What is the period of rapid cell division in which the embryo does not increase in overall size?
A. Syngamy
B. Meiosis
C. Crest formation
D. Cleavage
E. Neurulation
Answer: D
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Cnidarians capture their prey with the use of
(a) poison claws. (b) nematocysts. (c) oral teeth. (d) pedal disks.
Which sequences of eukaryotic genes code for proteins?
A) exons B) introns C) invariant D) the spliceosome
Early in the twentieth century, many biologists believed that the genetic material of living organisms had to be made of protein–it seemed that only proteins had the complexity to store the vast amount of genetic information that organisms need. How is
a relatively simple molecule such as DNA capable of storing large amounts of genetic information? Another requirement for genetic material is that it will sometimes need to be replicated. How does DNA satisfy this requirement? What will be an ideal response?
What structures, in order, are responsible for hearing, starting with a sound wave?
A. tympanic membrane, incus, stapes, malleus, oval window, cochlea, auditory canal B. cochlea, tympanic membrane, auditory canal, malleus, incus, stapes, oval window C. tympanic membrane, malleus, incus, stapes, auditory canal, cochlea, oval window D. auditory canal, oval window, stapes, incus, malleus, tympanic membrane, cochlea E. auditory canal, tympanic membrane, malleus, incus, stapes, oval window, cochlea