Answer the following question given this paragraph: Scientific notation is a way of writing very large or very small numbers that uses exponents. Numbers are written in the format a 10 b . Q: When does a baby double in length and triple in weight? Choices: - terrible twos - fetal stage - pre-adolescence - infancy A:
infancy
Answer the following question given this paragraph: Q: The remainder is transferred by contraction of what before the ventricles begin to contract? Choices: - the arteries - the stomach - the large intestine - the atria A:
the atria
Q: Answer the following question given this paragraph: Most protists are so small that they can be seen only with a microscope. Protists are mostly unicellular (one-celled) eukaryotes. A few protists are multicellular (many-celled) and surprisingly large. For example, kelp is a multicellular protist that can grow to be over 100-meters long ( Figure below ). Multicellular protists, however, do not show cellular specialization or differentiation into tissues. That means their cells all look the same and, for the most part, function the same. On the other hand, your cells often are much different from each other and have special jobs. Q: What type of eukaryotes are protists normally? Choices: - multicellular - photosynthetic - immature - unicellular A:
A: unicellular
Question: Answer the following question given this paragraph: All living cells are surrounded by a cell membrane. Plant cells (Figure 17.3 "An Idealized Plant Cell") and animal cells (Figure 17.4 "An Idealized Animal Cell") contain a cell nucleus that is also surrounded by a membrane and holds the genetic information for the cell. (For more information about genetics and DNA, see Chapter 19 "Nucleic Acids". ) Everything between the cell membrane and the nuclear membraneincluding Saylor URL: http://www. saylor. org/books. Q: What part of the cell is surrounded by a membrane and holds the genetic information for the cell? Choices: - cell wall - upper - lower - nucleus A:
Answer: nucleus
*Question*
Answer the following question given this paragraph: Ribosomes are small organelles and are the site of protein synthesis. Ribosomes are found in all cells. Q: What are small organelles and are the site of protein synthesis? Choices: - nucleus - vacuoles - chloroplasts - ribosomes A:
**Answer**
ribosomes
Answer the following question given this paragraph: During World War II, battleships and submarines carried echo sounders. Their goal was to locate enemy submarines ( Figure below ). Echo sounders produce sound waves that travel outward in all directions. The sound waves bounce off the nearest object and then return to the ship. Scientists know the speed of sound in seawater. They then can calculate the distance to the object that the sound wave hit. Most of these sound waves did not hit submarines. They instead were used to map the ocean floor. Q: What produces sound waves that travel outward in all directions in water? Choices: - echo chamber - ultrasound machines - amplifiers - echo sounders A:
echo sounders