When There Is No Lactose in a Cell,production of Lac

question 90

Multiple Choice

When there is no lactose in a cell,production of lac operon

• A) increases.
• B) decreases.
• C) turns off completely.
• D) production of lac operon does not depend on lactose concentration.

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Definitions:

Pressure-Flow Model

A hypothesis describing how nutrients, especially sugars, are transported in plants from sources to sinks via the phloem.

Translocation

A chromosomal abnormality where a segment of one chromosome is transferred to another chromosome.

Pressure-Flow Model

A hypothesis that explains how sugars are transported in plants, suggesting that pressure differences move solutes through phloem sieve tubes.

Translocation

In plants, the movement of substances like sugars and nutrients from leaves to other parts of the plant through the phloem.