The principal structural components of cilia and flagella are
a. actin microfilaments.
b. myosin microfilaments.
c. intermediate filaments.
d. microtubules.
e. collagen fibers.
D
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Cancer cells ____
a. maintain telomerase function b. have longer telomeres than normal cells c. eventually die due to shortening chromosomes d. have circular chromosomes e. cannot replicate their DNA
Members of this subphylum are now all extinct, but they were extremely numerous in shallow
Paleozoic seas. Most of them were dorsoventrally flattened and heavily armored, with two deep longitudinal grooves that gave their body a three-lobed appearance.
a. Myriapoda b. Trilobita c. Chelicerata d. Hexapoda e. Crustacea
Energy stored in the bonds between atoms, such as Carbon and Hydrogen, is defined as __________
A. kinetic energy B. heat energy C. chemical energy, a type of potential energy D. chemical energy, a type of kinetic energy E. radioactive energy
Experiments that attempt to simulate conditions on early Earth have produced results that hint at the possible origins of life. What have the experiments produced?
What will be an ideal response?