Tooth like scales found on sharks and rays
A) placoid
B) ganoid
C) ctenoid
D) cycloid
Answer: A) placoid
Biology & Microbiology
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In order to add a single amino acid to a growing polypeptide chain, a total of ________ molecules or ATP of GTP are utilized.
A. three B. six C. two D. four
Biology & Microbiology
Deposits of shells from ancient _____ are mined as chalk and limestone
a. dinoflagellates c. radiolarians b. diatoms d. foraminiferans
Biology & Microbiology
Which of the following organisms employs a
contractile ring during cell division?
a. bears b. humans c. roses d. pigs e. more than one of these
Biology & Microbiology
If a pedigree of several generations shows only females affected by a particular trait, it cannot be a(n) ____ trait
a. autosomal recessive b. autosomal dominant c. Y-linked d. X-linked recessive e. X-linked dominant
Biology & Microbiology