What do the surface features of the moon tell you about its history? The surface of the moon The moon’s surface is covered with dead volcanoes, impact craters, and lava flows, some visible to the unaided stargazer. But the moon lacks all three of these cleanup elements, so the history of the solar system is […]

How can you use Quartz to determine the hardness of other minerals? By using a simple scratch test, you can determine the relative hardness of an unknown mineral. Select a fresh, clean surface on the specimen to be tested. Hold the specimen firmly and attempt to scratch it with the point of an object of […]

Why does a steel ship float while a block of the same steel sinks? A piece of steel sinks in water because steel is denser than water. However, a steel ship is a hollow object made of steel and contains a lot of air in it. Due to presence of a lot of air in […]

What are the organelles of the cell and their functions? What’s found inside a cell Organelle Function Nucleus DNA Storage Mitochondrion Energy production Smooth Endoplasmic Reticulum (SER) Lipid production; Detoxification Rough Endoplasmic Reticulum (RER) Protein production; in particular for export out of the cell What is the best way to describe a cell organelle? An […]

Which cell is produced as a direct result of meiosis? sperm What is produced as a result of mitosis? Mitosis is used to produce daughter cells that are genetically identical to the parent cells. The cell copies – or ‘replicates’ – its chromosomes, and then splits the copied chromosomes equally to make sure that each […]

What do the acacia ants get from the bullhorn acacia tree? Bullhorn acacia is best known for its symbiotic relationship with Pseudomyrmex ferruginea, an ant that lives in its hollowed-out thorns. In return, the tree supplies the ants with Beltian bodies, or protein-lipid nodules, and nectar. These Beltian bodies have no known function other than […]

Which of the following is not a product of Krebs cycle? While the Krebs cycle does produce carbon dioxide, this cycle does not produce significant chemical energy in the form of adenosine triphosphate (ATP) directly, and this reaction sequence does not require any oxygen. What are the 4 products of the citric acid cycle? Citric […]

Why did Southerners use the term scalawags? Like “carpetbagger,” the term “scalawag” has a long history of use as a slur. Typically, it was used by conservative, pro-federation Southerners to derogate individuals whom they viewed as betraying Southern values by supporting Northern policies such as desegregation. How did the federal government’s power change during reconstruction? […]

Is a compound made of atoms or molecules? A compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. What is the name of a compound that […]

What does the endoplasmic reticulum do? The endoplasmic reticulum can either be smooth or rough, and in general its function is to produce proteins for the rest of the cell to function. The rough endoplasmic reticulum has on it ribosomes, which are small, round organelles whose function it is to make those proteins. How does […]