Q: What is the general name for a wave that travels along the surface of a medium? Read this paragraph and choose the correct option from the provided answers: A surface wave is a wave that travels along the surface of a medium. The medium is the matter through which the wave travels. Ocean waves are the best-known examples of surface waves. They travel on the surface of the water between the ocean and the air. Choices: - stack wave - speed wave - light wave - surface wave A:
surface wave

Q: What orbits an atoms' nucleus? Read this paragraph and choose the correct option from the provided answers: An atom has negatively-charged electrons in orbit around its nucleus. Choices: - neutrally charged ions - positively charged protons - isotopes - negatively charged electrons A:
negatively charged electrons

Q: Q: What is the term for the measure of the force of gravity pulling down on an object? Read this paragraph and choose the correct option from the provided answers: Weight is a measure of the force of gravity pulling down on an object. It depends on the object's mass, which is how much matter the object contains. It also depends on the downward acceleration of the object due to gravity, which is the same all over Earth. Weight can be represented by the equation:. Choices: - mass - density - pressure - weight A:
A: weight

Question: Q: What is the final stage of aerobic respiration, when energy from the krebs cycle is transferred to atp? Read this paragraph and choose the correct option from the provided answers: Electron transport is the final stage of aerobic respiration. In this stage, energy from NADH and FADH 2 , which result from the Krebs cycle, is transferred to ATP. Can you predict how this happens? ( Hint: How does electron transport occur in photosynthesis?). Choices: - glycolysis - acetyl-CoA - cytoplasm transport - electron transport A:
Answer: electron transport

*Question*
Q: All dinosaurs (except those which led to birds) went extinct at the end of which period? Read this paragraph and choose the correct option from the provided answers: At the end of the Cretaceous Period, or 65 million years ago, all dinosaurs (except those which led to birds) went extinct. Some scientists believe a possible cause is a collision between the Earth and a comet or asteroid. The collision could have caused tidal waves, changed the climate, increased atmospheric dust and clouds, and reduced sunlight by 10-20%. A decrease in photosynthesis would have resulted in less plant food, leading to the extinction of the dinosaurs. Choices: - Tertiary - Jurassic - Paleogene - cretaceous A:
**Answer**
cretaceous

(Question)
Q: What does a cell need to transform into a cancerous cell? Read this paragraph and choose the correct option from the provided answers: Typically, a series of several mutations that constitutively activate oncogenes and inactivate tumor suppressor genes is required to transform a normal cell into a cancer cell ( Figure below ). Cells have developed a number of control mechanisms to overcome mutations in proto-oncogenes. Therefore, a cell needs multiple mutations to transform into a cancerous cell. A mutation in one proto-oncogene would not cause cancer, as the effects of the mutation would be masked by the normal control of the cell cycle and the actions of tumor suppressor genes. Similarly, a mutation in one tumor suppressor gene would not cause cancer either, due to the presence of many "backup" genes that duplicate its functions. It is only when enough proto-oncogenes have mutated into oncogenes and enough tumor suppressor genes have been deactivated that the cancerous transformation can begin. Signals for cell growth overwhelm the signals for growth regulation, and the cell quickly spirals out of control. Often, because many of these genes regulate the processes that prevent most damage to the genes themselves, DNA damage accumulates as one ages. Choices: - microbes - parasites - adaptations - mutations A:
(Answer)
mutations