Biology MCQs

31. The undigested food stored in the liver in the form of carbohydrates is called __
[A] Pulp
[B] Glucose
[C] Glycogen
[D] Carbohydrate

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32. What is the enzyme that breaks down lactose?
[A] Lipase enzymes
[B] Pepsin
[C] Amylase
[D] Lactase

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33. The Leydig cells which are found in the human body are the secretory source of __
[A] Glucagon
[B] Intestinal mucus
[C] Androgens
[D] Progesterone

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34. What happens when the luteinizing hormone increases?
[A] stimulates contraction of uterus
[B] ovaries to release eggs
[C] maintains milk production in breasts
[D] All of the above

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35. Ovum receives the sperm in the region of__
[A] Animal pole
[B] the Equator
[C] Vegetal pole
[D] Pigmented area

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36. The root nodules for nitrogen fixation of a non-legume tree are?
[A] Frankia
[B] Rhizobium
[C] Azotobacter
[D] Thiobacillus

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37. Which inhibits the translation of mRNA?
[A] increase
[B] knock out
[C] clearing
[D] silencing

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38. Which of the following is a mobile genetic element?
[A] virus
[B] bacteria
[C] Transposons
[D] insertion sequence

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39. Which organism’s plasmid was first used to construct recombinant DNA?
[A] Cyanobacteria
[B] Bacillus subtilis
[C] Saccharomyces cerevisiae
[D] Salmonella typhimurium

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40. Saprophytes are the organisms which depend for food on
____:
[A] Inorganic chemical compounds
[B] Living plants
[C] Living animals
[D] Dead and decaying material

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