List of top Biology Questions

In Turner's Syndrome, during cell division, which type of Aneuploidy is seen?
Sex- determination, in Humans is identified by :
Choose the correct option which can be used by the females as injections or implants under the skin for emergency contraceptives from the following: (i) progestogens (ii) progestogen+ estrogen combinations (iii) estrogen (iv) progestagens
In females, MTP's are considered relatively safe during ______ weeks of pregnancy.
During Human fertilization, this induces changes and acts as a barrier, and ensure that only one sperm can enter and fertilize the ovum.
These hormones are produced in women during pregnancy only :
Choose the correct sequence of transport at sperms in human from seminiferous tubules is:
In a microsporangium, which layer is generally having more than one nucleus?
What indicates 'X' and 'Y' in the following diagram?
At which trophic level, you will keep the species 'sparrow'?
In a particular condition, the decomposition rate is slower if detritus is rich in and ____.
A few organisms can tolerate and thrive in a wide range at temperatures. they are known as:
____and ____ are the two basic processes that contribute to an increase in population density.
Choose the correct option showing population interactions
Alexander Fleming was the first person to discover 'Penicillin' by chance. He worked on which bacterium?
Choose the correct option showing population interactions
What is ecological succession? Name various seral stages from pioneer species to climax community with suitable example in hydrarch succession.
How many pairs of autosomal chromosomes are there in normal humans?
In a denaturing polyacrylamide gel electrophoresis experiment, pure intact adult human hemoglobin will yield (number) bands.
In a randomly mating population, the frequency of 'A' allele is 0.7. What is the frequency of An" genotype in the next generation according to Hardy- Weinberg's law? (up to two decimal places)
In an actively growing population from a single bacterium, 1,048,576 cells are present after 20th generation. How many cells were there in 5th generation?
How many GTP molecules are required for the translocation of tRNA from P site to E site during translation elongation process in bacteria?
Which of the following is involved in innate immune response in higher mammals?
Which among the following belongs to the family "Retroviridac"?
Which of the following is a glycolipid?