Which of the following is an example of mechanical digestion?
A) the breakdown of proteins into amino acids
B) peristalsis
C) the digestion of fats by lipases
D) chewing
D
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In 2D chromatography analysis, each of the spots on the chromatography paper represent different proteins. In order to
correctly identify the proteins and interpret the data, which experimental control must be included?
a. using cellular carbohydrate extract that was not labeled with radioactivity to determine the effect of radioactive labeling on the study b. using purified proteins of interest in individual trials to identify each protein's profile on the chromatography paper c. using water in place of the cellular carbohydrate extract to compare the profile of the proteins to a completely pure sample d. using water in place of the solvent to determine the effect of the solvent on the movement of the proteins on the chromatography paper e. removing excess proteins from the cellular carbohydrate extract before chromatography
Secondary endosymbiosis occurs when a ____ eukaryote engulfs a ____
a. photosynthetic; photosynthetic prokaryote b. photosynthetic; non-photosynthetic prokaryote c. photosynthetic; non-photosynthetic eukaryote d. non-photosynthetic; photosynthetic prokaryote e. non-photosynthetic; photosynthetic eukaryote
In some plants, the direction of growth changes in response to contact with an object. This is called
__________. Fill in the blank(s) with the appropriate word(s).
Women taking birth control pills are more likely to have ________
A) babies B) decreased blood pressure C) increased STDs D) fewer abnormal blood clots