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

1/26

Click to flip

26 Cards in this Set

  • Front
  • Back
most species on earth have changed through time. this change is known as
evolution
evolution refers to change over time in
populations
many scientists believe that the earliest cells on earth were relatively simple, lacking nuclear membranes and other organized cellular structures. over time, more complex cells developed from these simple cells. these statements describethe concept of
evolution
which statement best describes the major concept of the biology theory of evolution?
present-day organisms on earth developed from earlier, distinctly different organisms
some behaviors such as mating and caring for young are genetically determinded in certain species of birds. the presence of these behaviors are most likely due to the fact that
these behaviorshelped birds to survive in the past
which concept includes the other three?
natural selection
a cat hiding.....
darwin
traits that enable an organism to survive are known as
adaptations
the structural changes that occured in certain plants over time, enabling them to thrive in dry habitats, are examples of
adaptations
the human earlobe, because it is not used, will probably disappear from the human population in the future. this statement refelcets the theory of
lamarck
in yellowstone, some species of bacteria can survive and reproduce in hot springs at temperatures near the boiling point of water. the ability to survive and reproduce at these temperatures is an example of
adaptations
which individual would most likely agree with this statement? a weightlifter who built up muscles through frequent exercise would be likely to have stong offspring.
lamarck
which statement would most likely be in agreement with lamarck'stheory of evolution?
giraffes have long necks because their anscestors stretched their necks reaching for food, and this trait was passed on to their offspring
which statement is not included as part of the modern theory of evolution?
new organs arise when they are needed
which statement is not included as part of the modern theory of evolution?
new organs arise when they are needed
according to the heterotroph hypothesis, early heterotrophs modified the environment by releasing
carbon dioxide
which scientists proposed theories that attempted to explain the evolution of organisms?
darwin and lamarck
which scientists proposed theories that attempted to explain the evolution of organisms?
darwin and lamarck
the seperation of a small group of individuals from the main population is known as
geographic isolation
members of a population may become seperated from the original population by a newly formed mountain range.l this occurence is an example of
geographic isolation
modern evolutionary theory consists of darwin modified by knowledge concerning
the genetic basis of variation
insulin extracted from cattle is so similar to the insulin of humans that it is used to treat human diabetics. this similarity is an example of a type of evidenve for evolution gained from comparative
biochemistry
is a species of bear in russia and the brown bear in the united states have a common anscestor, the differences between these two species most likely resulted from
mutations and genetic recombination
which observation provides the best evidence that two different animals most likely have a common ancestor?
similar embryological development
fossils of an extinct species of giant armadillo were found to be similar to a smaller species of armadillo presently inhabiting the same region. this can be explained on the basis of
evolution from older forms
fossil records indicate between 80 and 60 million years ago the structure of the horned dinosaur frequently underwent rapid changes seperated by long periods of stability. this pattern of change best illustrates the concept of
punctuated equlibrium