The Concept of the Operon Was Proposed Based on the Ability

question 12

Multiple Choice

The concept of the operon was proposed based on the ability of E. coli to metabolize the disaccharide ________ only when present in large excess over glucose.

• A)sucrose
• B)cellobiose
• C)galactose
• D)lactose
• E)maltose

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Definitions:

Living Standards

refer to the quality and quantity of goods and services available to people, and the way these goods and services are distributed within a population.

Birthrates

The number of live births per thousand of the population in a specific time period.

Demographic Transition

The massive decline in birth rates that occurs once a developing country achieves higher standards of living because the perceived marginal cost of additional children begins to exceed the perceived marginal benefit.

Death Rates

The number of deaths in a particular population, scaled to the size of that population, per unit of time, typically expressed per 1000 individuals per year.