Antigens displayed on the surface of antigen-presenting cells and viral-infected cells are bound to specific classes of ____________________ molecules
Fill in the blank(s) with correct word
MHC
major histocompatibility complex
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Spoilage of bread, which appears dark green-blue to black in color, is MOST likely caused by the fungus
A) Aspergillus niger. B) Batrachochytrium dendrobatidis C) Glomus spp. D) Rhizopus stolonifer.
14. One of the most critical pieces of evidence to the discovery of DNA structure was
A. its composition of four different nucleotides. B. its mode of replication. C. an X-ray diffraction pattern suggesting a double helix shape. D. the backbone containing sugar-phosphate linkages. E. the covalent bonding between different nucleotides.
These are the only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart.
A. Mammals B. Amphibians C. Birds D. Fishes E. Reptiles
If a spontaneous mutation introduced a new allele into a population's gene pool at a chromosomal locus that had previously been static, which of the following would experience the largest change in value as a result?
(A) Average number of gene loci per chromosome (B) Average frequency of heterozygosity in the gene pool (C) Nucleotide base-pairing variability at the site of the wobble effect in codon-anticodon recognition (D) Geographic variability