Which hormone, secreted by the chorion during implantation, functions to maintain the corpus luteum?
A) progesterone
B) human chorionic gonadotropin
C) relaxin
D) placental prolactin
E) estrogen
Ans: B) human chorionic gonadotropin
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Studies have shown that in the flowering plant Arabidopsis the development of parts of a flower is governed by ____
a. differential uptake of hormone signals from the leaves b. the oxygen gradient from outside to inside of the closed flower c. differentiation of cell types as they are formed from the apical meristem d. the timing of cell division e. the expression patterns of several floral organ homeotic genes
A technique similar to gene chips that is relatively new and can be used in disease diagnosis is called ________
A) reverse transcriptase PCR B) genomics C) chorionic villus sampling D) SDS-PAGE E) protein microarrays
When a new food product is being analyzed for nutritional content, the food will be subjected to hydrolysis in the lab. The end products are analyzed to determine, for example, fat and sugar content
Suppose a lab is analyzing a new product that claims to be fat free. After the hydrolysis of the product is complete, the examiners find glucose, glycerol, fatty acids, and amino acids. Is this product free of fat? Justify your answer.
Nitrogen fixation is the process by which gaseous nitrogen is converted to nitrate
____________________ Indicate whether the statement is true or false.