E.coli Chromosomes

question 31

Multiple Choice

E.coli chromosomes:

• A) Replicate in a unidirectional pattern from a single, unique origin, called oriC.
• B) Adopt a u-shaped conformation during replication.
• C) Consist of two Y-shaped replication forks which move in same direction
• D) Have AT-rich regions at the origin of replication to maintain a tight conformation between strands, this facilitates the formation of the replication bubble.
• E) None of these

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Definitions:

Research Hypothesis

A specific, testable prediction about the expected outcome of a scientific study.

Interaction

The effect of two or more variables is not simply additive, but depends on the levels of the other variables.

Factorial ANOVA

A statistical test used to examine the effects of two or more independent variables on a dependent variable, and their interactions, within an experimental design.

Probability Level

The threshold of significance in hypothesis testing, indicating the likelihood that a result is not due to chance.