Test your basic knowledge |

CLEP Biology: Principles Of Evolution

Subjects : clep, science, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The Neolithic transition - about 10 -000 years ago - involved the change from __________-__________ societies to agricultural ones based on cultivation of plants and domesticated animals.






2. Almost all _________ organisms are either plants or animals.






3. The ____________ mammals occupy Australia - and differ from placental mammals because they bear their young inside a pouch (instead of a placenta).






4. Because organisms are continually tested by their changing ______________ - their forms change to suit new conditions.






5. _____________ struggle takes place between the individuals of the same species.






6. About 2 million years ago - two groups developed: the australopithecines - generally smaller brained and not users of tools; and the line that led to genus _________ - larger brained and makers and users of tools.






7. The only kingdom which consists of prokaryotes is the __________ kingdom.






8. _____________ can occur randomly - from radiation damage (impact with high energy g-rays or cosmic rays) - from exposure to chemical agents called mutagens - or simply by error in the DNA replication process.






9. Extinctions - mostly at the level of species - have been occurring constantly at a low 'background rate' - usually matched by the rate at which new species appear - with the result that ____________ is constantly increasing.






10. Charles Darwin published a book The Origin of Species in the year 1859. He proposed that the new species came about by a process called ___________ __________.






11. Prior to the scientific discoveries of the past 200 years - _____________ from the Book Of Genesis described how living things came into being.






12. As the finch population began to flourish in these advantageous conditions - ______________ competition became a factor - and resources on the islands were squeezed and could not sustain the population of the finches for long.






13. Jean Baptiste de Lamarck (1744-1829) developed one of the first theories on how species changed. Lamarck - in 1809 - concluded that organisms of higher complexity had __________ from preexisting - less complex organisms.






14. Any change of _________ frequencies in a gene pool indicates that evolution has occurred. The Hardy-Weinberg law proposes that those factors that violate the conditions listed - cause evolution.






15. The early stages of development of the ___________ of fish - salamander - tortoise - hen and man show remarkable similarity.






16. The __________ kingdom consists of one-celled organisms as well - but differs from the Monera kingdom in that it consists of eukaryotes.






17. When carriers have advantages that allow a detrimental allele to persist in a population - ______________ polymorphism is at work.






18. _________ evidence shows that the horse has undergone considerable evolutionary change over a period of 60 million years.






19. The most recent mass extinction - the K-T extinction at the end of the Cretaceous period - is best known for having wiped out the __________ .






20. The mutation may be harmful (resulting in a reduced probability of survival for the organism involved) - ____________ (it might also do its intended job better) or merely neutral (no effect at all).






21. A comparative study of physiology and biochemistry also supports the common origin for different organisms. The _____________ of all organisms cells is more or less same in composition.






22. Almost all living organisms use the same basic biochemical molecules - including DNA - ATP - and many identical or nearly identical enzymes. Organisms utilize the same DNA triplet base _________ and the same 20 amino acids in their proteins






23. Such a dual level designation is referred to as a _________ nomenclature.






24. If a population began with a few individuals - one or more of whom carried a particular allele - that allele may come to be represented in many of the descendants. This is known as ____________.






25. Homology was defined by Darwin as similarity of structure and position - and distinguished from 'analogy -' which was defined as similarity of _____________ but not necessarily of structure and position.






26. Humans who have produced offspring that successfully live in a ________ environment tend to be broader and smaller in stature while hotter environments are occupied by thinner taller humans.






27. A Hardy-Weinberg equilibrium provides a ___________ by which to judge whether evolution has occurred.






28. Most anthropologists agree that the ______ _______ was populated by a series of three migrations over the temporary land connection between Asia and North America.






29. _______________ is that branch of biology dealing with the identification and naming of organisms.






30. The highest category in the Linnaean system of classification is the __________. At this level - organisms are distinguished on the basis of cellular organization and methods of nutrition.






31. __________ are the remains of organisms that lived in the past.






32. _____________ struggle takes place between the individuals of different species.






33. Populations begin to diverge when gene flow between them is restricted. Geographic isolation is often the first step in ____________ speciation.






34. At the molecular level - life's ability to reproduce begins with the replication of ____________ - during which two new spirals are created that are exact replicas of the original molecule.






35. Heritable variations are called _____________ variations. Such variations arising from changes in DNA are passed on within families and to the offspring from the parents.






36. Immediately below kingdom is the _________ level of classification. At this level - animals are grouped together based on similarities in basic body plan or organization.






37. Primates evolved about approximately 30 million years ago in ___________. One branch of primates evolved into the Old and New World Monkeys - the other into the hominoids (the line of descent common to both apes and man).






38. Organisms struggle for existence. Organisms with advantageous characters survive - while those which lack such variations perish. The advantageous characters are passed on to the offsprings generation after generation and the organisms become better






39. ___________ is a specific explanation of similarity of form seen in the biological world. In genetics - it is used in reference to protein or DNA sequences - meaning that the given sequences share ancestry.






40. A ____________ tree is a graphical means to depict the evolutionary relationships of a group of organisms.






41. As populations diverge - they form similar but related species. When are two populations new species? When populations no longer _____________ they are thought to be separate species.






42. In a genetic drift the entire population may become homozygous for the allele or - equally likely - the allele may disappear. Before either of these fates occurs - the allele represents a Polymorphism. This is a case of polymorphism through...






43. The study of ____________ ____________ supports the claim of a common origin of organisms.






44. Animals and plants show variations in physical structure. Some of these variations are simply caused by external conditions (environmental) - such as accidents - temperature - food abundance - etc.. ___________ variations have no effect on evolution






45. _____________ is the end of a particular evolutionary line - the end of a species - a family - or a larger group of organisms.






46. There are certain animals with intermediate characters between two major groups of animals. They are called ___________ _____.






47. The ______-____-______ Hypothesis proposes that some Homo erectus remained in Africa and continued to evolve into Homo sapiens - and left Africa about 100 -000-200 -000 years ago. From a single source - Homo sapiens replaced all populations of Homo e






48. ___________ evolution is an evolutionary process in which organisms not closely related independently acquire some characteristic or characteristics in common.






49. The _______-_________ Law states that an equilibrium of allele frequencies in a gene pool remains in effect in each succeeding generation of a sexually reproducing population if five conditions are met.






50. _________ ______ disease causes anemia - joint pain - a swollen spleen - and frequent - severe infections. It illustrates balanced polymorphism because carriers are resistant to malaria - an infection by the parasite that causes cycles of chills and







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests