What prevents knot formation in replicating DNA?
a. protosomes
b. topoisomerases
c. scaffolding proteins
d. chromatin
e. histones
B
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A high-affinity antibody binds nonspecifically and loosely to antigen
Indicate whether the statement is true or false.
The deactivation of NK cells due to binding of NK receptors to MHC I proteins is called
A) promoting. B) phagocytosis. C) licensing. D) neutralization.
A molecule of water in the middle of a chunk of ice will usually have ____ hydrogen bonds with other water
molecules.
a. 2 b. 3 c. 3.4 d. 4 e. 6
Put the following events of elongation in prokaryotic translation in chronological order
1. Binding of mRNA with small ribosomal subunit 2. Recognition of initiation codon 3. Complementary base pairing between initiator codon and anticodon of initiator tRNA 4. Base pairing of the mRNA codon following the initiator codon with its complementary tRNA 5. Attachment of the large subunit A) 1, 2, 3, 4, 5 B) 2, 1, 4, 3, 5 C) 5, 4, 3, 2, 1 D) 1, 2, 3, 5, 4