Which of the following leads to shedding of carbon dioxide which is necessary to prevent a drop in pH?

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#Question id: 32313

#Unit 2. Cellular Organization

Why does actin subunit addition outpace nucleotide hydrolysis at the plus end but not at the minus end?

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#Question id: 4134

#Unit 3. Fundamental Processes

The enzyme that attaches an amino acid to a tRNA (aminoacyl-tRNA synthetase):

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#Question id: 31081

#Unit 4. Cell Communication and Cell Signaling

Which of the following enzyme converts PIP into PIP2?

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#Question id: 5134

#Unit 5. Developmental Biology

Match the following cleavage patterns with the species in which they occur.

        Species                                           Cleavage Pattern

      A. Flatworm                                       i. Meroblastic discoidal

      B. Frog                                               ii. Meroblastic superficial

      C. Birds                                              iii. Holoblastic displaced radial

      D. Insect                                              iv. Holoblastic spiral

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#Question id: 24533

#Unit 11. Evolution and Behavior

The fitness (W)  value  of the genotype A1A1=1.0,  A1A2=0.5 and A2A2=0.2 , What is the value of the selection coefficient of given genotype;