Which of these hormones stimulates the production of milk?
A) Oxytocin B) Prolactin C) Estrogen D) Progesterone E) Colostrum
B
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Rubbing a substance on uncoated paper should reveal if it contains
(a) lipid. (b) carbohydrate. (c) protein. (d) sugar.
You transform bacteria with a plasmid carrying the ampicillin-resistance gene ampR. How would you determine which bacteria took up the plasmid?
A. Bacteria containing the plasmid would be able to grow in the absence of ampicillin. B. Bacteria containing the plasmid would be able to produce ampicillin. C. Bacteria containing the plasmid would turn blue. D. Bacteria containing the plasmid would be able to grow in the presence of ampicillin. E. Ampicillin-resistance is necessary for the plasmid DNA to get into the bacteria.
Kara worked in the produce department of a grocery store in the afternoons. She wondered how much the ripeness of bananas affected the sale of the fruit. She collected data for 10 days on the total number of pounds of bananas sold of green, yellow, and brown-black bananas. What is the independent variable in her experiment?
A. Type of people who buy different bananas B. Amount of bananas sold C. Ripeness of bananas D. The number of days the data was collected
Tumor suppressor proteins?
A) produce growth factor signal cascades. B) remove growth factors from DNA. C) inactivate components of growth factor signal cascades. D) are produced by growth factors.