An invertebrate, such as an insect, has innate immunity that can be nonspecific about which pathogens are prevented from harming its metabolism. Which of the following is most likely to function this way in the insectʹs intestine?

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#Question id: 12369

#SCPH12 I Genetics

Phosphoric acid attachment occur to ribose or deoxyribose at

A. C3 during phosphodiester bond formation

B. C5 during nucleotide formation

C. C2 during phosphodiester bond formation

D. C1 during nucleotide formation

Which of the combinations contains all incorrect statements?

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#Question id: 9285

#SCPH05 I Biotechnology

Non-O2-evolving (anoxygenic) organisms, contain only a single photosystem such as

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#Question id: 3673

#SCPH28 | Zoology

Which is a characteristic of E. coli DNA polymerases?

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#Question id: 6966

#SCPH28 | Zoology

During gastrulation in the frog, the very first cells to move into the interior of the embryo through the blastopore come from the surface layer of cells in the marginal zone; they will become:

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#Question id: 18615

#SCPH06 I Botany

PCR efficiency is influenced by several factors, the efficiency declines due to

a) efficiency of amplification declines with an increase in the length of the target sequence.

b) Efficiency of PCR is affected by primer length; it declines if the primers used for PCR arc too long.

c) a temperature higher than the ideal annealing temperature reduces PCR efficiency.

d)  primers used for PCR have complementary regions, dimers will be formed, and PCR efficiency will decline.