The signal from the environment that triggers a stereotyped behavior is a
A. reinforcing stimulus.
B. key stimulus (sign stimulus).
C. releasing mechanism.
D. fixed action pattern.
E. conditioned reflex.
Answer: B
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The observations you make and experimental data you collect in your biology laboratory class are
examples of:
a. statistical analysis. b. hypothesis building. c. biological dogma. d. model systems. e. biological research.
Charles Yanofsky helped decipher the genetic code working with the ________ biosynthesis genes in ________.
A) leucine; Salmonella enteritidis B) phenylalanine; Klebsiella pneumoniae C) tryptophan; Escherichia coli D) glycine; Serratia marcescens
Which of the following is NOT found in every
nucleotide? a. ribose b. a phosphate group c. a single-ring base d. a double-ring base e. nitrogen
An unprotected area of naturally occurring plant and animal assemblages that is surrounded by unsuitable territory due
to development or habitat destruction is referred to by biologists as: a. an island. b. ex situ conservation. c. a reserve. d. a park. e. a refuge.