One problem with the EIA test is the disposal of radioactive wastes
Indicate whether the statement is true or false.
Answer: FALSE
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As a seed germinates, its shoot points upward toward light, and its roots grow downward into the soil. Turn the plant sideways, and the stem and roots bend according to the new direction of gravity. How do roots and shoots grow in opposite directions as the plant is rotated?
A. The absorption of light by phytochromes only occurs in shoots. B. The roots and shoots respond oppositely to auxin. C. The circadian rhythms of roots and shoots are opposite. D. Statoliths move in the opposite direction of roots and shoots. E. through differences in thigmotropism
Energy flow in an ecosystem is
a. cyclical. b. one-way. c. two-way. d. reversible under different conditions. e. dependent on the organisms in the ecosystem.
All of the following statements about the individuals in a population are TRUE except which one?
A. They belong to the same species. B. They contain identical genes. C. They belong to the same gene pool. D. They live in the same geographic area.
In a certain bacterial gene, transcription fails to initiate properly. What is a possible explanation?
a) DNA has not properly unwound from histones. b) The is a mutation in the inverted repeat sequence so that a hairpin can not form. c) There is a mutation at the Pribnow box at the -10 upstream location. d) There is a mutation at the Pribnow box at the -35 upstream location. e) TATA-binding protein (TBP) has not been added yet.