The biological species concept cannot be applied to ________
A) fungi that live on land
B) bacteria that reproduce only asexually
C) complex plants that have flowers
D) animals that use asexual and sexual reproduction
B
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You are swimming in a pool and feel the waves of water moving against your body. Which receptor is used to detect the pressure associated with the waves against your body?
A. photoreceptor B. thermoreceptor C. mechanoreceptor D. pain receptor E. chemoreceptor
By which means of acquiring immunity is likely to produce the longest lasting protection?
A) natural B) artificial C) passive D) active E) Active, artificial, natural, and passive all provide equally long-lasting protection.
For tRNA to function in protein production, it must bind to both a _____ and an _____.
A) gene, amino acid B) gene, anticodon C) codon, amino acid D) codon, anticodon
Choose the true statements about the cichlid fish of Lake Malawi.
_____ Within a few million years, hundreds of cichlid species evolved within this lake. _____ Hundreds of different genes determine the length of the jaw in these fish. _____ Jaw length does not affect body shape and size. _____ Variation in jaw structure among species allowed cichlids to specialize in many niches.