Which statement concerning phytochrome-induced responses is false?
a. All responses are very rapid and short-term.
b. Red light causes potassium channels to open.
c. The absorption of light by one part of the phytochrome molecule triggers a conformational change in another
part.
d. Phytochrome activates transcription of the gene for a subunit of rubisco.
e. Far-red light causes potassium channels to close.
a
You might also like to view...
In which region of the plant are you most likely to find cells dividing by mitosis?
A) Meristem region B) Growth rings C) Heartwood D) Sapwood
Of these steps, which one occurs earliest in the process of producing recombinant DNA?
A) Human DNA fragments are mixed with the cut plasmids. B) The same restriction enzyme is used to isolate the gene of interest and to cut the plasmid DNA. C) The recombinant plasmids are mixed with bacteria. D) Bacteria carrying recombinant plasmids are cloned.
Flagellated cells can
A) attach to surfaces more effectively because of the flagella. B) move the cell through fluid. C) move internal organelles more efficiently than nonflagellated cells. D) divide more quickly than nonflagellated cells.
Some diseases are linked to the under or over expression of specific genes. A particular cancer is characterized by the overexpression of a gene. Do you predict the histones associated with this gene to be acetylated? Describe why this would lead to
increased gene expression and how histone acetyl transfer (HAT) and histone deacetylase (HDAC) could be involved. What will be an ideal response?