Some bacteria exhibit a primitive form of behavior in that they can sense the properties of their environments and use that ability to make adaptive responses. Which of the following are NOT capabilities of any known bacterium?
A. orientation with respect to the Earth's magnetic field
B. move to other bacteria and aggregate with them in response to chemical signals
C. respond to light with the aid of flotation devices
D. respond to other individual bacteria and transmit DNA via conjugation
E. none of the other options presented
E. none of the other options presented
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In two-dimensional nano-liquid chromatography, a complex mixture of peptides is separated first by charge and then by solubility.
Answer the following statement true (T) or false (F)
If two species of lizards do not mate because their mating rituals differ greatly, this is known as
a. behavioral isolation. b. ecological isolation. c. gametic isolation. d. mechanical isolation. e. temporal isolation.
Which structure is a characteristic found only in angiosperms?
A. flower B. leaf C. megaphyll D. seed E. vascular tissue
What stage of development involves cell division without cell growth?
A. gastrulation B. organogenesis C. fertilization D. cleavage E. neurulation