Q: What type of waves are the slowest of all seismic waves? Choices: - core waves - thick waves - central waves - surface waves A:
surface waves

(Question)
Q: What happens to structural genes in the presence of tryptophan? Choices: - they are not oxidised - they are transcribed - they are exterminated - they are not transcribed A:
(Answer)
they are not transcribed

Ques: Q: A system of glands secretes what chemical messenger molecules into the blood? Choices: - metabolytes - enzymes - acids - hormones A:
Ans: hormones

(Q).
Q: What is used to classify tornadoes? Choices: - seismograph - damage, snowfall - humidity, rain - wind speed, damage A:
(A).
wind speed, damage

Ques:Q: What is the process of larva becoming an adult called? Choices: - parthenogenesis - synthesis - evolution - metamorphosis A:

Ans:metamorphosis

Ques: Q: What term refers to patterns of stars seen from earth? Choices: - astronomers - horoscope - astrology - constellations A:
Ans:
constellations