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CLEP Biology: Social Biology

Subjects : clep, science, biology
Instructions:
  • Answer 39 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. A _____________ is a constituent element of the DNA molecule. There are 3.5 billion of them in humans - separated into four categories: adenines - guanines - cytosines and thymines.






2. __________ experiments seek to gain information about the localization and interaction of the desired protein. One way to do this is to replace the wild-type gene with a 'fusion' gene - which is a juxtaposition of the wild-type gene with a reporting






3. Since a protein is specified by a DNA segment or gene - future copies of that protein can be modified by changing the gene's underlying DNA. One way to do this is to isolate the DNA - cut it - and ________ in a different DNA segment.






4. During _____________ extinction - loss of food species can cause migration or extinction of any species that depends largely or solely on that species as a food source.






5. __________ _________ limits population size. The effects of environmental resistance become more pronounced as the population approaches this number.






6. Pollutants generally are releases of substances into the air and water. Many lakes often have nitrogen and phosphorous as limiting nutrients for aquatic and terrestrial plants. Runoff from agricultural fertilizers increases these nutrients - leading






7. Anti-genetic-engineering groups say that with current ___________ technology there is no way to ensure that genetically modified organisms remain under control.






8. Habitat _________ is the disturbance of the physical environment of a species - for example cutting a forest or draining wetlands.






9. Changes in the biological environment occur in many ways. During Species ___________ an exotic species is introduced into an area where it may have no predators to control its population size - or where it can greatly out-compete native organisms.






10. Removal of a competing species can cause the ecological release of a population __________ in that species' competitor.






11. This evolutionary theory gave biological foundation to the principle of a freely competitive market: or _________ __________.






12. The ______-_________ countries (ldcs) have a higher growth rate than the mdcs. That rate peaked in the early 1960s.






13. The human population is growing _____________ - and not geometrically.






14. ___________ _____ (d) is calculated by dividing the demographic constant by the growth rate.






15. Louis Pasteur is a chemist known for his discovery that most infectious diseases are caused by _______ . This is known as the 'germ theory of disease.'.






16. Agriculture and animal ____________ are examples of population increase of favored organisms.






17. The ________ potential of a population is the maximum growth rate under ideal conditions.






18. By _____________ - when a predator population increases or becomes more efficient at killing the prey - the prey population may decline or go extinct.






19. The death of one species or population can cause the decline or elimination of others - a process known as ____________ extinction.






20. Human populations have continued to increase - due to use of ___________ that has disrupted natural populations.






21. ________________ of populations leads to possible outcomes: population growth as previous limits are removed - population decline as new limits are imposed






22. The best known applications of genetic engineering are genetically modified __________(GMOs).






23. ___________ of exotic or alien non-native species into new areas is perhaps the greatest single factor to affect natural populations.






24. Human populations can be broken down into three age groups: ________ - reproductive - and postreproductive






25. _____________ is thought to be a genetic disorder linked to several genes.






26. Reluctance to recognize this field as ____________ has become popular in the anti-globalization movement and safe trade movement - and is also widely held by most Green parties - and the major parties of France and Germany - which have resisted any a






27. On a positive note - human-induced population ____________ can provide needed resources for growing human populations.






28. ____________ companies have gained far greater control over the production chain than was true of the seed companies that predated them.






29. In one of his first essays - Herbert Spencer applied Malthusianism to animals and launched the expression 'Survival of the _________' later borrowed by Darwin.






30. A ___________ ___________ is defined as a decrease in birth and death rates due to economic and industrial growth.






31. _________ population growth occurs in two cases. 1. ZPG = high birth rates - high death rates 2. ZPG = low birth rates - low birth rates






32. Genetic Engineering - Genetic __________(GM) - and Gene Splicing (once in widespread use but now deprecated) describe the process of manipulating genes in an animal or plant - outside of the organism's normal reproductive process.






33. The ________ _____ is determined by the birth rate and the death rate of a population - usually per 1 -000 individuals.






34. Predator release is common where humans hunt - trap - or otherwise reduce predator populations - allowing the ______ population to increase.






35. Human action is causing the ____________ of species at thousands of times the natural rate.






36. Genetic __________ is the artificial assembly of DNA fragments of different origin - made possible by the tools of genetic engineering.






37. The _______-___________ countries (mdcs) doubled their populations between 1850 and 1950 - due to a decline in the death rate and improved living conditions.






38. Humans can remove or alter the _________ on population sizes - with both good and bad consequences.






39. Loss of function - or __________ experiments - are those in which an organism is engineered to lack one or more genes. This allows the experimenter to analyze the defects caused by this mutation - and can be considerably useful in unearthing the func