Campbell Biology Chapter 1: Evolution, the Themes of Biology, and Scientific Inquiry

Vocabulary flashcards generated from Chapter 1 of Campbell Biology (13th Edition), focusing on core biological themes, structural concepts, genetics, feedback systems, evolutionary theory, and the scientific process.

Biology

The scientific study of life.

Reductionism

An approach that reduces complex systems to simple components that are manageable to study.

Emergent Properties

Properties that result from the arrangement and interaction of parts as complexity increases.

Systems Biology

The analysis of the interactions among the parts of a biological system, used to study life at all levels.

Cell Theory

The scientific theory stating that all living organisms are made from cells.

Eukaryotic Cell

A cell that has membrane-enclosed organelles, the largest of which is usually the nucleus.

Prokaryotic Cell

A simpler and usually smaller cell that does not contain a nucleus or other membrane-enclosed organelles.

DNA (Deoxyribonucleic Acid)

Structures called chromosomes contain genetic material in this molecular form within cells.

Genes

The units of inheritance that encode information for building the molecules synthesized within the cell.

Nucleotides

Four kinds of chemical building blocks (abbreviated A, G, C, and T) that make up each long chain of DNA.

Gene Expression

The process of converting information from a gene to a cellular product (transcribing DNA into RNA, which is then translated into a protein).

Genome

An organism's entire library of genetic instructions.

Genomics

The study of whole sets of genes in one or more species.

Proteomics

The study of whole sets of proteins and their properties.

Proteome

The entire set of proteins expressed by a given cell, tissue, or organ.

Bioinformatics

The use of computational tools to process a large volume of biological data very rapidly.

Producers

Plants and other photosynthetic organisms that generate chemical energy from sunlight.

Consumers

Organisms that feed on other organisms or their remains.

Feedback Regulation

A biological self-regulation mechanism in which the output or product of a process regulates that very process.

Negative Feedback

The most common form of regulation in living organisms, in which the response acts in opposition to the initial stimulus.

Positive Feedback

A form of regulation in which an end product reinforces or strengthens the initial stimulus.

Evolution

The core theme of biology and scientific explanation for the unity and diversity of organisms, defining living organisms as modified descendants of common ancestors.

Domain Eukarya

The biological domain comprising all eukaryotic organisms, including Plants, Fungi, Animals, and Protists.

Natural Selection

The primary mechanism behind descent with modification, in which the natural environment selects for the propagation of beneficial traits through unequal reproductive success.

Inquiry

The search for information and explanations of natural phenomena.

Data

Recorded observations gathered during scientific study.

Qualitative Data

Data that often takes the form of recorded descriptions.

Quantitative Data

Data expressed as numerical measurements, organized into tables and graphs.

Inductive Reasoning

A type of logic that derives generalizations from a large number of specific observations.

Hypothesis

An explanation, based on observations and assumptions, that leads to a testable prediction.

Experiment

A scientific test carried out under controlled conditions.

Deductive Reasoning

A type of logic that uses general premises to make specific predictions.

Controlled Experiment

An experiment in which an experimental group is compared directly with a control group.

Independent Variable

The factor in an experiment that is manipulated by the researchers.

Dependent Variable

The factor in an experiment that is measured and predicted to be affected in response to the independent variable.

Scientific Theory

A broad explanation that is general enough to lead to many new testable hypotheses and is supported by a large body of evidence compared to a single hypothesis.

Model Organism

A species chosen for intensive study (such as Drosophila melanogaster) whose biological data can be shared among scientists.