Answer the following question given this paragraph: The scientific method is not a step by step, linear process. It is a way of learning about the world through the application of knowledge. Scientists must be able to have an idea of what the answer to an investigation should be. In order for scientists to make educated guesses about the answers, they will base their guesses on previous knowledge, with the notion of extending that knowledge. Scientists will often make an observation and then form a hypothesis to explain why a phenomenon occurred. They use all of their knowledge and a bit of imagination in their journey of discovery. Q: In the scientific method, what is the initial, unproven explanation for why something is occurring? Choices: - concepts - idea - theories - hypothesis A:
hypothesis
(Question)
Answer the following question given this paragraph: Making these healthy lifestyle choices can also help prevent some types of cancer. In addition, you can lower the risk of cancer by avoiding carcinogens , which are substances that cause cancer. For example, you can reduce your risk of lung cancer by not smoking. You can reduce your risk of skin cancer by using sunscreen. How to choose a sunscreen that offers the most protection is explained below ( Figure below ). Some people think that tanning beds are a safe way to get a tan. This is a myth. Tanning beds expose the skin to UV radiation. Any exposure to UV radiation increases the risk of skin cancer. It doesn't matter whether the radiation comes from tanning lamps or the sun. Q: Avoiding carcinogens helps lower the risk of what? Choices: - radiation - colds and flu - sunburn - cancer A:
(Answer)
cancer
Ques: Answer the following question given this paragraph: Part of a cycle that holds an element or water for a long period of time is called a reservoir . The ocean is a reservoir for water. The deep ocean may hold water for thousands of years. Q: What is part of a cycle that holds an element or water for a long period of time called? Choices: - homeostasis - a ditch - a holding tank - a reservoir A:
Ans: a reservoir
(Q).
Answer the following question given this paragraph: 3.3 The Nucleus and DNA Replication The nucleus is the command center of the cell, containing the genetic instructions for all of the materials a cell will make (and thus all of its functions it can perform). The nucleus is encased within a membrane of two interconnected lipid bilayers, side-by-side. This nuclear envelope is studded with protein-lined pores that allow materials to be trafficked into and out of. Q: What is the name of the command center of the cell? Choices: - mitochondria - molecules - vacuole - nucleus A:
(A).
nucleus
Ques:Answer the following question given this paragraph: Duplications (or amplifications ) lead to multiple copies of a chromosomal region, increasing the number of the genes located within that region. Some genes may be duplicated in their entirety. Q: What leads to multiple copies of a chromosomal region? Choices: - minimilizations - gene modification - subtractions - duplications (or amplifications ) A:

Ans:duplications (or amplifications )
Answer the following question given this paragraph: Traits are controlled by genes on chromosomes. A gene may have different versions called alleles. Q: A gene may have different versions called what? Choices: - genomes - peptides - locus - alleles A:
alleles