31. The auditory nerve carries:
[A] Smell information
[B] Taste information
[C] Balance information
[D] Sound information
Show Answer
Correct Answer: D [Sound information]
Notes:
The auditory nerve carries Sound information. The acoustic nerve is a sensory nerve essential for hearing. It is also called the cochlear nerve.
32. What type of muscle is primarily found in your digestive tract?
[A] Rectus abdominus
[B] Cardiac Muscle
[C] Smooth Muscle
[D] Gastric Muscle
Show Answer
Correct Answer: C [Smooth Muscle]
Notes:
Smooth muscle, unlike skeletal muscle, is not under voluntary control and is found in walls of most organs and structures that contain muscle such as the esophagus, stomach, intestines, bronchi, uterus, urethra, and blood vessels. This muscle type’s responsibility is the contraction and relaxation necessary for the grinding and churning in the digestion process.
33. Which of the following conveys the longest-lasting immunity to an infectious agent?
[A] Active immunity
[B] Passive immunity
[C] Both 1 and 2
[D] None of the above
Show Answer
Correct Answer: A [Active immunity]
Notes:
Active immunity conveys the longest-lasting immunity to an infectious agent. Active immunity results when exposure to a disease organism activates the immune system to produce antibodies against that disease.
34. Which of these statements is not true regarding the function of hormones?
[A] Reproduction and sexual differentiation
[B] Maintenance of internal environment
[C] Maintain body temperature
[D] Development and growth
Show Answer
Correct Answer: C [Maintain body temperature]
Notes:
Hormones are released by specialized cells of the endocrine glands and act on distant target cells. One hormone can contribute to many functions and sometimes several hormones can perform the same function.
35. Which disease is caused by Yersinia pestis?
[A] Pertussis
[B] Plague
[C] Leprosy
[D] Diptheria
Show Answer
Correct Answer: B [Plague]
Notes:
Plague disease is caused by Yersinia pestis bacterium which is spread mostly by fleas on rodents and other animals.
36. Green Revolution related to which of the following?
[A] Milk
[B] Agriculture
[C] Water
[D] Animals
Show Answer
Correct Answer: B [Agriculture]
Notes:
Green Revolution related to Agriculture. It took place between 1950-1960 and focused mainly on increasing agricultural production and started in Mexico.
37. Which chemical is used to obtain a precipitate of pure DNA?
[A] Methanol
[B] Ether
[C] HCl
[D] Ethanol
Show Answer
Correct Answer: D [Ethanol]
Notes:
Ethanol is used to obtain a precipitate of pure DNA. Renewable fuel made from corn and other plant materials is called ethanol.
38. Activity of an enzyme can be modulated by change of
____:
[A] pH
[B] Light
[C] Humidity
[D] Rainfall
Show Answer
Correct Answer: A [pH]
Notes:
Changes in pH which can accompany metabolic process such as respiration (aerobic glycolysis for example) can alter the conformation of an enzyme and hence enzyme activity such as salivarya mylase is effective in neutral condition, pepsin in acidic condition l.5 (less than pH 7) and trypsin in basic condition (more than pH 7).
39. BT seed is associated with ____:
[A] Rice
[B] Cotton
[C] Wheat
[D] Oil seeds
Show Answer
Correct Answer: B [Cotton]
Notes:
Cotton is the most popular of the BT crops. In BT cotton, BT gene was isolated and transferred from a bacterium Bacillus thurigiensis to American cotton. The American cotton was subsequently crossed with Indian cotton to introduce the gene into native varieties. The BT cotton variety contains a foreign gene obtained from Bacillus thuringiensis. This bacterial gene, introduced genetically into the cotton seeds, protects the plants from bollworm (A. lepidoptora), a major pest of cotton.
40. The largest White Blood Corpuscle is ____:
[A] Lymphocyte
[B] Monocyte
[C] Thrombocyte
[D] Erythrocyte
Show Answer
Correct Answer: B [Monocyte]
Notes:
Monocytes are the largest white blood cell about 20m in diameter. When they leave the blood they’re called macrophages. Macrophages work with lymphocytes as antigen presenting cells.
