unit 1 Flashcards
understand life’s hierarchy of organization and the scope of biology.
atom
molecule
organelle
cell
tissue
organ
organ system
organism
population
community
ecosystem
biosphere
Define producer, consumer, decomposer.
Producer, an organism that creates its own food for energy (plants)
Consumers, obtain energy and nutrients by eating other organisms, living or dead. (humans)
Decomposers, absorb energy and nutrients from wastes or dead organisms. (fungi/bacteria)
What are common features of all forms of life?
Cellular organization, the ability to reproduce, growth and development, energy use, homeostasis, response to their environment, and the ability to adapt.
What are emergent properties?
are new functions that arise from physical and chemical interactions among a system’s components. (much as flour, sugar, butter and chocolate can be brownies- something not evident from the parts themselves) For example two hydrogens and one oxygen atom combined together make and emerge as the substance water.
What are the 3 Domains of Life
The three domains are the Archaea, the Bacteria, and the Eukarya. Organisms in the domain Eukarya keep their genetic material in a nucleus and include the plants, animals, fungi, and protists. Archaea and Bacteria are both composed of prokaryotic cells without a nucleus, but they have different cell walls.
What kingdoms are in the Domain Eukarya (examples)?
The domain Eukarya consists of all organisms that have a nucleus. It comprises the four remaining kingdoms of the six-kingdom system: “Protista,” Fungi, Plantae, and Animalia.
Why is Evolution considered the core theme of Biology.
This theme looks at the way organisms adapt to the environment to improve survival odds. All life on the planet exists because it evolves to best fit the environmental conditions, and those who adapt best, pass on those characteristics to their offspring.
What are the four mechanisms of evolution?
Natural selection, mutation, genetic drift, and gene flow drive the process of evolution.
What is the process of science (Scientific Method)
The scientific method is the process of objectively establishing facts through testing and experimentation. The basic process involves making an observation, forming a hypothesis, making a prediction, conducting an experiment and finally analyzing the results.
