31. Emulsification is ____:
[A] Absorption of fats
[B] Breaking fats into small globules
[C] Storage of fats
[D] Digestion of fats
Show Answer
Correct Answer: B [Breaking fats into small globules]
Notes:
Emulsification is the breakdown of large fat globules into smaller, uniformly distributed particles. It is accomplished mainly by bile acids in the small intestine. Emulsification prepares fats and oils for chemical digestion by lipase. Into fatty acid and glycerol.
32. Bryophytes are often called as amphibian plant because they ____:
[A] Can eat insects
[B] Do not have habitat preference
[C] Appear like frog
[D] Are found both in water and on land
Show Answer
Correct Answer: D [Are found both in water and on land]
Notes:
Bryophytes are simple low growing plants, anchored to the ground or to tree bark by tiny filamentous rhizoids. They need presence of water for fertilization. They are characteristically limited in size and prefer moist habitats although they can survive in drier environments. The bryophytes consist of about 20,000 plant species.
33. Which of the following is a Dominant Autosomal Disorder?
[A] Phenyl Ketorunia
[B] Cystic Fibrosis
[C] Alzheimers Disease
[D] Albinism
Show Answer
Correct Answer: D [Albinism]
Notes:
In an autosomal dominant disorder, the mutated gene is a dominant gene located on one of the nonsex chromosomes (autosomes). The early-onset form of Alzheimer disease is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person inherits the altered gene from one affected parent.
34. Identify the part of brain that controls the maintenance of posture, balance and equilibrium.
[A] Diencephalon
[B] Brainstem
[C] Cerebrum
[D] Cerebellum
Show Answer
Correct Answer: D [Cerebellum]
Notes:
The cerebellum is important for making postural adjustments in order to maintain balance. Through its input from vestibular receptors and proprioceptors, it modulates commands to motor neurons to compensate for shifts in body position or changes in load upon muscles. So, it controls the maintenance of posture, balance and equilibrium.
35. Where is bile stored?
[A] Liver
[B] Kidney
[C] Gall bladder
[D] Spleen
Show Answer
Correct Answer: C [Gall bladder]
Notes:
Bile is a fluid that is produced continuously by the liver and stored and concentrated in the gall bladder. After eating, this stored bile is discharged into the duodenum. Bile helps with digestion by breaking down fats into fatty acids, which can be taken into the body by the digestive tract.
36. Which of these is the energy conversion that happens in the process called photo synthesis?
[A] Potential energy to chemical energy
[B] Light energy to chemical energy
[C] Heat energy to chemical energy
[D] Heat energy to light energy
Show Answer
Correct Answer: B [Light energy to chemical energy]
Notes:
During the process of photosynthesis, light penetrates the cell and passes into the chloroplast. The light energy is intercepted by chlorophyll molecules on the granal stacks. Some of the light energy is converted to chemical energy. During this process, a phosphate is added to a molecule to cause the formation of ATP.
37. Which are the largest fixator of solar energy?
[A] Protozoa
[B] Bacteria
[C] Fungi
[D] Green plants
Show Answer
Correct Answer: D [Green plants]
Notes:
Ecological productivity refers to the primary fixation of solar energy by green plants and the subsequent use of that fixed energy by plant-eating herbivores, animal-eating carnivores, and the detritivores that feed upon dead biomass. Ecologists refer to the productivity of green plants as primary productivity. The productivity varies depending on the nature of ecosystem and prevailing climatic conditions.
38. The transport of soluble products of photosynthesis is called ____:
[A] Concentration
[B] Transportation
[C] Translocation
[D] Transpiration
Show Answer
Correct Answer: C [Translocation]
Notes:
Transport of soluble products of photosynthesis is called translocation. Translocation of soluble products of photosynthesis occurs in the part of the vascular tissue known as the phloem. The phloem is the principle food conducting tissue associated with xylem in the vascular system.
39. Which of the following relation is true regarding the amounts of genetic material contributed by the father and mother to the child?
[A] Father > Mother
[B] Father < Mother
[C] Father = Mother
[D] No relation can be determined
Show Answer
Correct Answer: C [Father = Mother]
Notes:
A child inherits half their DNA from each parent, while each parent passes half their DNA to each child. This is achieved through sexual fertilization, requiring the meeting of the sperm with the egg, and the combining of the DNA from both (since the sperm and egg contain only half the genetic information in the parent). This ensures that families maintain some genetic identity, but also that a child must be genetically different from either parent, or from any of their four grandparents.
40. Hind limbs thumping on ground by a rabbit is a behaviour related to _____:
[A] Courtship
[B] Warning signal to members
[C] Preparation for a duet
[D] Surrender to a stronger opponent
Show Answer
Correct Answer: B [Warning signal to members]
Notes:
A thump of either a single hind leg or both together shows the rabbit’s fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.
