Figure 15.3

question 15

Multiple Choice

Figure 15.3
Above is a metabolic pathway for the synthesis of an amino acid (E) , without which an organism could not live. Enzymes are represented by numbers, and substrates by letters. Use this figure for the next two questions.
-According to the figure above,if enzyme 3 was nonfunctional in an organism,which of the following outcomes would you predict?

• A)The cell would die because of a lack of the essential amino acid.
• B)Another enzyme would be able to catalyze the reaction and the pathway would proceed.
• C)Substrate C would accumulate,and there would be no substrate D formed.
• D)Lack of enzyme 3 would result in a cessation (halt)of the entire metabolic pathway.

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Definitions:

F-ratio

A statistical value used in ANOVA tests to determine the ratio of variance between groups to variance within groups.

Null Hypothesis

A statement that asserts there is no significant difference or effect, which researchers aim to test against alternative hypotheses.

Analytical Comparison

The process of examining differences and similarities between entities or datasets to draw meaningful conclusions or insights.

Null Hypothesis

A statement that there is no effect or no difference, and it is the hypothesis that researchers aim to test against the alternative hypothesis.