’s degree in biological science are expected to be better.
The number of science-related jobs in sales, marketing, and research management for which non-Ph.D.s
usually qualify is expected to exceed the number of independent research positions. Non-Ph.D.s also
may fill positions as science or engineering technicians or as medical health technologists and technicians.
Some may become high school biology teachers.
Biological scientists enjoyed very rapid gains in employment between the mid-1980s and mid-1990s
reflecting, in part, increased staffing requirements in new biotechnology companies. Employment growth should
slow somewhat, along with a slowdown in the number of new biotechnology firms; some existing firms will
merge or be absorbed by larger biotechnology or pharmaceutical firms. However, much of the basic biological
research done in recent years has resulted in new knowledge, including the isolation and identification of
genes. Biological scientists will be needed to take this knowledge to the next stage, which is understanding
how certain genes function within an entire organism, so that gene therapies can be developed to treat diseases.
Even pharmaceutical and other firms not solely engaged in biotechnology use biotechnology techniques extensively,
spurring employment increases for biological scientists. For example, biological scientists are continuing to help
farmers increase crop yields by pinpointing genes that can help crops such as wheat grow worldwide in areas that
currently are hostile to the crop. Expected expansion of research related to health issues such as AIDS, cancer,
and Alzheimer’s disease also should create more jobs for these scientists. In addition, efforts to discover new
and improved ways to clean up and preserve the environment will continue to add to job growth. More biological
scientists will be needed to determine the environmental impact of industry and government actions and to prevent
or correct environmental problems such as the negative effects of pesticide use. Some biological scientists will
find opportunities in environmental regulatory agencies; others will use their expertise to advise lawmakers on
legislation to save environmentally sensitive areas. There will continue to be demand for biological scientists
specializing in botany, zoology, and marine biology, but opportunities will be limited because of the small size
of these fields. New industrial applications of biotechnology, such as changing how companies make ethanol for
transportation fuel, also will spur demand for biological scientists.
Marine biology, despite its attractiveness as a career, is a very small specialty within biological science.
Prospective marine biology students should be aware that those who would like to enter this specialty far
outnumber the very few openings that occur each year for the type of glamorous research jobs that many
would like to obtain. Almost all marine biologists who do basic research have a Ph.D.
Biological scientists are less likely to lose their jobs during recessions than are those in many other
occupations because many are employed on long-term research projects. However, an economic downturn could
influence the amount of money allocated to new research and development efforts, particularly in areas of
risky or innovative research. An economic downturn also could limit the possibility of extension or renewal of existing projects.
Median annual earnings of biochemists and biophysicists were $68,950 in May 2004.
The middle 50 percent earned between $49,430 and $88,540. The lowest 10 percent earned less
than $38,710, and the highest 10 percent earned more than $110,660. Median annual earnings of
microbiologists were $54,840 in May 2004. The middle 50 percent earned between $41,000 and $74,260.
The lowest 10 percent earned less than $32,630, and the highest 10 percent earned more than $101,720.
Median annual earnings of zoologists and wildlife biologists were $50,330 in May 2004. The middle 50
percent earned between $39,150 and $63,800. The lowest 10 percent earned less than $31,450, and the
highest 10 percent earned more than $81,200. Median annual earnings of biochemists and biophysicists
employed in scientific research and development services were $73,900 in May 2004.
According to the National Association of Colleges and Employers, beginning salary offers in
July 2005 averaged $31,258 a year for bachelor’s degree recipients in biological and life sciences.
In the Federal Government in 2005, general biological scientists in nonsupervisory, supervisory,
and managerial positions earned an average salary of $69,908; microbiologists, $80,798; ecologists, $72,021;
physiologists, $93,208; geneticists, $85,170; zoologists, $101,601; and botanists, $62,207.
