Practice Questions

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#Question id: 4944

What is true of the amino acids that might have been delivered to Earth within carbonaceous chondrites?

#SCPH06 I Botany

They had the same proportion of L and D isomers as Earth does today.
The proportion of the amino acids was similar to those produced in the Miller-Urey experiment.
There were fewer kinds of amino acids on the chondrites than are found in living organisms today.
They were delivered in the form of polypeptides.

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#Question id: 4343

#SCPH01 Biochemistry

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the repressor gene (lacI), along with its promoter, to a position at some several thousand base pairs away from its normal position, which of the following results would be expected?

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#Question id: 15920

#SCPH05 I Biotechnology

_____________is the advantage of animal tissue culture

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#Question id: 5580

#SCPH01 Biochemistry

The innermost layer of the root cortex is the

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#Question id: 2312

#SCPH28 | Zoology

Membranous sac-like structures that are formed from the Golgi apparatus are called