Question

(21) Which of the following is an example of a competitive relationship between organisms?

(A) symbiosis                                                (B) mutualism    

(C) predator- prey                                          (D) all of the above

(22) Which of the following is the major greenhouse gas?

(A) methane                                                   (B) chloroflorohydrocarbons    

(C) carbon monoxide                                     (D) carbon dioxide

(23) Which of the following chemicals contribute to acid rain deposition?

(A) sulfur trioxide (SO3)                               (B) carbon dioxide (CO2)   

(C) nitrogen dioxide (NO2)                           (D) all of the above

Fundamentals of Mendelian (Simple) Genetics.

(24) An organism’s phenotype refers to its

(A) genetic composition                                                       

(B) physical traits   

(C) both genetic composition and its physical traits

(D) neither its genetic composition or its physical traits

(25) In Mendelian genetics, ____ allele(s) determine the production of a particular physical trait (or characteristic).

(A) one                                                           (B) two   

(C) three                                                         (D) four

(26) In Mendelian genetics, how many unique genotypes exist in the population?

(A) one                                                           (B) two   

(C) three                                                         (D) four

(27) With respect to a pair of homologous chromosomes (for example: #5, #5) of an individual,

(A) both chromosomes are inherited from the maternal parent

(B) both chromosomes are inherited from the paternal parent   

(C) one chromosome is inherited from each of the parents

(D) this information is not known

(28) The rules and regulations for “complete dominance” indicate that ___ copies of the recessive allele are needed to produce the recessive phenotype.

(A) one                                                           (B) two   

(C) three                                                         (D) four

(29) Assume the inheritance of fur color in mice is governed by the rules of “co-dominance” (note: you are given that the two chromosomal alleles are “brown” and “white”). A mouse exhibiting the co-dominant phenotype would have which color fur?

(30) The textbook discusses human blood typing (ABO) from both phenotypic and genotypic perspectives. If a particular red blood cell exhibits both the cell surface antigens designated glycoproteins A and B, we designated the blood type AB. This type of genetics is an example of multiple alleles and which of the following types of dominance?

(A) complete dominance                                (B) co-dominance    

(C) partial dominance                                    (D) non-dominance

(31) A human couple share the same blood type (= AB). The mother has given birth to eighteen children over three years (sextuplets three times in a row! -- Jerry Springer or Maury Povich or Steve Wilkos here they come!!). None of these children can have blood type…

(A) A                                                              (B) B    

(C) AB                                                           (D) O

Chromosome Structure and Function.

(32) During human reproduction, sperm and egg combine during fertilization to form the __________.

(A) heterozygote                                            (B) homozygote  

(C) zygote                                                      (D) none of the above

(33) Chromosomes which are not the sex chromosomes are called

(A) somatomes                                              (B) somatomers    

(C) automers                                                  (D) autosomes

(34) Karotype analysis is an especially simple and useful technique because it can indicate very dramatically any

(A) variation in an individual’s chromosome number from the normal number

(B) structural abnormalities in specific chromosomes   

(C) both choices A and B

(D) neither choices A or B

Answer 1

21. Predator prey

Competition is a type of species interaction in which one of the organisms is harmed and the other one is benefited. The most common example of this type of species interaction is predator-prey interaction. The predator is benefited in the the interaction because it eats the prey whereas the prey is harmed because it is killed.

Symbiosis and mutualism are sometimes used in place of each other. It is a type of species interaction in which both of the species are benefited. The most common examples of this type of interaction are mycorrhizae and lichens. Mycorrhiza is the symbiotic association between fungus and roots of higher plant. The fungus helps the plant in the absorption of phosphorus from the soil. Also the plant becomes abiotic and biotic stress tolerant in the presence of a fungus. And in return fungus get a shelter to live and Carbohydrate and lipids from the plants.

22. Carbondioxide

Greenhouse effect is defined as the mechanism in which the greenhouse gases are trapped in the earth's atmosphere leading to an increase in the Global temperature. The most important Greenhouse gas is carbon dioxide. Other gases include Methane and chlorofluorocarbons which is released from air conditioner.

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