When researchers exposed Volvox carteri to oxidative stress, what was the result?
a. induction of sex-related genes
b. induction of genes for colour
c. mating
d. death
Ans: a. induction of sex-related genes
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In a single sodium-potassium pump cycle, ATP is used with the result that
A. 3 sodium ions leave and 2 potassium ions enter. B. 2 sodium ion enters and 1 potassium ion leaves. C. 2 sodium ion leaves and 1 potassium ion enters. D. 3 sodium ions enter and 2 potassium ions leave. E. sodium and potassium ions enter and water leaves.
Twin, adoption, and family studies show that obesity has a heritability that averages close to ____
a. 0.1 b. 0.3 c. 0.5 d. 0.7 e. 0.9
Many zooplankton migrate daily from the DSL to the epipelagic zone
Indicate whether the statement is true or false
A rise in sodium levels and extracellular volume
leads to a rise in blood pressure. As a result, a. renin levels rise, but aldosterone levels fall. b. renin levels fall, but angiotensin levels rise. c. renin and aldosterone levels all rise. d. renin and aldosterone levels all drop. e. none of these occur.