Monomeric Ras proteins are GTPase “switch” proteins. Ras activation is accelerated by: 

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#Question id: 12551

#Unit 10. Ecological Principles

Which of the following examples would most accurately measure the density of the population being studied? 

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#Question id: 19709

#Unit 3. Fundamental Processes

Following are statements related to the telomere related to the stability chromosome

a) protecting the ends of chromosomes from degradation 

b) preventing chromosomal end fusion

c) protect genome from nucleolytic degradation

d) provide a mechanism for their replication by semiconservative length maintenance 

choose the correct statement 

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#Question id: 12696

#Unit 8. Inheritance Biology

The following is a schematic representation of region of the chromosome of fly along with extent of six deletions (Del 1 to Del 6); 

When flies homozygous for the recessive mutations are crossed with flies heterozygous for the deletions, the following results are obtained, in which "m" represents a mutant phenotype and a plus sign (+) represents the wild type. On the basis of these data, determine the relative order of the seven mutant eenes on the chromosome. 

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#Question id: 2333

#Unit 2. Cellular Organization

Which portion of a phospholipid molecule is repelled by water?

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#Question id: 12964

#Unit 10. Ecological Principles

Where would an ecologist find the most phytoplankton in a lake?