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Trypsinogen Conversion

Trypsin is a proteolytic enzyme secreted by the pancreas in an inactive form (trypsinogen). Trypsinogen can be converted to trypsin by the action of:

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Characteristics of Histones

Histones are a kind of protein that is known to play a very important role in packaging DNA into chromatin. What of the following characteristics about histones is true?

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Mesoderm Germ Layer

In the developing embryo, which of the following would be formed from the mesoderm germ layer?

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Alignment of Chromosomes

Which of the following are responsible for the alignment of the chromosomes along the metaphase plate (equatorial plate) during mitosis?

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Environmental Influence on Survival


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The fundamental mechanism of evolution whereby an organism changes on its own as a result of environmental influence is called __________________.

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Amoeboid Organisms

The group of organisms that are amoeboid and exhibit a slug stage are:

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Cell Functions

Glycosylation, sulfation and phosphorylation (of proteins) represent functions of which cell organelle?

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Exchange Genetic Information

During what stage of meiosis do homologous chromosomes exchange genetic information?

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Forest Fire

An entire forest is leveled after a forest fire. The process by which organisms will repopulate an area is called:

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Polynucleotide Chains

DNA polymerases catalyze the production of polynucleotide chains. Which of the following statements holds true:

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