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#Question id: 62


We can represent atoms by listing the number of protons, neutrons, and electrons—for example, 2p+, 2n0, 2e- for helium. Which of the following represents the 18O isotope of oxygen?

#SCPH05 I Biotechnology
  1. 7p+, 2n0, 9e-

  2. 8p+, 10n0, 8e-

  3. 9p+, 9n0, 9e-

  4. 10p+, 8n0, 9e-

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#Question id: 10402

#SCPH05 I Biotechnology

Photomorphogenic responses of phytochrome inhibited by

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#Question id: 12960

#SCPH06 I Botany

The Norway rat (Rattus Norvegicus), a widespread pest, was controlled for about a decade by the anticoagulant warfarin. This chemical substance, placed in food pellets, is absorbed by the intestinal tract and inhibits the clotting of blood. After a population decline for about 10 years, rat populations increased and stabilized. In one European population, as illustrated in the graph below, the percentage of rats resistant to warfarin has remained fairly stable over a number of years.

Resistance to warfarin is governed by a dominant autosomal gene, R. More than 15 percent of the resistant animals are heterozygous at this locus (Rr). The table below indicates the response to warfarin and relative reproductive fitness of individuals that are homozygous or heterozygous for the dominant gene (R). The RR individuals have a 20-fold increase in vitamin K requirement over individuals.

Fitness is a measure of the reproductive success of a particular genotype. The highest fitness is 1.00.
Which of the following is most likely correct concerning the gene for resistance to warfarin? 

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#Question id: 2292

#SCPH05 I Biotechnology

which one is not function of Golgi apparatus,

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#Question id: 923

#SCPH01 Biochemistry

 The conversion of palmitoyl-CoA (16:0) to myristoyl-CoA (14:0) and 1 mol of acetyl-CoA by the B-oxidation pathway results in the net formation of:

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#Question id: 3653

#SCPH06 I Botany

Cyclobutane pyrimidine dimers are formed by -------------from adjacent pyrimidines on one strand by cyclization of the double-bonded C5 and C6carbon atoms of each base to give a cyclobutane ring.