Q: What is a process in which some substances change into different substances? Read this paragraph and choose the correct option from the provided answers: A chemical reaction is a process in which some substances change into different substances. In a chemical reaction, bonds break in reactants and new bonds form in products. Choices: - a toxic reaction - a bio reaction - a thermodynamic reaction - a chemical reaction A:
a chemical reaction

(Question)
Q: Because microorganisms can go through several generations in a matter of hours, their gene expression profiles adapt to the new laboratory environment very quickly. in addition, the vast majority of bacterial species resist being cultured in this? Read this paragraph and choose the correct option from the provided answers: Microbial Genomics: Metagenomics Traditionally, microbiology has been taught with the view that microorganisms are best studied under pure culture conditions, which involves isolating a single type of cell and culturing it in the laboratory. Because microorganisms can go through several generations in a matter of hours, their gene expression profiles adapt to the new laboratory environment very quickly. In addition, the vast majority of bacterial species resist being cultured in isolation. Most microorganisms do not live as isolated entities, but in microbial communities known as biofilms. For all of these reasons, pure culture is not always the best way to study microorganisms. Metagenomics is the study of the collective genomes of multiple species. Choices: - water - substrate - colonies - isolation A:
(Answer)
isolation

Ques: Q: The chemical symbol of which ion is written first in ionic compounds? Read this paragraph and choose the correct option from the provided answers: Ionic compounds are compounds in which positive metal ions and negative nonmetal ions are joined by ionic bonds. In these compounds, the chemical symbol for the positive metal ion is written first, followed by the symbol for the negative nonmetal ion. The video at the following URL gives a fuller explanation of ionic compounds and their formulas: http://www. youtube. com/watch?v=vscoYh6m46M . Choices: - negative ion - good metal ion - last ion - positive metal ion A:
Ans: positive metal ion

(Q).
Q: What do jellyfish use to startle predators? Read this paragraph and choose the correct option from the provided answers: Bioluminescent organisms include jellyfish and fireflies. Jellyfish give off visible light to startle predators. Fireflies give off visible light to attract mates. Choices: - black light - bicellular light - harsh light - visible light A:
(A).
visible light

Ques:Q: What part of the sweet potato store sugar from photosynthesis as starch? Read this paragraph and choose the correct option from the provided answers: Secondary growth of sweet potato roots provides more space to store food. Roots store sugar from photosynthesis as starch. What other starchy roots do people eat?. Choices: - plants - skin - shrubs - roots A:

Ans:roots

Ques: Q: The end of the phospholipid molecule that is polar and attracts water is called what? Read this paragraph and choose the correct option from the provided answers: Figure below shows how phospholipid molecules are arranged in a cell membrane. One end (the head) of each phospholipid molecule is polar and attracts water. This end is called hydrophilic ("water loving"). The other end (the tail) is nonpolar and repels water. This end is called hydrophobic ("water hating"). The nonpolar tails are on the inside of the membrane. The polar heads are on the outside of the membrane. These differences in polarity allow some molecules to pass through the membrane while keeping others out. You can see how this works in the video at the URL below. Choices: - cytosolic - hydrophobic - magnetic - hydrophilic A:
Ans:
hydrophilic