The hormone that signals that fertilization and implantation have taken place is
A. gonadotropin releasing hormone.
B. human chorionic gonadotropin.
C. pluripotent prolactin.
D. pre-embryonic pellucida factor.
E. progesterone.
Answer: B
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The term "codon" refers to
A. a three-nucleotide sequence of DNA that codes for a protein. B. an amino acid that is coded for by three bases of DNA. C. a three-base sequence of mRNA. D. the part of a rRNA molecule where a new amino acid is added. E. the part of tRNA that is a triplet of bases that forms hydrogen bonds with complementary sequences.
Which of the following best defines negative nitrogen balance?
A) Protein breakdown exceeds protein synthesis. B) It is a condition usually caused by having a diet low in fish and meat. C) A negative nitrogen balance is normal and is a way of maintaining homeostasis. D) It occurs when amino acids are broken down by liver enzymes and carried to the bloodstream.
The normal pH of a monogastric's stomach is 7.0
Indicate whether the statement is true or false
You open a can of carbonated soda and pour it into a glass. The carbon dioxide formed bubbles because the partial pressure of carbon dioxide in the air above the soda ________, a process explained by ________ Law.
A. increased Boyle's B. increased; Charles' C. decreased; Henry's D. decreased; Dalton's