Lake ecosystems have many trophic levels
Indicate whether the statement is true or false.
ANS: F, few
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What is a fruit?
A. A mature ovary B. A plant embryo C. A swollen plant zygote D. The protective endosperm
Which assay allows you to identify the exact location of the protein-binding sequence within a promoter?
A) western blotting B) in situ hybridization C) pulse-chase assay D) Southern blotting E) DNA footprint protection assay
When bacteria invade the kidney, the result can be
A) cystitis. B) ectopic. C) prostatitis. D) pyelonephritis. E) bacteriosis.
A researcher hypothesizes that crocodile gender is determined by the incubation temperature of the egg. The hypothesis states that an average nest temperature of 32-33°C results in the birth of male crocodiles while cooler and higher incubation temperatures result in female crocodiles.Researchers find a group of crocodiles in which an expanded incubation temperature gives rise to male crocodiles. This particular group of crocodiles hatch male crocodiles even with incubation temperatures as low as 29°C. What type of scientific approach has led to this observation?
A. hypothesis testing B. discovery-based science