[Campbell Biology P.914] Which statement accurately differentiates between heat-shock protei... | Practice Question
Which statement accurately differentiates between heat-shock proteins and antifreeze proteins based on the provided text?
A: Heat-shock proteins protect against protein denaturation in high temperatures, while antifreeze proteins prevent ice crystal growth in subfreezing temperatures.
B: Heat-shock proteins are found only in plants, while antifreeze proteins are exclusive to Arctic fish.
C: Both types of proteins primarily function by altering membrane fluidity to cope with temperature extremes.
D: Heat-shock proteins are produced in response to fungal pathogens, whereas antifreeze proteins respond to short days.
Explanation
The text explains that 'plant cells begin synthesizing heat-shock proteins, which help protect other proteins from heat stress' and that 'antifreeze proteins permit survival at temperatures below 0°C. They bind to small ice crystals and inhibit their growth or, in the case of plants, prevent the crystallization of ice.'