Answer the following question given this paragraph: Electrophiles have a strong tendency to react with nucleophiles. CONCEPTUAL PROBLEMS. Q: Electrophiles have a strong tendency to react with what? Choices: - acids - neutrons - resistors - nucleophiles A:
nucleophiles
(Question)
Answer the following question given this paragraph: Another sign of a species' state of health is the density of its populations. Population density is the average number of individuals in a population for a given area. Density is a measure of how crowded or spread out the individuals in a population are on average. For example, a population of 100 deer that live in an area of 10 square kilometers has a population density of 10 deer per square kilometer. Q: What is the term for the average number of individuals in a population for a given area? Choices: - result density - population structure - Area Density - population density A:
(Answer)
population density
Ques: Answer the following question given this paragraph: A wheel and axle is a simple machine that consists of two connected rings or cylinders, one inside the other. Both rings or cylinders turn in the same direction around a single center point. The inner ring or cylinder is called the axle, and the outer one is called the wheel. Besides the Ferris wheel, the doorknob in the Figure below is another example of a wheel and axle. For more examples, go to this URL:. Q: A doorknob and a ferris wheel are examples of what type of simple machine? Choices: - ball and socket - lever and pulley - ball and axle - wheel and axle A:
Ans: wheel and axle
(Q).
Answer the following question given this paragraph: Like bacteria, archaeans are important decomposers. For example, archaeans help break down sewage in waste treatment plants. As decomposers, they help recycle carbon and nitrogen. Q: Archaeans help break down sewage in waste treatment plants, so they fulfill what important role? Choices: - producers - consumers - pollenation - decomposer A:
(A).
decomposer
Ques:Answer the following question given this paragraph: Most carcinogens produce mutations in genes that control the cell cycle. Q: Most carcinogens produce mutations in genes that control what? Choices: - ubiquitous cycle - digestive cycle - proteins cycle - cell cycle A:

Ans:cell cycle
Answer the following question given this paragraph: Figure 4.11 The nucleus stores chromatin (DNA plus proteins) in a gel-like substance called the nucleoplasm. The nucleolus is a condensed region of chromatin where ribosome synthesis occurs. The boundary of the nucleus is called the nuclear envelope. It consists of two phospholipid bilayers: an outer membrane and an inner membrane. The nuclear membrane is continuous with the endoplasmic reticulum. Nuclear pores allow substances to enter and exit the nucleus. Q: Where does the nucleus store chromatin ? Choices: - chloroplasts - ribosome - xerophyte - nucleoplasm A:
nucleoplasm