The secretion of which hormones qualifies the pancreas as an endocrine gland?
A. digestive juices and glucagon
B. mineralocorticoids and insulin
C. estradiol and digestive juices
D. insulin and glucagon
E. insulin and digestive juices
Answer: D
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Inserting a kanamycin resistance cassette into a catabolic operon to confirm the gene is essential in degradation of a particular compound would involve all of the following EXCEPT
A) a reporter gene. B) ligation. C) recombination. D) transformation.
The Calvin cycle makes direct use of ________ to make ________
A) light energy and CO2... sugar B) CO2, ATP, and NADPH... sugar and O2 C) light energy, CO2, and water... sugar and O2 D) CO2, ATP, and NADPH... sugar
The frequency of heterozygosity for the sickle cell anemia allele is unusually high, presumably because this reduces the frequency of malaria. Such a relationship is related to which of the following?
A) Mendel?s law of independent assortment B) Mendel?s law of segregation C) Darwin?s explanation of natural selection D) Darwin?s observations of competition E) The malarial parasite changing the allele
A dysfunctional cell lacks a signal peptidase and is unable to cleave the ER signal sequence from proteins translated in the ER. What will be the effect on the cell's proteins?
A. The cell will have no integral membrane proteins. B. All cellular proteins will have an ER signal sequence. C. There will be a common signal sequence at the C-terminus of all integral membrane proteins in the nuclear envelope. D. All cellular proteins will become membrane proteins. E. There will be a common signal sequence at the N-terminus of all integral membrane proteins in the plasma membrane.