Could Sylvia be a carrier for the Tay-Sachs allele?
a. Yes
b. No
a
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Although lacking a TCA cycle and a respiratory chain, ________ can divide with a generation time of eight to ten minutes when growing in a human host.
A. Staphylococcus aureus B. Streptococcus pyogenes C. Clostridium perfringens D. Helicobacter pylori
Both mitochondria and chloroplasts are thought to have evolved by the process of ____
a. endosymbiosis b. viral reassortment
c. transformation d. decomposition e. nitrogen fixation
What are the two types of beta sheets?
A.) helical and pleated B.) primary and secondary C.) soluble and insoluble D.) parallel and antiparallel
Connor decides to celebrate his 21st birthday by drinking a few beers at a local sports bar. After a while, Connor notices that he is making many more trips to the men's room than the week before when he drank similar amounts of carbonated water. Why is that?
A. Alcohol inhibits reabsorption of sugars, amino acids and other small metabolites, which decreases reabsorption of water. B. Alcohol stimulates secretion of ions into the nephron and water follows by osmosis. C. Alcohol inhibits the secretion of ADH by the posterior pituitary gland, thereby decreasing water reabsorption. D. Alcohol stimulates filtration of the blood plasma by the glomeruli. E. Alcohol stimulates the insertion of aquaporins into the plasma membranes of cells that line the collecting ducts, thereby decreasing water reabsorption.