A large percentage of energy passes on from one trophic level to the next
Indicate whether the statement is true or false.
ANS: F, small
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_____ are RNA molecules that can catalyze reactions like protein enzymes do
1.Initiation factors 2.Ribozymes 3.Elongation factors 4.Poly A polymerases 5.Release factors
Part of a chromosome lacking a centromere breaks away and does not reattach to another chromosome
a. Crossing-over b. Inversion c. Translocation d. Nondisjunction e. Deletion
Fisher's sex ratio model was put to test in a species of blue moon butterflies on the Samoan islands of Upolu and Savaii, where which of the following conditions existed?
a. The male:female sex ratio was the expected 1:1. b. 99% of the butterflies were female and only 1% were male. c. Only the males were infected with the Wolbachia bacterium. d. A and C.
The circulatory system in plants is composed of
1) Transportation and transpiration 2) Heart and blood 3) Xylem and phloem 4) None of the above