Biology Exam

26. What is the primary purpose of creating transgenic organisms?

A. Promote expression of desired genes improving nutritional quality
B. Produce organisms affecting reproduction across species
C. Mimic human behavior
D. Generate pathogenic organisms

27. What is the role of biology in criminal investigation?

A. Detect pathogens and herbicides
B. Produce organic compounds
C. Examine evidence using blood, saliva and hair
D. Detect food flavors

28. How do biological washing powders save energy?

A. Remove stains using acidic water
B. Use protease alone
C. Clean effectively at low temperatures
D. Use lipase only

29. What is biological warfare?

A. bacteria, fungi, and viruses as a biological agent to control pests
B. Using agents to kill humans, animals or plants
C. Cloning technique to make genetic copies of an organisms
D. Producing genetically modified organisisms

30. Which describes bacteria correctly?

A. Have mitochondria
B. Have Golgi bodies
C. Rigid cell wall and diverse nutrition
D. Have true nucleus

31. Suppose there was a cross between pea plants with flower position axial(AA) and terminal (aa) and produce F1 generation. In a cross AA × aa, how many heterozygous dominants occur among 1000 F2 offspring?

A. 500
B. 250
C. 750
D. 200

32. A green pod plant test-cross gives all green offspring. What is its genotype?

A. Heterozygous dominant
B. Incomplete dominant
C. Homozygous recessive
D. Homozygous dominant

33. This item is based on the following examples of genetic inheritance:

Inflated and pinched pod forms will have inflated pod offspring.
Red cow and white bull will have roan calf.
AA and BB blood type people will have a child with AB blood type.
Red and white roses will have a pink rose offspring.

A. 1,2,4
B. 2,3,4
C. 1,3,4
D. 1,2,3

34. The item is based on the following prdigree diagram for color blindness, In X-linked recessive trait.

Based on the above diagram, if the family in the second generation has children, what is the probability that they will have carries female and color blind male, respectively?

< A. 1/2 and 3/4
B. 3/4 and 1/4
C. 1/4 and 1/4
D. 1/4 and 1/2

35. Farmers maintaining long-tailed sheep by mating similar sheep apply:

A. Genetic engineering
B. Cloning
C. Crossbreeding
D. Inbreeding

36. How does alcohol contribute to HIV transmission?

A. Causes impotence or loss of sexual drive bothe in male and female
B. Increases virus multiplication
C. Leads to risky behaviors
D. Improves decision making ability of a person

37. Which list contains only renewable resources?

A. Sunlight, wind, hydro, natural gas
B. Sunlight, wind, hydro, biomass
C. Coal, wind, hydro, biomass
D. Coal, oil, gas, minerals

38. This item is based on the following list of activitys.

I, Establishing national parks
II, Wind sanctuaries
III, preparing wild life reserves
IV, Practicing overgrazing

Which of the above activity CANNOT be used for the conservation of wild life?

A. III
B. IV
C. I
D. II

39. Which pollutants cause acid rain and its effects?

A. Chlorofluorocarbones – imcreasing UV rays and resparatory disease
B. Perfluorocarbones – causing skin cancer
C. SO₂ and NO₂ – plant & water damage
D. CO₂ and methane – melting ice

40. Cause and effect of global warming:

A. Fossil fuels – more biodiversity
B. Fossil fuels – lower sea level
C. Greenhouse gases – biodiversity loss
D. Greenhouse gases – lower sea level

41. If progesterone remains high after ovulation:

A. Uterine lining maintained
B. Corpus luteum regenerates
C. Estrogen closes uterus lining
D. FSH rises rapidly

42. Surgical contraceptive preventing ovum movement:

A. Intrauterine device.
B. Sterilization.
C. Spermicide
D. Injection

43. Which increases risk of STI(Sexually transmitted infections)?

A. Protective sex
B. Condom use
C. Drug misuse
D. No Sexually transmitted infections history

44. Two women where decided not have pregnancy in the near future and they were offered two different contraceptve options, Woman I, the material fitted in her uterus did not allows the sperm to fertilizing the ege.In woman II,the contraceptive prevented hormone prodaction and releasing the eggs from ovaries. Which type of contraceptive methods method did woman I and II used, rwspectively?

A. Contraceptive Injection & contraceptive implant
B. Copper-coated intrauterine device & contraceptive injection
C. Post pill & copper-coated intrauterine devic
D. Sterilization & injectable contraceptive Depo-Provera

45. The finding of the study conducted in two different villages showed that there are harmful practices that affect reproductive health. The common practices in village 1 were forcing underage girls to get married based norms and sexual abuse or harassment. In village 2 abduction to make the girl a wife unwillingly was very common. Which one of the following options is correct about the two villages?

A. In village 2, kidnapping and female genital mutilation are common.
B. In village 2, gender-based violence and female genital mutilation are common.
C. In village 1, gender-based violence and early marriage are common.
D. In village 1, gender-based violence, kidnapping and female genital mutilation are common

46. Which of the following is correct about the process of digestion or absorption of food in the small intestine?

A. Water is reabsorbed into the small intestine and metabolic wastes are excreted.
B. Glucose and non-hydrolyzed starch molecules are absorbed through the lacteal.
C. Bile emulsifies fats to increase the surface area to make it easier for lipase.
D. Proteins are converted into amino acids by the action of hydrochloric acid and amylase.

47. In an experiment, students wanted to prove that enzymatic digestion begins in the mouth using certain chewed food coated with their own saliva. In order to get a positive result for their experiment, what type of food sample and testing solution should the students use?

A. Fish & NaOH
B. Bread & copper sulphate solution
C. Meat & Benedict’s solution
D. Potato & iodine solution

48. Gas percentages in exhaled air (N₂, O₂, CO₂):

A. 16%, 4%, 80%
B. 4%, 16%, 80%
C. 80%, 4%, 16%
D. 80%, 16%, 4%

49. Three students carried out different experiments in exhaled air as indicted below

Student I - uses cold glass and blue cobalt chloride paper
Student II - uses ice cubes
Student III - uses tube containing lime solution and straw

A. II and I
B. I and III
C. I and II
D. II and III

50. Consider the following structure of the human heart.

Which part forces oxygenated blood out of the heart and around the body?

A. Left ventricle
B. Right atrium
C. Right ventricle
D. Aorta

Biology Exam: Part 2

Exam Results