The meteors in meteor showers are believed to be the debris left behind in comet orbits
a. True
b. False
Indicate whether the statement is true or false
True
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Evergreens are plants that maintain their leaves in all seasons and include trees such as
The main limitation of a drug that treats disease by altering chromatin remodeling is that
A) the changes would be passed on to daughter cells. B) it would change the number of copies of a gene that people inherit. C) it would change the expression of many other genes. D) the changes would be epigenetic.
Which type of body plan is characteristic of a dog?
a. bilateral symmetry b. radial symmetry c. asymmetry d. indeterminate symmetry
Plants maintain higher levels of phytochrome at their growing tips where phytochrome plays important roles in growth responses to light. Phytochrome levels are also high in areas of the plant that are "greening". What does this suggest about the role of phytochrome in these "greening" zones?
A. Phytochrome is facilitating the transcription and translation of photosynthesis related proteins. B. In these areas, phytochrome is the first step in the electron transport chain of photosynthesis. C. Phytochrome is absorbing green wavelengths of light. D. Phytochrome is facilitating the migration of chlorophyll pigments from other areas of the plant.