Trypsin and chymotrypsin are secreted by the pancreas. Indicate whether the statement is true or false
True
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Phanerochaete chrysosporium:
A. is a wood-decay fungus that is used to bleach paper and decompose dioxin B. is a lichen that serves as food for reindeer C. is the cause of lung disease D. is an hallucinogenic mushroom E. is a rust that causes oak trees to shed their leaves prematurely
Which of the following is NOT a characteristic
of mitochondria?
a. they are the sites of anaerobic respiration b. they have a double membrane c. they make ATP d. they have their own ribosomes e. all of these are characteristics of mitochondria
When a cell undergoes mitosis,
a. the daughter cells have identical genes. b. the daughter cell has genes identical to those of the mother cell that produced it. c. the amount of cytoplasm in the mother cell and in each of the daughter cells is equal. d. there is an exact duplication and division of all of the organelles between daughter cells. e. the daughter cells have identical genes, and the daughter cell has genes identical to those of the mother cell that produced it.
Chapman's experiment tested female Drosophila melanogaster longevity after mating with one of the following males:
• Treatment 1: Males produced no sperm or accessory gland proteins. These males behaved normally and mated with females. • Treatment 2: Males produced no sperm or accessory gland proteins. These males behaved normally, except that they had their genitalia experimentally altered so that they could not mate with females. • Treatment 3: Males produced seminal fluid and accessory gland proteins, but not sperm. These males behaved normally and mated with females. • Treatment 4: Males produced seminal fluid and accessory gland proteins, but not sperm. These males behaved normally, except that they had their genitalia ex-perimentally altered so that they could not mate with females. It turned out that only seminal fluid with accessory gland proteins (treatment 3) had an effect. What other potential factors did the four treatments control for? a. the effect of the physical act of mating b. the effect of sperm c. factors associated with seminal fluid that are not transmitted via mating d. A and B e. A, B, and C