Acellular vaccines and subunit vaccines
A. are always genetically engineered.
B. confer passive immunity.
C. contain select antigenic components of a pathogen rather than whole cells or viruses.
D. contain modified bacterial exotoxin molecules.
E. utilize DNA strands that will produce the antigen.
Answer: C
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Suppose you saw the seedling pictured at the right while walking in the woods.
a. To which gymnosperm phylum does the plant belong? b. Identify structures a) seed coat and b) cotyledon.
A term synonymous with antibody is
A. antigen. B. epitope. C. determinant. D. immunoglobulin
Imagine that fur length in a chinchilla species is a polygenic trait controlled by at least three genes. For each of these genes, long fur (PL, QL, or RL) has incomplete dominance over light (PS, QS, RS). A chinchilla homozygous for long fur is mated with a chinchilla that is homozygous for short fur. What will be true of their offspring?
A. 1/4 will be homozygous for long fur, 1/4 will be homozygous for short fur, and 1/2 will be heterozygous. B. 1/2 of their offspring will have long fur, 1/2 of their offspring will have short fur. C. 1/2 of their offspring will be homozygous for long fur, 1/2 of their offspring will be homozygous for short fur. D. All of their offspring will have intermediate-length fur. E. All of their offspring will have long fur.
Amphistegina gibbosa is a species of protist with filose pseudopodia found near coral reefs. What cannot be true of A. gibbosa?
A. They are enclosed within a shell composed of calcium carbonate. B. They have sacs under the cell membrane. C. They can be useful in studying global warming. D. They are heterotrophic. E. They are closely related to radiolarians.