Answer the following question given this paragraph: Planets are held by the force of gravity in elliptical orbits around the Sun. Q: Planets are held by the force of gravity in elliptical orbits around what? Choices: - earth - mars - jupitor - sun A:
sun
(Question)
Answer the following question given this paragraph: Q: Is sleep an active or inactive state in the brain? Choices: - intense - different - inactive - active A:
(Answer)
active
Ques: Answer the following question given this paragraph: Hydrogen Bonds Ionic and covalent bonds are strong bonds that require considerable energy to break. However, not all bonds between elements are ionic or covalent bonds. Weaker bonds can also form. These are attractions that occur between positive and negative charges that do not require much energy to break. Two weak bonds that occur frequently are hydrogen bonds and van der Waals interactions. These bonds give rise to the unique properties of water and the unique structures of DNA and proteins. When polar covalent bonds containing a hydrogen atom form, the hydrogen atom in that bond has a slightly positive charge. This is because the shared electron is pulled more strongly toward the other element and away from the hydrogen nucleus. Because the hydrogen atom is slightly positive (+), it will be attracted to neighboring negative partial charges (). When this happens, a weak interaction occurs between the + charge of the hydrogen atom of one molecule and the charge of the other molecule. This interaction is called a hydrogen bond. This type of bond is common; for example, the liquid nature of water is caused by the hydrogen bonds between water molecules (Figure 2.7). Hydrogen bonds give water the unique properties that sustain life. If it were not for hydrogen bonding, water would be a gas rather than a liquid at room temperature. Q: Breaking of weak bonds, which tend to form between positive and negative charges, does not require much what? Choices: - catalyzation - heat - time - energy A:
Ans: energy
(Q).
Answer the following question given this paragraph: Some bacteria also have tail-like structures called flagella ( Figure below ). Flagella help bacteria move. As the flagella rotate, they spin the bacteria and propel them forward. It is often said the flagella looks like a tiny whip, propelling the bacteria forward. Though some eukaryotic cells do have a flagella, a flagella in eukaryotes is rare. Q: What type of cells are flagella rare in? Choices: - intracellular - cancer. - synthetic - eukaryotic A:
(A).
eukaryotic
Ques:Answer the following question given this paragraph: When zinc reacts with hydrochloric acid, the reaction bubbles vigorously as hydrogen gas is produced. The production of a gas is also an indication that a chemical reaction is occurring. Q: What branch of biology focuses on heredity? Choices: - botany - cell biology - zoology - genetics A:

Ans:genetics
Ques:Answer the following question given this paragraph: Eris is the largest known dwarf planet in the solar system. It is 27 percent larger than Pluto ( Figure above ). Like Pluto and Makemake, Eris is in the Kuiper belt. But Eris is about three times farther from the Sun than Pluto. Because of its distance, Eris was not discovered until 2005. Early on, it was thought that Eris might be the tenth planet. Its discovery helped astronomers realize that they needed a new definition of "planet. " Eris has a small moon that orbits Eris once about every 16 days. Q: What large dwarf planet in our solar system was only discovered in 2005? Choices: - artemis - Cerus - zeus - eris A:

Ans:
eris