Biology Today — December 2017
The five basic modes of locomotion are: running (in deer, cheetah, etc.), burrowing (in moles, rodents and rabbits), tree-climbi ...
(i) Became more numerous. (ii) Progressed from simple to more complex forms. (iii) Many transitional forms have been discovered ...
Appalachian Revolution (Some loss of fossils) Paleozoic (Age of ancient life) Permian Rise of continents, climate became ari ...
(iii) Cytochrome C : This is an electron-carrier protein found in ETC of mitochondria of all living organisms. Its amino acid se ...
First photosynthetic organisms to appear on earth were (a) bacteria (b) green algae (c) cyanobacteria (d) bryophytes. Resemblan ...
(c) nucleotides, amino acids, nucleic acids, enzymes (d) enzymes, amino acids, proteins, nucleic acids. Which of the following ...
Total Marks : 160 Time Taken : 40 Min. T his specially designed column enables students to self analyse their extent of understa ...
Consider the following statements and select the correct option stating which ones are true (T) and which ones are false (F). ( ...
Arrange the following ecosystems in descending order depending upon the net primary productivity. (i) Temperate coniferous fore ...
A B C D (a) Squirrel Dog Tortoise Crow (b) Rat Cat Bat Pigeon (c) Deer Squirrel Rat Crow (d) Deer Rabbit Frog Rat Changes durin ...
SECTION - A Name the technique developed by Kary Mullis. What is the objective of this technique? What is the role of ethidium ...
How is gene therapy being used in treating ADA deficient patients? What are bioreactors? List five growth conditions that a bio ...
Exonucleases Endonucleases (i) They remove nucleotides from terminal ends of DNA strand. They make cut at specific positions wit ...
A bioreactor is a vessel in which raw materials are biologically converted into specific products by microbes, plant and animal ...
stem, where it can cause a cancerous growth known as a crown gall. The bacterium, which infects dicotyledonous plants only, cont ...
(ii) Insertion of the isolated gene in a suitable vector to obtain recombinant DNA. (iii) Introduction of the recombinant DNA in ...
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valuable proteins have been transferred into rabbits, interleukin 2, growth hormone, tissue plasminogen activator, a 1 antitryps ...
How many of the following statements are true in context of human genome? I. There are 1.4 million SNPs. II. 99.9% genome is si ...
Diagram represents“flow of information in the cell”. Choose correct combination of labels. (A) Replication (E) (D) (C) (B) (a) ...
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