Antibodies consist of four polypeptides, ________ heavy chains, and ________ light chains
A) one / three
B) two / two
C) three / one
D) four / four
Answer: B
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Methanogens may contribute to the greenhouse effect and global warming due to methane production.
Answer the following statement true (T) or false (F)
Erica needs to increasingly consume more cocaine to get the same effect. She is exhibiting
A) tolerance. B) dependence. C) paranoia. D) suicidal ideation.
During transcription, the synthesis of the mRNA strand proceeds in which direction?
A) 5' to 3' only B) 3' to 5' only C) Both 5' to 3' and 3' to 5' D) Either 5' to 3' or 3' to 5' E) First 5' to 3', and then 3' to 5'
Consider this statement: Pea plants carry two copies of the gene for flower color but their gametes only have one copy. This statement is an application of Mendel's __________
a) Law of Independent Assortment. b) idea that genes come in different versions. c) concept of dominant and recessive alleles. d) Law of Segregation.