In the conversion of electrical energy to light
energy in a light bulb, how much is lost as heat
energy?
a. 5 percent
b. 15 percent
c. 55 percent
d. 75 percent
e. 95 percent
E
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In a transcription complex, how many base pairs of RNA-DNA hybrid are found?
A. 2 B. 8 C. 25 D. 35 E. 100
Which of the following is part of the lateral
meristem? a. cork cambium b. procambium c. protoderm d. ground meristem e. all of these
Which of the following is not a prezygotic isolating mechanism for two species found in the same geographical location?
A. The two species occupy different habitats. B. The two species are active during different parts of the day. C. The two species mate during different times of the year. D. The two species have incompatible genitalia. E. The two species can mate, but the offspring are sterile.
Which structure is part of the placenta and completely surrounds the embryo?
A) chorion B) amnion C) yolk sac D) allantois