The sequence of changes in the species that make up a community is called ________
A) ecological succession
B) pioneer progression
C) climax community
D) progressive adaptation
A
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Egg white is rich in the antimicrobial lysosome
Indicate whether this statement is TRUE or FALSE.
Bacteriophages can be used as vectors in recombinant DNA experiments because they
A) are small and made of double-stranded DNA. B) are circular and easily imported into bacteria or yeast. C) insert their genetic material into bacteria. D) are resistant to protective restriction systems.
All of the following infections can result from drinking contaminated water EXCEPT
A) Cyclospora infection. B) giardiasis. C) trichinellosis. D) cholera. E) cryptosporidiosis.
In the sequence of events during translation, what is the next step after an mRNA binds to the ribosome's small subunit?
A) An amino acid from a tRNA in the P site attaches to an amino acid on the tRNA in the A site. B) A tRNA binds to the start codon, and the large ribosomal subunit joins the ribosome. C) A tRNA is released from the E site. D) A tRNA enters the A site of the ribosome. E) The ribosome shifts down the mRNA by one codon.