(Q).
Answer the following question given this paragraph: Symbiosis is a close relationship between two species in which at least one species benefits. Q: What is a close relationship between two species in which at least one species benefits? Choices: - endosymbiosis - parasitism - morphogenesis - symbiosis A:
(A).
symbiosis

(Q).
Answer the following question given this paragraph: During meiosis, homologous chromosomes separate and go to different gametes. Thus, the two alleles for each gene also go to different gametes. At the same time, different chromosomes assort independently. As a result, alleles for different genes assort independently as well. In these ways, alleles are shuffled and recombined in each parent's gametes. Q: When do homologous chromosomes separate and go to different gametes? Choices: - during electrolysis - before meiosis - after meiosis - during meiosis A:
(A).
during meiosis

(Q).
Answer the following question given this paragraph: Note Sometimes the word pure is added to substance, but this is not absolutely necessary. By definition, any single substance is pure. The smallest part of an element that maintains the identity of that element is called an atom. Atoms are extremely tiny; to make a line 1 inch long, you would need 217 million iron atoms. The smallest part of a compound that maintains the identity of that compound is called a molecule. Molecules are composed of atoms that are attached together and behave as a unit. Scientists usually work with millions and millions of atoms and molecules at a time. When a scientist is working with large numbers of atoms or molecules at a time, the scientist is studying the macroscopic view of the universe. However, scientists can also describe chemical events on the level of individual atoms or molecules, which is referred to as the microscopic viewpoint. We will see examples of Saylor URL: http://www. saylor. org/books. Q: The smallest part of an element that maintains the identity of that element is called what? Choices: - lattice - nucleus - neutron - atom A:
(A).
atom