An ecologist spent a year studying the population dynamics of a species of duck on a lake. At the beginning of the year, there were 86 adults
Of these, 16 adults left the lake, 12 adults arrived on the lake from elsewhere, 76 chicks hatched from eggs, 24 chicks survived to become adults, and 8 adults died. How many individuals emigrated? A) 8
B) 12
C) 16
D) 24
C
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Which one of the following is not part of the endomembrane system?
A. nuclear envelope B. endoplasmic reticulum C. messenger RNA D. Golgi apparatus
You see a red, tubular flower with no distinct scent. It is likely pollinated by a _______
A. bird B. bat C. bee D. rodent E. beetle
Select the correct sequence of animal developmental events
a. fertilization >>> cleavage >>> gastrulation >>> morula b. fertilization >>> cleavage >>> morula >>> gastrulation c. cleavage >>> morula >>> gastrulation >>> fertilization d. morula >>> fertilization >>> gastrulation >>> cleavage e. fertilization >>> morula >>> gastrulation >>> cleavage
Which of these processes brings into the cell large macromolecules and particles by the formation of a vesicle in the outer membrane?
A) pinocytosis B) exocytosis C) endocytosis D) facilitated transport