Answer the following question given this paragraph: Cancer can also be found in children. But childhood cancer is rare. Leukemia is the main type of cancer in children. It makes up about one third of all childhood cancers. It happens when the body makes abnormal white blood cells. Q: Production of abnormal white blood cells occurs in what cancer, which is the most common form in children? Choices: - Brain - Breast - Bone - leukemia A:
leukemia
(Question)
Answer the following question given this paragraph: Friction is a force that opposes motion. Any two objects in contact have what is called a mutual coefficient of friction. To find the force of friction between them, we multiply the normal force by this coefficient. Like the forces above, it arises due to electromagnetic interactions of atoms in two objects. There are actually two coefficients of friction: static and kinetic. Static friction will oppose initial motion of two objects relative to each other. Once the objects are moving, however, kinetic friction will oppose their continuing motion. Kinetic friction is lower than static friction, so it is easier to keep an object in motion than to set it in motion. There are some things about friction that are not very intuitive:. Q: What is a force that opposes motion? Choices: - tension - momentum - thrust - friction A:
(Answer)
friction
Ques: Answer the following question given this paragraph: A catalyst is a substance that increases the speed of a reaction. Overall, a catalyst is not a reactant and is not used up, but it still affects how fast a reaction proceeds. However, a catalyst does not affect the extent or position of a reaction at equilibrium. It helps a reaction achieve equilibrium faster. Q: What is the term for a substance that causes the speed of a reaction to increase? Choices: - indicate - component - monite - catalyst A:
Ans: catalyst
(Q).
Answer the following question given this paragraph: The axon of many neurons has an outer layer called a myelin sheath (see Figure above ). Myelin is a lipid produced by a type of a glial cell known as a Schwann cell. The myelin sheath acts like a layer of insulation, similar to the plastic that encases an electrical cord. Regularly spaced nodes, or gaps, in the myelin sheath allow nerve impulses to skip along the axon very rapidly. Q: What is the outer layer of an axon that acts like a layer of insulation, similar to the plastic that encases an electrical cord? Choices: - lipids sheath - nerve sheath - layer sheath - myelin sheath A:
(A).
myelin sheath
Ques:Answer the following question given this paragraph: Q: What forms the pathway of water and nutrients from roots to leaves and flower? Choices: - the stamen - the stigma - the pistil - the stem A:

Ans:the stem
Ques:Answer the following question given this paragraph: A tissue is a group of specialized cells of the same kind that perform the same function. Modern plants have three major types of tissues. They're called dermal, ground, and vascular tissues. Q: How many types of major tissues do modern plants have? Choices: - two - seven - four - three A:

Ans:
three