The source of the water that formed the earth's oceans was water vapor escaping from the interior of the planet
Indicate whether the statement is true or false
T
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______ is the observable response of organisms to external or internal stimuli.
A. Ecology B. Behavioral ecology C. Behavior D. Pheromonal mediation E. Allomonal mediation
If rice could be bioengineered to contain more carotene, which is a precursor to vitamin A, what worldwide health problem could be improved?
a. AIDS b. malaria c. rickets d. goiter e. blindness
Vegetative propagation means that
a. part of a leaf, a stem, or a root, when torn away from the parent plant and planted under proper conditions, can develop into a new plant. b. a plant cannot reproduce by forming flowers, fruits, and seeds. c. the leafy part of the gametophyte can grow into a new plant if planted. d. flowers and fruits from one plant can be grafted onto another closely related plant to produce hybrids. e. all of these descriptions fit.
The splicing regulatory protein (SR) identifies exons to be included in mRNA. How might SR proteins regulate alternative splicing?
A) There are alternative binding regions for these proteins within each exon. B) There are alternative SR proteins in different tissues at different stages of development. C) The SR proteins lose the ability to bind to exon splice suppressors. D) The SR proteins recruit the splicing small RNAs (U1, U2,…) or unusual ones. E) The spliceosome complex can bind only to regions with bound SR proteins.