A crucial photosynthetic gene of the cyanobacterium that gave rise to the chromatophore is called psaE. This gene is present in the nuclear genome of the cercozoan, but is not in the genome of the chromatophore. This is evidence of _____
A) reciprocal mutations in the chromatophore and nuclear genomes
B) horizontal gene transfer from bacterium to eukaryotes
C) genetic recombination involving a protist and an archaean
D) transduction by a phage that infects both prokaryotes and eukaryotes
B
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Indicate whether the statement is true or false.
There are three giant redwoods in California that a person can actually drive through. Imagine that you look up right when you are in the middle of driving through the tree and continue looking up until you exit out the other side
What order of structures would you see as you were driving through the tree? A. pith, phloem, xylem, vascular cambium, cork B. pith, vascular cambium, phloem, xylem, cork C. pith, xylem, phloem, vascular cambium, cork D. pith, xylem, vascular cambium, phloem, cork E. pith, phloem, vascular cambium, xylem, cork
Why may an algae living in deep ocean water have a different combination of pigments than a tree living above sea level?
What will be an ideal response?
The pituitary gland is regulated most directly by the
a. pineal gland. b. hypothalamus. c. pancreas. d. adrenal gland. e. thyroid gland.