In which level of organization would viruses exist?
What will be an ideal response?
sub-cellular
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Which of the following explains the presence of Proteaceae in both Australia and South America?
a. movement of tectonic plates b. effects of embryological development c. continued isolation of organisms d. impact of environmental adaptation
According to Chargaff's rules, ________ always pairs with ________, and ________ always pairs with ________.
a. A; T; G; C b. C; T; G; A c. G; U; A; C d. A; G; T; C e. A; C; G; T
A new plant species formed from the hybridization between a plant with a diploid number of 16 and a plant with a diploid number of 12 would probably have a gamete chromosome number of
A) 12. B) 14. C) 16. D) 22. E) 28.
Most often, the largest gradient in water potential is between
A. roots and soil water. B. root xylem and shoot xylem. C. leaf cells and the intracellular spaces inside the leaves. D. xylem and phloem. E. the relative humidity inside the leaf and the relative humidity outside the plant.