Kinesin motor proteins use ATP energy to:
A. carry vesicles along a microtubule within a
cell in a minus-to-plus direction.
B. carry vesicles along a microfilament within
a cell in a minus-to-plus direction.
C. carry vesicles along a microtubule within a
cell in a plus-to-minus direction.
D. carry vesicles along a microfilament within
a cell in a plus-to-minus direction.
E. slide along microfilaments to contract
muscle cells.
A
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The difference between a nucleotide and a nucleoside is the presence of which of the following?
A. a phosphate group B. a pentose sugar C. a hydroxyl group D. a nitrogenous base E. an amino group
Parental care is best developed among
A) ants and bees. B) fish. C) salamanders. D) snakes and turtles.
Which statement is false concerning X chromosome inactivation?
A. It is an accident of evolution. B. It is an example of dosage compensation. C. It is a gene control mechanism. D. It is responsible for the normal development of female embryos. E. It does not occur in males.
Which molecular method would be the MOST high-throughput way to identify active taxa within a microbial community?
a. ARISA b. metagenomics c. phylochip analysis d. pyrosequencing of SSU rDNA