Recent questions in Biology

Respiratory Volumes and Capacities : 1. Inspiratory Reserve Volume (IRV): Additional volume of air, a person can inspire by a forcible inspiration. 2. Expiratory Reserve Volume (ERV): Additional volume of air, a person can expire by a forcible expiration. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Respiratory Volumes and Capacities : Tidal Volume (TV): 1. Volume of air inspired or expired during a normal respiration. 2. It is approx. 500 mL., i.e., a healthy man can inspire or expire approximately 600 to 800 mL of air per minute Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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The volume of air involved in breathing movements can be estimated by using a _ which helps in _______ .

asked Apr 3, 2014 by pady_1

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1. Human have the ability to increase the strength of inspiration and expiration with the help of additional muscles in the abdomen. 2. On an average, a healthy human breathes 12-16 times/minute. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Choose the correct statement regarding inspiration and expiration :

asked Apr 3, 2014 by pady_1

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1. Breathing involves two stages - inspiration during which atmospheric air is drawn in and expiration by which the alveolar air is released out. 2. The movement of air into and out of the lungs is independent of the pressure gradient between the lungs and the atmosphere. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding Human Respiratory system - choose the incorrect one :

asked Apr 3, 2014 by pady_1

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1. Humans have two lungs which are covered by a double layered pleura, with pleural fluid between them. 2. Pleural fluid reduces friction on the lung surface Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding Human Respiratory system - choose the incorrect one :

asked Apr 3, 2014 by pady_1

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The saliva secreted into the oral cavity contains (choose the appropriate statement) :

asked Apr 3, 2014 by pady_1

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Incorrect statement regarding the pancreas is :

asked Apr 3, 2014 by pady_1

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1. The hepatic lobules are the structural and functional units of liver containing hepatic cells arranged in the form of clusters or nests. 2. The bile secreted by the hepatic cells passes through the hepatic ducts and is stored and concentrated in a thin muscular sac called the cystic duct. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding liver - choose the correct statement :

asked Apr 3, 2014 by pady_1

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Saliva is mainly produced by _ . These glands situated _ the buccal cavity.

asked Apr 3, 2014 by pady_1

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The accessory digestive glands include :

asked Apr 3, 2014 by pady_1

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1. Mucosal epithelium has goblet cells which secrete mucus that help in lubrication. 2. Mucosa forms crypts in between the bases of villi in the intestine called crypts of Lieberkuhn. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Villi are supplied with :

asked Apr 3, 2014 by pady_1

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1. The cells lining the villi in the small intestine produce numerous microscopic projections called microvilli giving a brush border appearance. 2. These modifications increase the surface area enormously for absorption. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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The innermost layer lining the lumen of the alimentary canal is _ , which forms in the stomach and _____ in the small intestine. (choose the appropriate option) :

asked Apr 3, 2014 by pady_1

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The submucosal layer in duodenum -

asked Apr 3, 2014 by pady_1

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1. The colon is divided into three parts an ascending, a transverse and a descending part. 2. The ascending part opens into the rectum which opens out through the anus. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Regarding large intestine :

asked Apr 3, 2014 by pady_1

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_ regulates the opening of oesophagus into the stomach. The opening of the stomach into the duodenum is guarded by __ .

asked Apr 3, 2014 by pady_1

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All are parts of Small intestine except:

asked Apr 3, 2014 by pady_1

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Choose the appropriate statement regarding stomach : stomach has

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Regarding upper digestive system, choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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_______ is Diarrhoea. (choose the appropriate statement) :

asked Apr 3, 2014 by pady_1

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Regarding Indigestion, choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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Regarding the DISORDERS OF DIGESTIVE SYSTEM : 1. In Jaundice: The liver is affected, skin and eyes turn yellow due to the deposit of bile salts. 2. In Constipation : The faeces are retained within the rectum as the bowel movements occur irregularly.

asked Apr 3, 2014 by pady_1

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Regarding the DISORDERS OF DIGESTIVE SYSTEM : 1. The inflammation of the intestinal tract is the most common ailment due to bacterial or viral infections. 2. The infections are also caused by the parasites of the intestine like tapeworm, roundworm, threadworm, hookworm, pin worm, etc.

asked Apr 3, 2014 by pady_1

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Regarding the tongue, choose the incorrect statement :

asked Apr 3, 2014 by pady_1

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The hard chewing surface of the teeth,

asked Apr 3, 2014 by pady_1

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Arrangement of teeth in each half of the upper and lower jaw in the order I, C, PM, M is represented by a dental formula which in human is

asked Apr 3, 2014 by pady_1

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Regarding Food choose the correct statement :

asked Apr 3, 2014 by pady_1

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Regarding ALFONSO CORTI choose the correct statement :

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Choose the incorrect statement:

asked Apr 3, 2014 by pady_1

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Assertion (A): Only one sperm can fertilise an ovum. Reason (R): During fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of additional sperms. Regarding (A) and (R):

asked Apr 3, 2014 by pady_1

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1. The process of fusion of a sperm with an ovum is called fertilisation. 2. During fertilisation, a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Assertion (A): All copulations lead to fertilisation and pregnancy. Reason (R): Fertilisation can occur if the ovum and sperms are transported simultaneously to the ampullary-isthmic junction. Regarding (A) and (R):

asked Apr 3, 2014 by pady_1

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Assertion (A): In the absence of fertilisation menstruation occurs. Reason (R): The corpus luteum degenerates. This causes disintegration of the endometrium leading to menstruation. Regarding (A) and (R):

asked Apr 3, 2014 by pady_1

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1. During pregnancy some events of the menstrual cycle continue to occur. 2. But there is no menstruation. Regarding 1 and 2 :

asked Apr 3, 2014 by pady_1

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Assertion (A): Ovulation occurs during early menstrual cycle. Reason (R): Rapid secretion of LH leading to its maximum level called LH surge induces rupture of Graafian follicle and thereby the release of ovum. Regarding (A) and (R):

asked Apr 3, 2014 by pady_1

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In the middle of the menstrual cycle :

asked Apr 3, 2014 by pady_1

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Regarding the secretion of gonadotropins in menstrual cycle- choose the incorrect one :

asked Apr 3, 2014 by pady_1

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Regarding follicular phase - choose the incorrect one :

asked Apr 3, 2014 by pady_1

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Regarding menstrual cycle - choose the incorrect one :

asked Apr 3, 2014 by pady_1

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Ovulation is : (choose the most appropriate option)

asked Apr 3, 2014 by pady_1

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Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The deficiency of calcium symptoms first appear in the apical region}\\\text{Reason:Calcium is highly mobile in plants}\end{array}$

asked Apr 3, 2014 by sreemathi.v

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Match the items in column I with items in column II:

asked Apr 3, 2014 by sreemathi.v

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Match the items in column I with items in column II:

asked Apr 3, 2014 by sreemathi.v

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