A view of life Flashcards

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1
Q

Five basic themes of biology.

A
  1. Biological systems interact.
  2. Structure and function are interrelated in all biological systems.
  3. Information must be transmitted within organisms and among them.
  4. Life dependes on a continuous input of energy from the sun; every activity requires energy.
  5. Evolution is key.
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2
Q

What´s the difference between a living system and a nonliving thing?

A
  1. All organisms are composed of cells, with a plasm membrane.
  2. Organisms grow and develop.
  3. Organisms regulate their metabolic processes.
  4. Organisms respond to stimuli.
  5. Organisms reproduce.
  6. Populations evolve and adapt.
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3
Q

Eukaryote cells

A

They contain a variety of organells enclosed by membranes, including nucleus.

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4
Q

Prokaryotic cells

A

Microscopic organisms classified in two larger domains: Bacteria and Archaea. They don’t have nucleus or other membrane-enclosed organelles.

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5
Q

Levels of organization

A

Chemical level - molecular level - cellular level - tissue level - organs level - organ system level - organism level - population level - community level - ecosystem level - biosphere level.

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6
Q

DNA function

A

The information carried by the DNA that makes up the genes has many functions including providing the “recipes” for making all the proteins required by an organism.

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7
Q

A self suficient ecosystem consists of…

A

Three types of organisms: producers, consumers and decomposers.

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8
Q

Species

A

Is a group of organisms with a similar structure, function and behavior.

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9
Q

Taxonomic classification of organisms

A

Species - Genus - Family - Order - Clase - Phylum - Kingdoms - Domain.

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10
Q

Clade

A

A group of organisms with a common ancestor.

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11
Q

Kingdoms

A

Two prokaryotic kingdoms: Archaea and Bacteria. Four Eukarya kingdoms: Protists, Plants, Animals and Fungi.

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12
Q

Scientific theory

A

It is an integrated explanation of some aspect of the natural world that is based on a number of hypotheses, each supported by consistent results from many observations and experiments.

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13
Q

Hypothesis

A

A testable explanation for observations or phenomena.

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