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Flashcards in Bio- Chapter 1 Deck (33):
1

Biology

The scientific study of life

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Science

Is an approach to understanding the natural world that is based on injury- a search for information, explanations, and answers to specific questions

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Discovery Science

Describing nature, Verifiable observations and measurements are the data of this.

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Hypothesis-driven science

Explaining nature

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Data

Recorded observations, these are items of information on which scientific inquiry is based on.

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Scientific Method

This consists of a series of steps. Observation, question, hypothesis, prediction, experiment.

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Hypothesis

Tentative answer to a question, a proposed explanation for a set of observations.

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Theory

Is much broader in scope than a hypothesis. This is a comprehensive explanation supported by abundant evidence, and it is general enough to spin off many new testable hypotheses.

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Properties of life

Order, regulation, growth and development, energy processing, response to the environment, reproduction, and evolution.

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Species

Generally defined as a group of organisms that live in the same place and time and have the potential to interbreed with one another in nature to produce a healthy offspring.

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Taxonomy

The branch of biology that names and classifies species, is the arrangement of species into a hierarchy of broader and broader groups.

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Three domains of life

Bacteria, Archaea, and Eukarya

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What do Bacteria and Archaea have in common?

They both have prokaryotic cells- that is relativity small and simple cells that lack a nucleus or other compartments bounded by internal membranes.

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Eukaryotes

Organisms with eukaryotic cells- that is relatively large and complex cells that contain a nucleus and other membrane-enclosed compartments, are grouped into the domain of Eukarya.

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Plantae, Fungi, and Animalia are classified under

Eukarya

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What is the fourth group under the domain Eukarya?

Protists

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What are Protists

Single-celled, they include microscope organisms such as amoebas, and certain multicellular forms.

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Plants

Produce their own sugars and other foods by photosynthesis

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Fungi

Mostly decomposers, obtaining food by digesting dead organisms and organic wastes

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Animals

The kingdom to which we belong, obtain food by digesting and ingesting other organisms.

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What are the major themes in biology?

Evolution, structure/function, information flow, energy transformations, interconnections within systems.

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Charles Drawin's theories were...

1. Descent with modification
2. natural selection

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Natural selection

Unequal reproductive success is what darwin called this, it is because the environment selects only certain heritable traits from those already existing.

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Artificial Selection

The purposeful breeding of domesticated plants and animals by humans.

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What is the modern term of what darwin called descent with modification?

Evolution

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What mechanism did darwin propose for evolution?

Natural selection

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What three word phrase summarizes natural selection ?

Unequal reproductive success

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Genes

Hereditary units of information consisting of specific sequences of DNA passed on from the previous generation.

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Genome

The entire set of genetic information that an organism inherits.

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What is the key difference between how energy and ,matter move in an ecosystem?

Energy moves through an ecosystem, whereas matter is recycled within an ecosystem.

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Biosphere

Consists of all the environments on Earth that support life- including soil, oceans, lakes, and other bodies of water, and the lower atmosphere.

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What is the smallest level of biological organization that can display all characteristics of life?

A cell

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List in order the 10 steps of life

Biosphere, ecosystem, communities, populations, organisms, organ systems and organs, tissues, cells, organelles, and molecules and atoms.