Place the five steps of digestion in most animals with a digestive tube in the proper order
a. absorption ?enzymatic hydrolysis ?mechanical processing ?secretion of enzymes ?elimination
b. absorption ?mechanical processing ?enzymatic hydrolysis ?secretion of enzymes ?elimination
c. mechanical processing ?absorption ?secretion of enzymes ?enzymatic hydrolysis ?elimination
d. mechanical processing ?secretion of enzymes ?enzymatic hydrolysis ?absorption ?elimination
e. mechanical processing ?secretion of enzymes ?absorption ?enzymatic hydrolysis ?elimination
ANSWER: d
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You add a large amount of XFF to cultured alien liver cells. Which of the following would confirm that XFF is the alien equivalent of human epinephrine?
A) increased cell division B) decreased cell division C) glycogen breakdown D) increased glucose uptake E) insensitivity to insulin
The process illustrated in the accompanying figure is called:
a. peristalsis.
b. hydrolysis.
c. emulsification.
d. proteolysis.
e. diffusion.
Alternative RNA splicing
A. can allow the production of similar proteins from different RNAs. B. can allow the production of proteins of different sizes and functions from a single mRNA. C. is a mechanism for increasing the rate of transcription. D. increases the rate of transcription. E. is due to the presence or absence of particular snRNPs.
The ordering of bases in a gene determines the order of:
A) mRNAs on a ribosome. B) genes on a chromosome. C) amino acids in a protein. D) genes in a genome.