, a botanist and microbiologist Biologists who work in basic research formulate theories and devise experiments to advance human knowledge on life including topics such as
evolution,
biochemistry,
molecular biology,
neuroscience and
cell biology. Biologists typically conduct laboratory experiments involving
animals,
plants,
microorganisms or
biomolecules. However, a small part of biological research also occurs outside the laboratory and may involve natural observation rather than experimentation. For example, a botanist may investigate the plant species present in a particular environment, while an ecologist might study how a forest area recovers after a fire. Biologists who work in applied research use instead the accomplishments gained by basic research to further knowledge in particular fields or applications. For example, this applied research may be used to develop new
pharmaceutical drugs, treatments and medical
diagnostic tests. Biological scientists conducting applied research and product development in private industry may be required to describe their research plans or results to non-scientists who are in a position to veto or approve their ideas. These scientists must consider the business effects of their work. Swift advances in knowledge of genetics and organic molecules spurred growth in the field of biotechnology, transforming the industries in which biological scientists work. Biological scientists can now manipulate the genetic material of animals and plants, attempting to make organisms (including humans) more productive or resistant to disease. Basic and applied research on biotechnological processes, 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 now produced by biotechnological means. Some of these substances are useful in treating diseases. Those working on various genome (chromosomes with their associated genes) projects isolate genes and determine their function. This work continues to lead to the discovery of genes associated with specific diseases and inherited health risks, such as sickle cell anemia. Advances in biotechnology have created research opportunities in almost all areas of biology, with commercial applications in areas such as medicine, agriculture, and
environmental remediation.
Specializations Most biological scientists specialize in the study of a certain type of organism or in a specific activity, although recent advances have blurred some traditional classifications. •
Geneticists study
genetics, the science of
genes,
heredity, and
variation of
organisms. •
Neuroscientists study the
nervous system. •
Developmental biologists study the process of development and growth of
organisms •
Biochemists study the chemical composition of living things. They analyze the complex chemical combinations and reactions involved in
metabolism,
reproduction, and growth. •
Molecular biologists study the
biological activity between
biomolecules. •
Microbiologists investigate the growth and characteristics of microscopic organisms such as
bacteria,
algae, or
fungi. •
Physiologists study life functions of plants and animals, 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 use experimental methods traditionally employed in
physics to answer biological questions . •
Computational biologists apply the techniques of
computer science,
applied mathematics and
statistics to address biological problems. The main focus lies on developing
mathematical modeling and computational simulation techniques. By these means it addresses scientific research topics with their theoretical and experimental questions without a laboratory. •
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 uses of land and water areas. Zoologists usually are identified by the animal group they study. For example,
ornithologists study
birds,
mammalogists study
mammals,
herpetologists study
reptiles and
amphibians,
ichthyologists study
fish,
cnidariologists study
jellyfishes and
entomologists study insects. •
Botanists study plants and their environments. Some study all aspects of plant life, including
algae,
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, the geological record of plants and their evolution.
Mycologists study
fungi, such as
yeasts,
mold and
mushrooms, which are a separate kingdom from plants. • 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 biology is a branch of
oceanography, which is the study of the biological, chemical, geological, and physical characteristics of oceans and the ocean floor. (See the Handbook statements on environmental scientists and hydrologists and on geoscientists.) •
Paleontologists study the history of life on Earth through the analysis of
fossils—preserved remains, traces, or impressions of past organisms found within
rocks. Their work combines biological knowledge with geological methods, since interpreting fossils requires understanding the
stratigraphy,
sedimentology, and
geochronology of the rock layers in which they occur. Paleontologists reconstruct ancient organisms, ecosystems, and environments; investigate patterns of evolution, extinction, and biodiversity through deep time; and analyze how geological processes influence the preservation and distribution of fossils. Many specialize in particular groups, such as
vertebrates,
invertebrates, or
plants, or in subfields such as
taphonomy (the study of fossilization),
paleoecology (ancient ecosystems), or
biostratigraphy (dating and correlating rock layers using fossils). •
Evolutionary biologists investigate the
evolutionary processes that produced the
diversity of life on
Earth, starting from
a single common ancestor. These processes include
natural selection,
common descent, and
speciation. •
Ecologists investigate 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. ==Employment==