Answer the following question given this paragraph: Electrons are organized into shells and subshells about the nucleus of an atom. Q: Electrons are organized into shells and subshells about the nucleus of this? Choices: - compound - molecule - element - atom A:
atom
Answer the following question given this paragraph: Reproduction Reproduction in prokaryotes is asexual and usually takes place by binary fission. Recall that the DNA of a prokaryote exists as a single, circular chromosome. Prokaryotes do not undergo mitosis. Rather the chromosome is replicated and the two resulting copies separate from one another, due to the growth of the cell. The prokaryote, now enlarged, is pinched inward at its equator and the two resulting cells, which are clones, separate. Binary fission does not provide an opportunity for genetic recombination or genetic diversity, but prokaryotes can share genes by three other mechanisms. Q: Prokaryotes divide via binary fission and do not undergo what process of cell division? Choices: - prophase - meiosis - fusion - mitosis A:
mitosis
Q: Answer the following question given this paragraph: A: You can tell that they are different compounds from their very different properties. Carbon dioxide is a harmless gas that living things add to the atmosphere during respiration. Carbon monoxide is a deadly gas that can quickly kill people if it becomes too concentrated in the air. Q: What type of gas is a harmless gas that living things add to the atmosphere during respiration? Choices: - helium - oxygen - Hydrogen - carbon dioxide A:
A: carbon dioxide
Question: Answer the following question given this paragraph: Density is defined as the mass of an object divided by its volume. Propose a unit of density in terms of the fundamental SI units. Q: Density is defined as the mass of an object divided by its what? Choices: - size - liquid - growth - volume A:
Answer: volume
*Question*
Answer the following question given this paragraph: Introduction The individual sexually reproducing organismincluding humansbegins life as a fertilized egg, or zygote. Trillions of cell divisions subsequently occur in a controlled manner to produce a complex, multicellular human. In other words, that original single cell was the ancestor of every other cell in the body. Once a human individual is fully grown, cell reproduction is still necessary to repair or regenerate tissues. For example, new blood and skin cells are constantly being produced. All multicellular organisms use cell division for growth, and in most cases, the maintenance and repair of cells and tissues. Single-celled organisms use cell division as their method of reproduction. Q: The fertilized egg that sexually reproducing organisms begin life as is known as what? Choices: - gamete - fetus - infant - zygote A:
**Answer**
zygote
Q: Answer the following question given this paragraph: Third, there are some exceptions to the previous point. A few elements, all metals, can form more than one possible charge. For example, iron atoms can form 2+ cations or 3+ cations. Cobalt is another element that can form more than one possible charged ion (2+ and 3+), while lead can form 2+ or 4+ cations. Unfortunately, there is little understanding which two charges a metal atom may take, so it is best to just memorize the possible charges a particular element can have. Note the convention for indicating an ion. The magnitude of the charge is listed as a right superscript next to the symbol of the element. If the charge is a single positive or negative one, the number 1 is not written; if the magnitude of the charge is greater than 1, then the number is written before the + or sign. An element symbol without a charge written next to it is assumed to be the uncharged atom. Naming an ion is straightforward. For a cation, simply use the name of the element and add the word ion (or if you want to be more specific, add cation) after the element's name. So Na+ is the sodium ion; Ca2+ is the calcium ion. If the element has more than one possible charge, the value Saylor URL: http://www. saylor. org/books. Q: An element symbol without a charge written next to it is assumed to be what? Choices: - dead atom - corroborate atom - surfactants atom - uncharged atom A:
A: uncharged atom