Crustaceans:
A. have radial body symmetry.
B. include animals such as the nautilus and
squid.
C. include animals such as spiders and
scorpions.
D. have a hard external skeleton composed
of a polysaccharide commonly known as
chitin.
D
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The newly arriving tRNA binds in the region of the ribosome known as the ________ site.
Fill in the blank(s) with the appropriate word(s).
Which of the following is not a type of connective tissue?
a. bone b. muscle c. blood d. cartilage
If your pulse is 70 beats per minute, how fast is your heart beating?
A. 140 beats per minute B. 35 beats per minute C. 70 beats per minute D. 80 beats per minute E. 120 beats per minute
The organelle responsible for the biosynthesis of proteins that are destined for secretion by the cell is the
A. mitochondria. B. endoplasmic reticulum. C. vesicle. D. lysosome. E. Golgi apparatus.