31. A tube that allows urine to pass out of the body __
[A] penis
[B] urethra
[C] scrotum
[D] All of the above
Show Answer
Correct Answer: B [urethra]
Notes:
A tube that allows urine to pass out of the body’s urethra. It is a long tube that runs through the penis.
32. What are the symptoms of malaria?
[A] fever and flu-like illness
[B] including shaking chills
[C] muscle aches
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Fever and flu-like illness, including shaking chills, and muscle aches are the symptoms of malaria.
33. Azolla enriches rice fields with nitrogen due to its association with?
[A] Anabaena
[B] Nostoc
[C] Rhizobium
[D] Frankia
Show Answer
Correct Answer: A [Anabaena]
Notes:
Azolla enriches rice fields with nitrogen due to its association with Anabaena.
34. A method for the delivery of nucleic acids to cells by high-speed particle bombardment is called?
[A] Transformation
[B] Biolistics
Biolistics
[C] Sequencing
[D] None of these
Show Answer
Correct Answer: B [Biolistics
Biolistics]
Notes:
A method for the delivery of nucleic acids to cells by high-speed particle bombardment is called Biolistics.
35. Which of the following protein is found in nails?
[A] Keratin
[B] Histone
[C] Actin
[D] Elastin
Show Answer
Correct Answer: A [Keratin]
Notes:
Keratin is a family of fibrous structural proteins that is the key structural component of hair and nails. It is also the key structural material making up the outer layer of human skin. Besides, it provides the necessary strength and toughness for masticatory organs, such as the tongue.
36. _____ is the study of the microanatomy of cells, tissues and organs as seen through a microscope:
[A] Entomology
[B] Paleontology
[C] Histology
[D] Lchthyology
Show Answer
Correct Answer: C [Histology]
Notes:
Histology is the study of the micro anatomy of cells, tissues, and organs as seen through a microscope. It examines the correlation between structure and fun-ction.Histology is the micro-scopic counterpart to gross anatomy which looks at larger structures visible without a microscope.
37. The reagent used to test the presence of starch in leaves is ____:
[A] Millions reagent
[B] Fehlings solution
[C] Benedicts solution
[D] Iodine solution
Show Answer
Correct Answer: D [Iodine solution]
Notes:
The Iodine test is used to test for the presence of starch. Iodine solution– here iodine dissolved in an aqueous solution of potassium iodide and reacts with the starch producing a purple black color.
38. Element that is not found in blood is ___:
[A] Copper
[B] Iron
[C] Chromium
[D] Magnesium
Show Answer
Correct Answer: C [Chromium ]
Notes:
In the blood the key minerals are iron, copper, zinc, sodium, potassium, calcium and magnesium. Minerals constitute important part of blood plasma that constitutes almost 55% of blood. In the blood, iron is found in larger amounts than any other mineral.
39. Haemoglobin has highest affinity for ____:
[A] Carbon monoxide
[B] Nitrogen
[C] Oxygen
[D] Carbon dioxide
Show Answer
Correct Answer: C [Oxygen]
Notes:
Haemoglobin is the iron-containing oxygen-transport metaloprotein in the red blood cells. It is responsible for binding oxygen in the lung and transporting the oxygen throughout the body to be used up in aerobic metabolic pathways.
40. Green manure is obtained from ___:
[A] Fresh animal excreta
[B] Decomposing green legume plants
[C] Domestic vegetable waste
[D] Oil seed husk cakes
Show Answer
Correct Answer: B [Decomposing green legume plants]
Notes:
Green undecomposed material used as manure is called green manure. It is obtained in two ways: by growing green manure crops or by collecting green leaf (along with twigs) from plants grown in wastelands, field bunds and forest.
