Answer the following question given this paragraph: Simple Model of DNA. In this simple model of DNA, each line represents a nucleotide chain. The double helix shape forms when the two chains wrap around the same axis. Q: What distinctive dna shape forms when the two nucleotide chains wrap around the same axis? Choices: - single spiral - chain helix - double spiral - double helix A:
double helix
(Question)
Answer the following question given this paragraph: Electric devices, such as lights and household appliances, change electric current to other forms of energy. For example, an electric stove changes electric current to thermal energy. Other common devices, such as mobile phones and computers, use electric current for another purpose: to encode information. A message encoded this way is called an electronic signal , and the use of electric current for this purpose is called electronics . For an overview of electronics and electronic signals, read the short article at this URL: http://www. bbc. co. uk/scotland/learning/bitesize/standard/physics/electronics/overview_rev1. shtml . Q: An electric stove changes electric current to what form of energy? Choices: - thermodynamic - kinetic - nuclear - thermal A:
(Answer)
thermal
Ques: Answer the following question given this paragraph: Light from objects at different distances is focused by the lens of the eye. Muscles in the eye control the shape of the lens so the light is focused on the back of the eye no matter how far the object is from the lens. Q: Light from objects at different distances is focused by what part of the eye? Choices: - iris - pupil - meniscus - lens A:
Ans: lens
(Q).
Answer the following question given this paragraph: When fuel is burned, most of the energy is released as heat. Some of this heat can be used to do work. Heat cooks food or warms your house. Sometimes the heat is just waste heat. It still heats the environment, though. Q: When fuel is burned, most of the energy is released in what form? Choices: - precipitation - carbon dioxide - humidity - heat A:
(A).
heat
Ques:Answer the following question given this paragraph: Some children are born with genetic defects that are not carried by a single gene. Instead, an error in a larger part of the chromosome or even in an entire chromosome causes the disorder. Usually the error happens when the egg or sperm is forming. Having extra chromosomes or damaged chromosomes can cause disorders. Q: Having extra chromosomes or damaged chromosomes can cause what? Choices: - deformities - problems - diseases - disorders A:

Ans:disorders
Ques: Answer the following question given this paragraph: Solid carbon dioxide is also called dry ice. That's because when it gets warmer and changes state, it doesn't change to a liquid by melting. Instead, it changes directly to a gas without going through the liquid state. The process in which a solid changes directly to a gas is called sublimation . It occurs when energy is added to a solid such as dry ice. You can watch dry ice changing directly to a gas in the video at this URL: http://www. youtube. com/watch?v=J8mDGwf-5x0 . Q: What is another term for dry ice? Choices: - liquid nitrogen - ice crystals - carbonated ice - solid carbon dioxide A:
Ans:
solid carbon dioxide