Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/9

Click to flip

9 Cards in this Set

  • Front
  • Back
Structures called_____, capable of growth and metabolism, have been produced in the laboratory. Structures like these may have eventually evolved into heterotrophic prokaryotes.
Protocells
Organisms known as ________________ are chemosynthetic autotrophs that survive in harsh conditions where there is little sunlight or oxygen
Archaebacteria
The ancient belief that nonliving materials could be transformed into living organisms was referred to as _________
Spontanious generation
the idea that life arises only from life is referred to as ________________
biogenesis
any indirect evidence left by an animal and may include a footprint, a trail, or a burrow.
Trace fossils
when minerals in rocks fill a space left by a decayed oranism, they make a replica, or ________, of the organism
Casts
A ____________ forms when an organism is buried in sediment and then decays, leaving an empty space.
Molds
____________-minerals sometimes penetrate and replace the hard parts of an organism.
_____________-void spaces in original organism infilled by minerals
Petrified/Permineralized fosslis
At times, an entire organism was quickly trapped in ice or tree sap that hardened into amber
Amber-Preserved or frozen fossils