When a light receptor acts to change,for example,the direction in which a stem is bending,what is it changing at the molecular level?
A) Calcium concentrations
B) DNA copying
C) Hormone synthesis
D) Gene expression
E) None of the above

Question

Quizplus · Accepted Answer

Light receptors can trigger changes in gene expression by activating or deactivating certain genes. This can result in changes at the molecular level, such as the synthesis or breakdown of specific proteins or other molecules that affect the growth and direction of the stem. Calcium concentrations, DNA copying, and hormone synthesis could potentially be affected by changes in gene expression, but they are not directly influenced by light receptors.

When a Light Receptor Acts to Change,for Example,the Direction in Which