Recent questions tagged 2017

Which cells of ‘Crypts of Lieberkuhn’ secrete antibacterial lysozyme ?

asked Aug 21, 2018 by pady_1

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The hepatic portal vein drains blood to liver from :

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Among the following characters, which one was not considered by Mendel in his experiments on pea ?

asked Aug 21, 2018 by pady_1

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A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent ?

asked Aug 21, 2018 by pady_1

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Mycorrhizae are the example of :

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Homozygous purelines in cattle can be obtained by :

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Myelin sheath is produced by :

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Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement

asked Aug 21, 2018 by pady_1

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Which of the following represents order of ‘Horse’ ?

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Hypersecretion of Grwoth Hormone in adults does not cause further increase in height, because :

asked Aug 21, 2018 by pady_1

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What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis ?

asked Aug 21, 2018 by pady_1

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Good vision depends on adequate intake of carotene rich food. Select the best option from the following statements. (a) Vitamin A derivatives are formed from carotene. (b) The photopigments are embedded in the membrane discs of the inner segment (c) Retinal is derivative of Vitamin A (d) Retinal is a light absorbing part of all the visual photopigments

asked Aug 21, 2018 by pady_1

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Which among these is the correct combination of aquatic mammals ?

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Receptor sites for neurotransmitters are present on

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Which one from those given below is the period for Mendel’s hybridization experiments ?

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Attractants and rewards are required for :

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Double fertilization is exhibited by :

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Out of ‘X’ pairs of ribs in humans only ‘Y’ pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation :

asked Aug 21, 2018 by pady_1

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Which of the following in sewage treatment removes suspended solids ?

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Which one of the following is related to Ex-situ conservation of threatened animals and plants ?

asked Aug 21, 2018 by pady_1

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An important characteristic that Hemichordates share with Chordates is :

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The genotypes of a Husband and Wife are $I^A I^B$ and $I^A i$. Among the blood types of their children, how many different genotypes and phenotypes are possible?

asked Aug 21, 2018 by pady_1

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The water potential of pure water is :

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Which of the following statements is correct?

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Which of the following is correctly matched for the product produced by them ?

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Capacitation occurs in :

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The DNA fragments separated on an agarose gel can be visualised after staining with :

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MALT constitutes about ________ percent of the lymphoid tissue in human body

asked Aug 21, 2018 by pady_1

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Phosphoenol pyruvate (PEP) is the primary $CO_2$ acceptor in :

asked Aug 21, 2018 by pady_1

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Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen ?

asked Aug 21, 2018 by pady_1

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The process of separation and purification of expressed protein before marketing is called :

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The function of copper ions in copper releasing IUD's is :

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Identify the wrong statement in context of heartwood :

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The region of Biosphere Reserve which is legally protected and where no human activity is allowed is known as :

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Select the mismatch :

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Match the following sexually transmitted diseases (Column â€“ I) with their causative agent (Column â€“ II) and select the correct option

asked Aug 21, 2018 by pady_1

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Presence of plants arranged into well defined vertical layers depending on their height can be seen best in :

asked Aug 21, 2018 by pady_1

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Select the mismatch :

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Artificial selection to obtain cows yielding higher milk output represents :

asked Aug 21, 2018 by pady_1

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Transplantation of tissues/ organs fails often due to non-acceptance by the patient's body. Which type of immuneresponse is responsible for such rejections?

asked Aug 21, 2018 by pady_1

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Which statements is wrong for Krebs' cycle?

asked Aug 21, 2018 by pady_1

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Life cycle of Ectocarpus and Fucus respectively are :

asked Aug 21, 2018 by pady_1

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Anaphase Promoting Complex (APC) is protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur ?

asked Aug 21, 2018 by pady_1

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Which of the following facilitates opening of stomatal aperture ?

asked Aug 21, 2018 by pady_1

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If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered ?

asked Aug 21, 2018 by pady_1

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Select the correct route for the passage of sperms in male frogs :

asked Aug 21, 2018 by pady_1

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During DNA replication, Okazaki fragments are used to elongate

asked Aug 21, 2018 by pady_1

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Which of the following RNAs should be most abundant in animal cell ?

asked Aug 21, 2018 by pady_1

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Adult human RBCs are enucleate. Which of the following statements(s) is / are most appropriate explanation for this feature ? (a) They do not need to reproduce (b) They are somatic cells (c) They do not metabolize (d) All their internal space is available for oxygen transport

asked Aug 21, 2018 by pady_1

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Viroids differ from viruses in having

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