Acid producer microbe name Type of microbe Name of acid produced Aspergillus niger Fungus citric acid Acetobacter aceti bacterium acetic acid Clostridium butylicum Read More …
Category: Biology
Sheela starts sneezing and her nose starts running when she is exposed to Acacia pollens , as she is allergic to these pollens. This is caused due to a chemical released from the mast cells called: a) Alanine b) Histamine C) Leucine d) Cysteine
Histamine.
Explain how human insulin is produced using recombinant DNA technique.
Insulin consists of two short polypeptide chains: chain A and chain B, that are linked together by disulphide bridges. In humans, insulin is synthesised Read More …
What is a palindrome in a DNA? Describe the role of restriction enzymes on palindrome.
A palindrome in DNA is a sequence of base pairs that reads same on the two strands when orientation of reading is kept the Read More …
Give an account of adaptive radiation with an example from the Galapagos Islands.
The process of evolution of species in a given habitat (geographical area) starting from a point and radiating to other habitats is called Adaptive Read More …
A population census report 2009 – 2010 shows that a major section of the Goan population has migrated to western countries . Predict the effect on the Hardy – Weinberg equilibrium.
The Hardy – Weinberg equilibrium will change.
An alien piece of DNA in an organism needs to be linked to the origin of replication . Why?
The origin of replication is responsible for initiating replication.
In Ramu ‘s field , at Amona , small birds were often seen sitting on the backs of grazing cattle and pecking . Identify the type of interaction : a) Commensalism b) Mutualism c) Parasitism d) Predation
Mutualism.
Choose the correct alternative and rewrite: A. Restriction enzymes belong to a class of enzymes called : a) Proteases b) Chitinases c) Nucleases d) Cellulases
c) Nucleases
In an experiment on monohybrid cross a geneticist crossed dominant homozygous white mice with homozygous black mice . Using the punnet square , work out F1 & F2 generations and derive the phenotypic and genotypic ratio
Phenotypic ratio : All White, All Genotypic ratio : All Ww