Answer the following question given this paragraph: Platelets are cell fragments involved in blood clotting. They stick to tears in blood vessels and to each other, forming a plug at the site of injury. They also release chemicals that are needed for clotting to occur. Q: What is the term for the cell fragments involved in blood clotting, which stick to tears in blood vessels and to each other? Choices: - molecules - droplets - cells - platelets A:
platelets
(Question)
Answer the following question given this paragraph: Acceleration occurs when a force is applied to a moving object. Q: What occurs when force is applied to a moving object? Choices: - stimulation - inertia - transmission - acceleration A:
(Answer)
acceleration
Ques: Answer the following question given this paragraph: The earliest and simplest vertebrates are fish. Fish also have the greatest number of vertebrate classes. Think about some of the fish you are familiar with, such as fish you eat or fish you may have seen in aquariums. Q: What are the earliest and simplest vertebrates? Choices: - whales - birds - bears - fish A:
Ans: fish
(Q).
Answer the following question given this paragraph: Q: What do you call the formation of a water vapor pocket? Choices: - conduction - precipitation - coagulation - cavitation A:
(A).
cavitation
Ques:Answer the following question given this paragraph: Improving crops by selecting for certain genetic traits. The desired traits promote productivity. Recently, genetically engineered crops have been introduced. Q: What is the advantage of selecting for certain genetic traits for crops? Choices: - protection from pests - improves taste - Faster growth - promotes productivity A:

Ans:promotes productivity
Ques: Answer the following question given this paragraph: So does the magnetic force cause circular motion? Magnetic force is always perpendicular to velocity, so that it does no work on the charged particle. The particle's kinetic energy and speed thus remain constant. The direction of motion is affected, but not the speed. This is typical of uniform circular motion. The simplest case occurs when a charged particle moves perpendicular to a uniform B -field, such as shown in Figure 22.20. (If this takes place in a vacuum, the magnetic field is the dominant factor determining the motion. ) Here, the magnetic force supplies the centripetal force F c = mv 2 / r . Noting that sin = 1 , we see that. Q: Magnetic force is always perpendicular to what? Choices: - speed - sunlight - length - velocity A:
Ans:
velocity