Ques: Q: Do metals tend to gain electrons or lose electrons in chemical reactions? Read this paragraph and choose the correct option from the provided answers: Metallic character refers to the level of reactivity of a metal. Metals tend to lose electrons in chemical reactions, as indicated by their low ionization energies. Within a compound, metal atoms have relatively low attraction for electrons, as indicated by their low electronegativities. By following the trend summary in the figure below, you can see that the most reactive metals would reside in the lower left portion of the periodic table. The most reactive metal is cesium, which is not found in nature as a free element. It reacts explosively with water and will ignite spontaneously in air. Francium is below cesium in the alkali metal group, but is so rare that most of its properties have never been observed. Choices: - develop electrons - same number of electrons - gain electrons - lose electrons A:
Ans: lose electrons

Ques: Q: What is the physical environment in which a species lives and to which it has adapted? Read this paragraph and choose the correct option from the provided answers: Another important aspect of a species' niche is its habitat. Habitat is the physical environment in which a species lives and to which it has adapted. Features of a habitat depend mainly on abiotic factors, such as temperature and rainfall. These factors influence the traits of the organisms that live there. Choices: - ecosystem - land mass - farmland - habitat A:
Ans: habitat

Ques: Q: Amino acids are joined together to form a chain at what molecular structure? Read this paragraph and choose the correct option from the provided answers: At the ribosome, the amino acids are joined together to form a chain of amino acids. Choices: - chloroplasts - chromosomes - DNA - ribosomes A:
Ans: ribosomes

Ques: Q: Amplification that occurs in which cells often requires signal transduction pathways involving second messengers? Read this paragraph and choose the correct option from the provided answers: Choices: - axons - optic nerves - catayst cells - sensory receptor A:
Ans:
sensory receptor