List of top Biology Questions

Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement :
The association of histone H1 with a nucleosome indicates
The final proof for DNA as the genetic material came from the experiments of :
Which one of the following plants reproduces vegetatively by epiphyllous buds?
Which one of the following is NOT a disadvantage of self pollination?
The highest rate of photosynthesis in green plants is in _____ and _____ region of light spectrum.
In Aulosira, Tolypothrix and Nostoc, _______ are the sites for nitrogen fixation.
Which one of the following statement is not valid for aerosols ?
A slender, prostrate subaerial branch of the stem which creeps along the ground helping in vegetative reproduction is
Fruit and leaf drop at early stages can be prevented by the application of:
A dioecious flowering plant prevents both :
Maximum cranial capacity is found in ________
One of the following is NOT an example of incomplete sex-linkage
Which one of the following process occurs inside the nucleus during protein synthesis in a eukaryotic cells ?
The prostatic fluid forms about ___________ of total volume of semen.
The vascular cambium normally gives rise to :
The function of copper ions in copper releasing IUD's is :
During anaerobic respiration, number of ATP molecules generated by the breakdown of 20 glucose molecule is _______
Which one of the following statement is not valid for aerosols ?
During glycolysis the compounds PGAL and DHAP are formed from fructose 1, 6 diphosphate by ________________
Mule is an example of _______
The ____________ is a primary constriction
Identify the microbial source for antibiotic streptomycin
Which of the following facilitates opening of stomatal aperture ?
Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur ?