Which of the following statements about tRNA is FALSE?
A. tRNAs of both eukaryotes and prokaryotes share common features.
B. The two-dimensional structure of tRNAs exhibits a cloverleaf pattern.
C. tRNAs are produced in the nucleus.
D. tRNAs can be spliced by splicesomes.
E. tRNAs possess an anticodon complementary to the codon.
D. tRNAs can be spliced by splicesomes.
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The waterproofing protein in the skin is called
a) dermicidin. b) keratin. c) melanin. d) lysozyme.
A manufacturing company dumps its wastes into a nearby pond. One of the wastes is found to paralyze the contractile vacuoles of certain protists. A biologist looking at individual samples of these organisms taken from the pond would find that they
A) have lost water and shrunk. B) have gained water and burst. C) have died of malnutrition. D) have died because wastes have built up in the cytoplasm.
The transverse processes of vertebrae point ________, while the spinous process points ________.
Fill in the blank(s) with the appropriate word(s).
Which cellular structure is unique to plant cells?
A) Ribosome
B) Chloroplasts
C) Mitochondria
D) Plasma membrane