How long do human red blood cells circulate in the blood before they wear out and have to be replaced?
A) 1 to 2 weeks
B) 1 month
C) 3 to 4 months
D) 10 to 12 months
Answer: C
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Sound is "heard" when sound waves cause structures inside your ears to physically vibrate. A signal is then sent to your brain where it is interpreted as sound. What type of receptor in the ear is responsible for the sense of hearing?
A) Chemoreceptors B) Electromagnetic receptors C) Mechanoreceptors D) Thermoreceptors
Lampreys and salmon share a common behavior of being catadromous, meaning they migrate to freshwater to spawn
Indicate whether the statement is true or false
What is the maximum Lod score for this mating?
A) 0.22 B) 1.1 C) 6.3 D) 11
Which statement best describes the now-discredited theories of Lamarck?
A) All life was created in the form we see today. B) Modern life forms are the descendants of past individuals who were the most fit. C) Organisms acquire traits during their lifetime and pass those traits on to their offspring. D) Earth is extremely old and has undergone many changes.