Q: How can nuclear fusion in stars be simulated? Choices: - plutonium accelerators - nitrogen accelerators - nuclear reactors - particle accelerators A:
particle accelerators

Q: In science, what do you call something that always applies under the same conditions? Choices: - theory - hypothesis - scientific method - scientific law A:
scientific law

Q: Q: What are embedded in the membranes of b cells and bind a variety of antigens through their variable regions? Choices: - b.a.p cell receptors - a.m. cell receptors - er cell receptors - b cell receptors A:
A: b cell receptors

Question: Q: What cell structures capture light energy from the sun and use it with water and carbon dioxide to produce sugars for food? Choices: - fibroblasts - ribosomes - nuclei - chloroplasts A:
Answer: chloroplasts

*Question*
Q: What is the lowest layer of the atmosphere? Choices: - ionosphere - chromosphere - lithosphere - troposphere A:
**Answer**
troposphere

(Question)
Q: What types of orbits do comets usually have? Choices: - vertical - convex - spectral - elliptical A:
(Answer)
elliptical