Biology MCQs

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MON 863 is a genetically engineered variety of maize produced by Monsanto. It was generated by transformation of Zea mays cell culture line AT824 with a MIuI restriction fragment from plasmid PV-ZMIR13 using particle acceleration technology.

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Fats are slowest but most energy-efficient source of food. Each gram of fat provides more energy on oxidation (and thus more ATPs).

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Overdose of antibiotics will cause the suppression of synthesis biotin in human body. Biotin is also known as vitamin H, vitamin B₇ or vitamin B₈ and is involved in a wide range of metabolic processes, primarily related to the utilization of fats, carbohydrates, and amino acids.

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Reptiles and Amphibians have a mixed heart.

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The primary reason why fruits ripen quicken when stored in a rice container is due to ethylene accumulation. Differences in the rate of ripening between fruits kept in a rice container and a wheat container might be due to the differences in carbon dioxide emission and self heating nature of these grains. Both wheat and rice grains (esp. brown rice) when not completely milled, still actively respire, thus releasing carbon dioxide and energy. Carbon dioxide is a known inducer of ethylene biosynthesis in a number of fruits e.g. tomato. Rice grains without a husk typically have no dormancy and thus respire more at normal storage conditions. Most wheat grains have moderate to high dormancy periods and respire less at normal storage conditions. This is the reason why fruits stored in a rice container ripen faster than the ones stored in a wheat container

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Correct answer is beta-amylase. Regarding amylase there is an interesting fact that it has proved its role in Human evolution. The salivary amylase levels found in the human lineage are six to eight times higher in humans than in chimpanzees, which are mostly fruit eaters and ingest little starch relative to humans.

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The order Primata includes monkey, gorilla and man and the order Carnivora includes lion, tiger, cat and dog. These two orders are the members of the same class called Mammalia. So, man, monkey and tiger are in the same class.

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Cattle quickly swallow grass and store it in rumen. The rumen serves as a large fermentation vat in which bacteria and other microorganisms reside. The rumen, also known as a paunch, forms the larger part of the reticulorumen

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The nutritional status of a large number of children can be calculated by knowing their body mass index .It is a physical measurement used to assess total amount of body fat. It is calculated by dividing your weight in kilograms (kg) by the square of your height in metres (m²). Depending on the BMI value calculated, one may be underweight, normal weight, overweight or obese.

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Ductless glands which are also known as internally secreting glands or endocrine glands secrete their products or hormones directly into the blood stream in response to instructions from the brain.