31. Eagles, hawks, and falcons belong to which order?
[A] Galliformes
[B] Falconiformes
[C] Psittaciformes
[D] Strigiformes
Show Answer
Correct Answer: B [Falconiformes]
Notes:
Eagles, hawks, and falcons belong to the Falconiformes order, and they have short beaks, strong legs, hooked claws, sharp nails, and eyesight.
32. In which part of the body digestion of protein begins?
[A] Pancreas
[B] Stomach
[C] Small Intestine
[D] Large Intestine
Show Answer
Correct Answer: B [Stomach]
Notes:
Protein digestion begins when you first start chewing. Your saliva contains two enzymes called amylase and lipase. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases to break it down into shorter chains of amino acids.
33. Which of the following is not pure endocrine gland?
[A] Thyroid gland
[B] Thymus gland
[C] Pancreas
[D] Adrenal
Show Answer
Correct Answer: C [Pancreas]
Notes:
The pancreas and gonads are two glands that are not pure endocrine. The pancreas secretes both hormones and enzymes and acts as both endocrine and exocrine.
34. AIDS, Polio, Measles, Influenza are some examples of infections caused by which of the following?
[A] Virus
[B] Bacteria
[C] Protozoan
[D] Fungi
Show Answer
Correct Answer: A [Virus]
Notes:
AIDS, Polio, Measles, Influenza are some examples of infections caused by viruses.
35. Which of the following is called Mendel’s first law of inheritance?
[A] Law of Dominance
[B] Law of Segregation
[C] Law of Independent Assortment
[D] All of the above
Show Answer
Correct Answer: A [Law of Dominance]
Notes:
The law of dominance is also called Mendel’s first law of inheritance. According to this, the hybrid offspring will only inherit the dominant trait in the phenotype.
36. Which of the following is a free-living aerobic and non-photosynthetic nitrogen-fixing bacterium?
[A] Rhizobium
[B] Nostoc
[C] Azospirillum
[D] Azotobacter
Show Answer
Correct Answer: D [Azotobacter]
Notes:
Azotobacter is a free-living aerobic and non-photosynthetic nitrogen-fixing bacterium.
37. Which of the following is used as a tool to insert genes into bacteria to stimulate the production of therapeutic proteins such as human insulin?
[A] Plasmid
[B] Nitrogenous base
[C] Bacteria
[D] RNA
Show Answer
Correct Answer: A [Plasmid]
Notes:
A plasmid is used as a tool to insert genes into bacteria to stimulate the production of therapeutic proteins such as human insulin.
38. What is another important research area of biotechnology offers?
[A] optimum conditions for the catalyst
[B] pure form of catalyst
[C] an impure form of the catalyst
[D] purification of products
Show Answer
Correct Answer: A [optimum conditions for the catalyst]
Notes:
Optimum conditions for the catalyst is another important research area of biotechnology offers.
39. The best milch breed in the word is ____:
[A] Chittagong
[B] Holstein-Friesian
[C] Deoni
[D] Sindhi
Show Answer
Correct Answer: B [Holstein-Friesian]
Notes:
Holstein Friesian cows are world’s highest-production dairy animals and dominate the global dairy industry. These cows originated in Dutch provinces of North Holland and Friesland, and Schleswig-Holstein in Northern Germany. They are known as Holsteins in North America and Friesians in UK and Ireland.
40. Which of the following are the largest fixator of solar energy?
[A] Bacteria
[B] Protozoa
[C] Fungi
[D] Green plants
Show Answer
Correct Answer: D [Green plants]
Notes:
Plants and photosynthetic organisms utilize this solar energy in fixing large amounts of CO2 while amounts consumed by human beings are relatively small representing only 10% of the energy converted during photosynthesis. The process of photosynthesis in plants involves a series of steps and reactions that use solar energy, water, and carbon dioxide to produce organic compounds and oxygen.