List of top Biology Questions

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Proliferative Phase	i.	Breakdown of endometrial lining
b.	Secretory Phase	ii	Follicular Phase
c.	Menstruation	iii.	Luteal Phase

Which of the following gastric cells indirectly help in erythropoiesis ?

All of the following are part of an operon except

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA ?

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by

Which of these statements is incorrect ?

Nissl bodies are mainly composed of

Match the items given in Column I with those in Column II and select the correct option given below :

Column I (Function)		Column II (Part of Excretory System)
a.	Ultrafiltration	i.	Henle’s loop
b.	Concentration of urine	ii	Ureter
c.	Transport of urine	iii.	Urinary bladder
d.	Storage of urine	iv.	Malpighian corpuscle
		v.	Proximal convoluted tubule

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Glycosuria	i.	Accumulation of uric acid in joints
b.	Gout	ii	Mass of crystallised salts within the kidney
c.	Renal calculi	iii.	Inflammation in glomerul
d.	Glomerular nephritis	iv.	Presence of glucose in urine

Which of the following terms describe human dentition ?

Which of the following events does not occur in rough endoplasmic reticulum ?

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Tidal volume	i.	2500 – 3000 mL
b.	Inspiratory Reserve volume	ii	1100 – 1200 mL
c.	Expiratory Reserve volume	iii.	500 – 550 mL
d.	Residual volume	iv.	1000 – 1100 mL

The difference between spermiogenesis and spermiation is

The amnion of mammalian embryo is derived from

Hormones secreted by the placenta to maintain pregnancy are

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Tricuspid valve	i.	Between left atrium and left ventricle
b.	Bicuspid valve	ii	Between right ventricle and pulmonary artery
c.	Semilunar valve	iii.	Between right atrium and right ventricle

Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively ?

The contraceptive ‘SAHELI'

All of the following are included in ‘Ex-situ conservation’ except

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Eutrophication	i.	UV-B radiation
b.	Sanitary landfill	ii.	Deforestation
c.	Snow blindness	iii.	Nutrient enrichment
d.	Jhum cultivation	iv.	Waste disposal

Conversion of milk to curd improves its nutritional value by increasing the amount of

Which part of poppy plant is used to obtain the drug ‘‘Smack’’ ?

In a growing population of a country,