Biology Chapter 1 - Evolution, the Themes of Biology, and Scientific Inquiry

Evolution

The process of change that has transformed life on Earth.

Adaptation

An organism's adjustments to its environment as a result of evolutionary processes.

Biology

The scientific study of life.

Emergent Properties

Characteristics that arise from the arrangement and interaction of parts within a system.

Structure and Function

The relationship between the form of a biological structure and its function.

Cell

The smallest unit of organization that can perform all activities required for life.

Eukaryotic Cell

A cell that has membrane-enclosed organelles, including a nucleus.

Prokaryotic Cell

A simpler cell type that does not have a nucleus or membrane-enclosed organelles.

DNA (Deoxyribonucleic Acid)

The genetic material that contains instructions(proteins) for an organism's development and functioning.

Chromosomes

Structures within cells that contain genetic material.

Gene

The unit of inheritance that encodes information for building molecules in a cell.

Gene Expression

The process of converting the information from a gene into a functional product.

Genome

The entire set of genetic instructions in an organism.

Genomics

The study of sets of genes within and between species.

Proteomics

The study of whole sets of proteins and their properties.

Producers

Organisms, like plants, that generate chemical energy through photosynthesis.

Consumers

Organisms that feed on other organisms or their remains.

Negative Feedback

A regulatory mechanism in which a response reduces the initial stimulus.

Positive Feedback

A regulatory mechanism in which an end product speeds up its own production.

Natural Selection

The process by which individuals better suited to their environment are more likely to survive and reproduce.

Descent with Modification

The concept that species change over time and share a common ancestor.

Hypothesis

A testable prediction based on observations and assumptions.

Observation

The act of noting and recording an occurrence or phenomenon.

Data

Recorded observations gathered during scientific investigation.

Qualitative Data

Descriptive information often related to characteristics that cannot be easily measured.

Quantitative Data

Numerical measurements expressed in tables and graphs.

Theory

A broad explanation in science that is supported by a substantial body of evidence.

Inquiry

The search for information and explanations of natural phenomena.

Feedback Regulation

A mechanism in which the output of a process regulates its own production.

Biological Organization

The hierarchical structure that includes levels from molecules to ecosystems.

Unity and Diversity of Life

The concept that all living organisms share a common origin but exhibit diverse adaptations.

Three Domains of Life

Bacteria, Archaea, and Eukarya, which classify all organisms.

Archaea

Single-celled organisms that are prokaryotic and often live in extreme environments.

Bacteria

Prokaryotic organisms that can be found in various environments and are essential to life.

Eukarya

Domain that includes all organisms with eukaryotic cells, including protists, plants, fungi, and animals.

Charles Darwin

Naturalist who proposed the theory of natural selection and published On the Origin of Species.

Fungi

Organisms that absorb nutrients from their environment.

Plants

Multicellular organisms that produce food through photosynthesis.

Animals

Multicellular organisms that ingest their food.

Proteome

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

Chemical Energy

Energy stored in the bonds of chemical compounds, such as in glucose.

Ecosystem

A community of living organisms interacting with their physical environment.

Interconnectedness of Life Systems

The idea that all biological systems are interconnected and interact with one another.

Darwinian Evolution

The theory that species evolve over time through the process of natural selection.

Scientific Method

A systematic approach to inquiry that involves making observations, forming hypotheses, and testing them.

Characters are transmitted from parents to offspring. ________ are the units of inheritance.

Genes

What is the order of the hierarchy of the organization?

1. Biosphere
2. Ecosystem
3. Community
4. Population
5. Organism

Which of the following statements is true regarding the complexity of biological systems?

C. Knowing the function of a component of a living system can provide insights into the structure and organization of the living system.

A localized group of organisms that belong to the same species is called a:

Population

The best experimental design ________.

B. includes a large sample size and a control and alters only one condition between the controls and the experimental condition

A friend of yours calls to say that his car would not start this morning. He asks for your help. You say that you think the battery must be dead. If so, then jump-starting the car from a good battery will solve the problem. In doing so, you are ________.

C. stating a hypothesis and using that hypothesis to make a testable prediction

Which of the following types of cells utilize deoxyribonucleic acid (DNA) as their genetic material but do not have their DNA encased within a nuclear envelope?

C. archaean

What is the order of the scientific method?

1. Observation ~ 2. Hypothesis ~ 3. Experiment ~ 4. Analysis ~ 5. Conclusion ~ 6. Communicate results

In comparison to eukaryotes, prokaryotes ________.

B. are smaller

Which of the following is true of natural selection?

C. It requires genetic variation, results in descent with modification, and involves differential reproductive success.

You are suffering from Streptococcus throat infection. You share the following with the bacteria that is responsible for your condition.

D. You both are made up of cells.

Which of these provides evidence of the common ancestry of all life?

A. near universality of the genetic code

Plants convert ________ to chemical energy.

sunlight

Which of the following statements is true?

A. All forms of life employ the same genetic code

The process by which the information in a gene directs the synthesis of a protein is called ________.

Gene expression

As letters are to the English language, ___________ is/are to genetic information.

Nucleotides

What is the difference between a hypothesis and a theory?

A hypothesis is a testable explanation for a phenomenon, while a theory is a well-supported explanation backed by extensive evidence.

What is evolution?

Evolution is the process of change that has transformed life on Earth over time.

How do adaptations relate to evolution?

Adaptations are traits that improve an organism's ability to survive and reproduce, resulting from evolutionary processes like natural selection.

What is biology?

Biology is the scientific study of life.

What are the five unifying themes of biology?

Organization, Information, Energy and Matter, Interactions, and Evolution.

What are emergent properties?

Emergent properties are characteristics that arise from the arrangement and interaction of parts within a system.

What is the cell theory?

The cell theory states that the cell is the smallest unit of life, and all living organisms are composed of cells.

Compare prokaryotic and eukaryotic cells.

Prokaryotic cells are simpler, smaller, and lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and organelles.

What is DNA and why is it important?

DNA (deoxyribonucleic acid) is the genetic material that stores and transmits hereditary information.

What is gene expression?

Gene expression is the process by which information from a gene is used to synthesize a functional product, such as a protein.

How does energy flow through an ecosystem?

Energy flows through an ecosystem from producers (plants) to consumers (animals) and is eventually lost as heat.

What is feedback regulation?

Feedback regulation is a process where the output of a system regulates the system itself.

What are the three domains of life?

Bacteria, Archaea, and Eukarya.

What are the four kingdoms within the domain Eukarya?

Plantae, Fungi, Animalia, and Protists.

What is the scientific method?

The scientific method involves making observations, forming hypotheses, testing predictions, and drawing conclusions.

“The Whole Is Greater ___ ___…”

“…than the Sum of the Parts"

What are the only 2 prokaryotic things?

Bacteria and archaea

FILL: All other life forms are composed of _____.

Eukaryotic cells