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MTTC BIOLOGY QUESTIONS AND ANSWERS LATEST UPDATE
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MTTC BIOLOGY QUESTIONS AND ANSWERS LATEST UPDATE
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MTTC BIOLOGY QUESTIONS ANDANSWERS LATEST UPDATE
adipose tissue Answer: a type of connective tissue whose cells get expanded with fat droplets and
the nucleus and cytoplasm of the cell are pushed towards edges to form a ring-like structure. It provides
insulation, stores fat, and gives protection.
agarophyte Answer: a sea weed from which agar is produced
Aggradation Answer: the accumulation of sediments resulting in an elevation of land. It occurs when
the deposition of sediments exceeds the amount of material the system can support.
alkaptonuria Answer: an inherited condition that causes urine to turn black when exposed to air
due to an absence of homogentisate dioxygenase. Ochronosis, a buildup of dark pigment in connective
tissues such as cartilage and skin, is also characteristic of the disorder
altruism Answer: a behavior by an animal that benefits other members of its species
anabolism Answer: the synthesis of complex molecules from simpler molecules
Angiotensin Answer: an oligopeptide involved in regulating blood pressure. It increases blood
pressure by enhancing vasoconstriction.
Angiotensinogen Answer: a serum globulin produced by the liver. It is the precursor of angiontensin,
which regulates blood pressure.
Anterior pituitary gland Answer: Secretes FSH, luteinising hormone, prolactin, thyroid stimulating
hormone, adrenocorticotrophic hormone and GH
,antidiuretic hormone Answer: secreted by the posterior pituitary. aka vasopressin. it functions to
retain water in the body and to constrict blood vessels, thereby raising blood pressure. It does this by
increasing water reabsorption in the collecting duct of the nephron
antigen presentation Answer: a process of the immune system in which cells convey information
through fragments of intracellular components being presented on the cell surface on major
histocompatibility complex molecules
aphotic zone Answer: includes the bathypelagic, abyssopelgic, mesopelagic, and hadopelagic zones
aquaporin Answer: membrane proteins that selectively conduct water molecules in and out of the
cell. influenced by vasopressin
aqueous humor Answer: the liquid that is present in the space between the cornea and the lens of
the eye
aquifer Answer: the rocky body through which ground water flows
artesian well Answer: a well drilled into an aquifer that has sufficient hydrostatic pressure to force
water up into it
arthopod Answer: an invertebrate animal gavin an exoskeleton, a segmented body, and jointed
appendages
B cells Answer: Bone marrow cells; adaptive immune response; responsible for immunity related to
antibodies; recognize non-self antigens during antigen presentation; produce large quantities of
antibodies which then neutralize foreign objects
, basophil granulocyte Answer: least common of the granulocytes; stain dark blue; store and secrete
histamine, heparin, kinins and leukotrienes when stimulated; can be found in high numbers at sites of
ectoparasite infection; play a role also in allergies
Benthic Zone Answer: Lowest area in a body of water. Organisms living in this zone are called
benthos.
biosphere Answer: includes the entire ecosystem, it defines the behavior and interaction of
organisms with elements present in the hydrosphere, lithosphere, and atmosphere
caecum Answer: a small sac at the beginning of the large intestine that contains some microbes into
which the ileum of the small intestine opens
calcicole Answer: a plant that grows well in calcareous soil (lime-rich)
calcifuges Answer: plants that cannot tolerate more calcium, so they are not capable of living in
lime-rich soil
Carbonization Answer: A type of petrification in which carbon compounds are deposited in place of
original dead matter
carboxypeptidase Answer: secreted by the pancreas; cleaves peptide bonds at the carboxyl terminal
cardinal genes Answer: in drosophilia, responsible for coordinating the segmentation process. they
are the pattern forming genes that give signal for anterior-posterior and dorsal-ventral segmentation
during the development
cardiolipin Answer: glycerophospholipid that is seen in high concentrations in the inner membrane
of the mitochondria. It's concentration is very low in the plasma
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