True or False: Intrasexual selection includes physical competition among males, whereas intersexual selection involves advertisement displays
A. true
B. false
A
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A vesicle can be best compared to a:
A. micelle. B. lipid raft. C. liposome. D. bilayer.
Which of the following is the primary assumption made by researchers when designing experiments to
model how life may have arisen?
a. The chemical reactions of living things are only possible in living systems. b. Living organisms are composed of elements commonly found in the universe and on Earth. c. Conditions on Earth have not changed over time. d. Life arose on Earth from non-living matter. e. The development of living cells from nonliving matter was very rapid.
If water were flowing from area A to area B via osmosis, through a semipermeable membrane, we might expect area B to be ________ in solute concentration compared to A
Fill in the blank(s) with correct word
Tetrodotoxin is a potent poison, produced by some newts, pufferfish, and blue-ringed octopus that affects sodium transport involved with the voltage gates in neurons. A friend swimming in the Caribbean is pricked by a pufferfish and gets very sick. The most likely action the poison takes is
A. Mimicking an antiporter and allowing sodium to rush out. B. Blocking a symporter and keeping sodium from rushing in. C. Blocking an antiporter so sodium cannot rush in. D. Mimicking a symporter and allowing sodium to rush out and potassium to rush in.