The binding of a plant hormone to its receptor typically induces ____
a. an increase in membrane permeability
b. an enzyme-substrate cascade
c. an inhibition of protein synthesis
d. a change in gene expression
e. increased DNA replication activity
ANSWER: d
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Which one of the following codons is capable of terminating translation?
A. UAG B. UAA C. UGA D. UAG and UAA E. All of these choices are correct.
Most homeotic genes encode _____; therefore, the protein products of these master genes are found in the _____
a. stop codons; ribosomes b. transcription factors; nucleus c. transcription factors; extracellular matrix d. splicing proteins; endoplasmic reticulum e. energy releasing proteins; mitochondria
Only the leading strand of a DNA molecule serves as a template during replication
Indicate whether the statement is true or false
Undifferentiated cells that can divide and specialize to form a variety of different cells are called:a
differential cells. b. mother cells. c. determinate cells. d. stem cells. e. morphogens