Questions in Grade High-school

Questions in Grade High-school

[Done] Which statement correctly describes a chemical reaction? A. Reactants come out of a reaction. B. Energy is always released. C. Bonds between atoms break and new bonds form. D. Products go into a reaction.

[Done] Which of the following statements about matter is true? A. Mass and matter are always the same. B. Matter is made up of atoms and has mass. C. Mass can decrease while matter increases. D. Matter does not exist in the biosphere.

[Done] Which of the following statements is true? A. Acquired mutations are passed down from parent to offspring. B. Mutations are the most fundamental way to add new genes to a gene pool. C. Hereditary mutations are caused by external factors, such as radiation. D. Only somatic mutations are important to evolution because they can be inherited.

[Done] What are the functions of Tokyo?

[Done] A muscle cell undergoes glycolysis to generate pyruvate. Considering that the cell remains under aerobic conditions and moves on to the ETC via the Krebs cycle, which of the following would be the final electron acceptor in this case? A. Hydrogen B. Nitrate C. Oxygen

[Done] If the contents of a cell have a solute concentration of 0.04 percent, which of these solutions would cause it to swell? A. 10–percent solute concentration B. 1–percent solute concentration C. 0.1–percent solute concentration D. 0.01–percent solute concentration

[Done] Of the procedures to analyze data listed, which one is most likely to result in an inaccurate prediction? A. Averaging B. Extrapolation C. Graphing D. Observation

[Done] Select all of the answers that apply. Which of the following are ways the atmosphere supports life? A. Contains trace gases B. Blocks harmful UV rays C. Transports and distributes heat D. Cycles essential elements: C, O, and N

[Done] How does the carbon dioxide necessary for photosynthesis enter plants? A. Through their roots B. Through openings in the leaves called stomata C. The plants produce their own complete supply D. None of the above

[Done] Organic macromolecules called lipids are insoluble in water, are often found in biological membranes and other waterproof coverings, and have the ability to store energy for extended periods of time.