vocabs - Chapter 1 Science: a way of knowing, a means by...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 1 Science: a way of knowing, a means by which we seek potentially falsifiable explanations for observable phenomena. It depends on evidence. Biology: the scientific study of life. Biosphere, consists of all the environments on earth that support life-most regions of land, bodies of water, and the lower atmosphere. Ecosystem: consists of all organisms living in a particular area, as well as all the nonliving, physical components of environment with which the organisms interact, such as air, soil, water and sunlight. Community: the array of organisms inhabiting an ecosystem Population: an interacting group of individuals of one species. Organism: individual living thing Organ system: consists of several organs that work together in performing a specific function. Ex. circulatory system, digestive system, or nervous system Producers: plants and other photosynthetic organisms that provide food. Consumers: eat plants and other animals. Decomposers: act as recyclers, changing the complex dead matter into simple mineral nutrients that plants can use. Species: term used for a particular type of organism. Taxonomy: the branch of biology that names and classifies species, arranges them into a hierarchy of broader and braoder groups. Kingdoms (Protista, Fungi, Animalia, Plantae). Domains. List of some properties that are common to all organisms. 1) Order- all living things exhibit complex organization. 2) Regulation- The environment, maintaining it within limits that sustain life. 3) Growth and development- Inherited information carried by genes controls an organism’s pattern of growth and development. 4) Energy utilization- organisms take in energy and transform it to perform all of life’s activities. 5) Response to the environment- All organisms respond to environmental stimuli. 6) Reproduction- 7) Evolution-reproduction underlies the capacity of species to change over time. Charles Darwin: Theories- comprehensive ideas with great explanations. The Origin of Species - Darwin calls evolutionary history “descent with modification”, meaning there was descent from a common ancestor and modification of life. - Natural Selection: Synthesized this concept from two observations. o Individual variation: population vary in many heritable traits. o Overproduction and competition: A population of any species has the potential to produce far more offspring than will survive to produce offspring of their own. With more individuals than the environment can support, competition is inevitable.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
o Unequal reproductive success: inference that individuals are unequal in their likelihood of surviving and reproducing. - Evolutionary adaptation: the accumulation of favorable variations in a population over time. Discovery Science:
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/21/2009 for the course BIO G 109 at Cornell University (Engineering School).

Page1 / 9

vocabs - Chapter 1 Science: a way of knowing, a means by...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online