Asked by jayson Angulo on May 09, 2024
Verified
_____ activates transcription of the gene for the small subunit of ______, an enzyme involved in photosynthesis
A) Phytochrome; chlorophyll
B) Chlorophyll; rubisco
C) Phytochrome; rubisco
D) Rubisco; phytochrome
E) Cytochrome; rubisco
Rubisco
An enzyme that catalyzes the fixation of atmospheric carbon dioxide during photosynthesis in plants.
Transcription
The process by which the genetic information in a strand of DNA is copied into a new molecule of messenger RNA (mRNA), which then leads to protein synthesis.
- Illustrate the function and relevance of phytochrome in how plants adjust to light environments.
Verified Answer
SH
SaiAnni HyattMay 13, 2024
Final Answer :
C
Explanation :
Phytochrome is a photoreceptor in plants that, upon activation by light, can trigger various developmental processes, including the transcription of genes involved in photosynthesis. Rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase) is a crucial enzyme in the photosynthetic process, catalyzing the first major step of carbon fixation. Therefore, phytochrome activates the transcription of the gene for the small subunit of rubisco.
Learning Objectives
- Illustrate the function and relevance of phytochrome in how plants adjust to light environments.