Answer the following question given this paragraph: Surface waves travel along the ground outward from an earthquake's epicenter. Surface waves are the slowest of all seismic waves. They travel at 2.5 km (1.5 miles) per second. There are two types of surface waves. Love waves move side-to-side, much like a snake. Rayleigh waves produce a rolling motion as they move up and backwards ( Figure above ). Surface waves cause objects to fall and rise, while they are also swaying back and forth. These motions cause damage to rigid structures during an earthquake. 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)
Answer the following question given this paragraph: Structure of the trp operon. The trp operon is composed of 5 structural genes, 1 regulatory gene and other regulatory sequences, including the promoter, operator and leader sequence. Within the leader sequence is the attenuator region. In the presence of tryptophan, the structural genes are not transcribed. 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: Answer the following question given this paragraph: system of glands that secrete chemical messenger molecules called hormones into the blood. Q: A system of glands secretes what chemical messenger molecules into the blood? Choices: - metabolytes - enzymes - acids - hormones A:
Ans: hormones
(Q).
Answer the following question given this paragraph: The winds of a tornado can reach very high speeds. The faster the winds blow, the greater the damage they cause. Wind speed and damage are used to classify tornadoes. Table below shows how. Q: What is used to classify tornadoes? Choices: - seismograph - damage, snowfall - humidity, rain - wind speed, damage A:
(A).
wind speed, damage
Ques:Answer the following question given this paragraph: After hatching, most arthropods go through one or more larval stages before reaching adulthood. The larvae may look very different from the adults. They change into the adult form in a process called metamorphosis. During metamorphosis, the arthropod is called a pupa. It may or may not spend this stage inside a special container called a cocoon. A familiar example of arthropod metamorphosis is the transformation of a caterpillar (larva) into a butterfly (adult) (see Figure below ). Distinctive life stages and metamorphosis are highly adaptive. They allow functions to be divided among different life stages. Each life stage can evolve adaptations to suit it for its specific functions without affecting the adaptations of the other stages. Q: What is the process of larva becoming an adult called? Choices: - parthenogenesis - synthesis - evolution - metamorphosis A:

Ans:metamorphosis
Ques: Answer the following question given this paragraph: Constellations are patterns of stars seen from Earth. These stars are usually not near each other. Q: What term refers to patterns of stars seen from earth? Choices: - astronomers - horoscope - astrology - constellations A:
Ans:
constellations