________ is the organelle associated with the functions of steroid biosynthesis, carbohydrate metabolism, and drug detoxification
Fill in the blank with correct word.
Answer: Smooth endoplasmic reticulum
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Within a large lake, gobies are small fish that are found in regions with shallow water and a
sandy bottom. This shallow, sandy region is the organism’s __________, whereas the lake itself is the __________.
a. microhabitat; macrohabitat b. macrohabitat; microhabitat c. niche; macrohabitat d. microhabitat; ecosystem
In cases like tuberculosis and streptococcal pharyngitis, the infection agent breaks loose from a local infection and is carried to other tissues, resulting in a ______ infection
Fill in the blank(s) with the appropriate word(s).
In mammals, which reaction to cold limits the amount of heat an animal loses to its surroundings?
a. shivering b. pressing hair shafts close to the body c. reducing blood flow to the skin d. going off to lie alone so that others do not take their heat
In a classic experiment from the 1930s, a biologist conducted selective breeding experiments involving maze-running behavior in rats
He repeatedly bred together males and females that made the fewest mistakes, and he also bred together males and females that made the most mistakes. After eight generations, all mice that descended from "maze-smart" parents were better at running the maze than all mice that descended from "maze-dumb" parents. This study indicates that A) rats move through a maze randomly. B) trial-and-error learning in rats appears to have a genetic component. C) maze running is a purely learned behavior. D) nothing can be concluded about maze-running behavior in rats. E) maze running is a purely innate behavior in rats.