A copy of the gene encoding enzyme, which is the rate-limiting enzyme in the normal tryptophan biosynthetic pathway is,

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#Question id: 10316

#Unit 6. System Physiology – Plant

Succinate dehydrogenase an enzyme is inhibited by  Malonate and Oxaloacetate, which of the following graph represents the correct competitve inhibition  of enzyme with these inhibitors?   

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#Question id: 2167

#Unit 2. Cellular Organization

Polarized cells in animals

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#Question id: 18779

#Unit 13. Methods in Biology

Flow-cytometric analysis for the detection and measurement of subpopulations of leukocytes, including those of leukaemia, is usually performed using monoclonal antibodies. Why is this the case?

Choose whether each of the following statements is true 

a) Indirect immunofluorescence is a more sensitive technique than direct immunofluorescence

b) Most antigens induce a polyclonal response. 

c) For precipitation to occur, both antigen and antibody must be multivalent.

d) ELISA tests using chemiluminescence are more sensitive than chromogenic ones and precipitation tests are more sensitive than agglutination tests

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#Question id: 23662

#Unit 13. Methods in Biology

Under normal conditions, about what minimum range of sequence similarity is desired to obtain hybridization between a cDNA probe and the desired gene in a library?

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#Question id: 4624

#Unit 11. Evolution and Behavior

What was the prevailing notion prior to the time of Lyell and Darwin?