31. Usually, a decrease in the amount of oxygen in the blood will result in ___ of the skin.
[A] Cyanosis
[B] Jaundice
[C] Paleness
[D] Flushing
Show Answer
Correct Answer: A [Cyanosis]
Notes:
Usually, a decrease in the amount of oxygen in the blood will result in Cyanosis of the skin.
32. To which one of the following categories does the adipose tissue belong?
[A] Connective
[B] Epithelial
[C] Neural
[D] Muscular
Show Answer
Correct Answer: A [Connective]
Notes:
Adipose tissue is a type of loose connective tissue that belongs to the class of connective tissue.
33. Which part of the brain controls body temperature and desire to eat?
[A] thalamus
[B] cerebellum
[C] pons
[D] hypothalamus
Show Answer
Correct Answer: D [hypothalamus]
Notes:
The limbic system of the hypothalamus that connects it to the cerebral cortex is the center of emotions, drives, and instincts including hunger and satiety. It helps in maintaining a constant temperature of the human body by regulating the diameter of blood vessels, the tremor, and the sweating mechanism.
34. This plasma protein is responsible for blood clotting:
[A] Fibrinogen
[B] Globulin
[C] Serum amylase
[D] Albumin
Show Answer
Correct Answer: A [Fibrinogen]
Notes:
Fibrinogen is a protein produced by the liver. This protein helps stop bleeding by helping the blood clot form. It is a glycoprotein complex.
35. Which of the following statements is true about the human liver?
[A] Liver is triangular in shape
[B] Liver is the only visceral organ that can regenerate
[C] Liver is the largest and the internal organ of the human body
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
The liver is triangular in shape, the only visceral organ that can regenerate and the largest and internal organ of the human body.
36. What can be associated with the theory of evolution?
[A] Charles Darwin
[B] Mendel
[C] Stanley Miller
[D] Harold Urey
Show Answer
Correct Answer: A [Charles Darwin]
Notes:
Charles Darwin can be associated with the theory of evolution. Evolution is the change in the characteristics of a species over several generations and depends on the process of natural selection.
37. ____ being a higher category, is the assemblage of families which exhibit a few similar characters:
[A] Class
[B] Species
[C] Genus
[D] Order
Show Answer
Correct Answer: D [Order]
Notes:
Order is an assemblage of families which exhibit a few similar characters. The similar characters are less in number as compared to different genera included in a family. A class includes one or more orders.
38. Both, haemoglobin and myoglobin require ____ for formation:
[A] Vitamin A
[B] Vitamin B12
[C] Iron
[D] Calcium
Show Answer
Correct Answer: C [Iron]
Notes:
Haemoglobin is called as tetrameric hemoprotein, while myoglobin is called monomeric protein. Haemoglobin is found systematically all over the body, while myo-globin is found in muscles tissues only. The body requires iron for the synthesis of its oxygen transport proteins, in particular hemo-globin and myoglobin.
39. Protein part of enzyme is known as ____:
[A] Isoenzyme
[B] Holoenzyme
[C] Apoenzyme
[D] All of the above
Show Answer
Correct Answer: C [Apoenzyme]
Notes:
Enzymes are defined as biological catalysts. Chemically all enzymes are globular proteins. Each enzyme catalyses only one chemical reaction. Protein part of enzyme is known as Apoenzyme. It forms an active enzyme system by combination with a coenzyme and determines the specificity of this system for a substrate.
40. A molecule in plants comparable to haemoglobin in animals is ____:
[A] Carotene
[B] Chlorophyll
[C] Cellulose
[D] Cytochrome
Show Answer
Correct Answer: B [Chlorophyll]
Notes:
Haemoglobin is the iron-containing oxygen transporting metalloprotein in the red blood cells of all vertebrates. Similarly, Cytochromes are, in general, membrane-bound haemo-proteins containing heme groups and are primarily responsible for the generation of ATP via electron transport.
