Answer the following question given this paragraph: Intensity is defined to be the power per unit area carried by a wave. Power is the rate at which energy is transferred by the wave. In equation form, intensity I is. Q: Intensity is defined to be the power per unit area carried by a what? Choices: - filament - shift - wire - wave A:
wave
Answer the following question given this paragraph: Courtesy of Dr. Triche and the National Cancer Institute. Lymphocytes are the key cells of an immune response . Public Domain. Q: What are the key cells of an immune response? Choices: - keratinocytes - erythrocytes - histiocytes - lymphocytes A:
lymphocytes
Q: Answer the following question given this paragraph: 16 Gregor Mendel and biological inheritance Charles Darwin1 , for all he contributed to the science of biology, never knew about the mechanism by which living things inherit traits from previous generations, or how new traits arise. As any schoolchild can tell you, this mechanism of interitance has since been found to be DNA2 , or deoxyribonucleic acid. DNA allows for stable inheritance of traits: the code in each strand of DNA is replicated precisely through the pairing of basic units along each strand. The error rate in this replication is amazingly low; not even one base pair in a million matches out of sequence. However, when even one base pair is added to a new strain of DNA in an order differently than in the parent chain, it can be the basis of a mutation. These changes in DNA sequences are the microscopic origin of changes in traits of all studied living things. Even the smallest difference in a strand of DNA can result in a change in traits that can cost the life of the organism. Mutations can produce proteins with a new or altered function. In humans, the example of Sickle cell anemia3 is commonly given as its origin is a difference of only one base pair in a section of DNA that encodes red blood cells. Individual sequences of DNA that encode for specific proteins are called genes and are the units of heredity. Each one has a set nucleotide4 , and together all of the genes (and some sequence of DNA that apparently do not code for any biologically important functions) together make up the entire chromosome5. Q: What mechanism is used by living organisms to pass along genes? Choices: - protein - digestion - chlorophyll - dna A:
A: dna
Question: Answer the following question given this paragraph: Q: Scientists use a quantity called __________ as a measure of disorder, or randomness. Choices: - chance level - motion - vector count - entropy A:
Answer: entropy
*Question*
Answer the following question given this paragraph: The amount of space matter takes up is its volume . How the volume of matter is measured depends on its state. Q: What term means the amount of space matter takes up? Choices: - weight - density - mass - volume A:
**Answer**
volume
Q: Answer the following question given this paragraph: Friction is a force that opposes motion. Any two objects in contact have what is called a mutual coefficient of friction. To find the force of friction between them, we multiply the normal force by this coefficient. Like the forces above, it arises due to electromagnetic interactions of atoms in two objects. There are actually two coefficients of friction: static and kinetic. Static friction will oppose initial motion of two objects relative to each other. Once the objects are moving, however, kinetic friction will oppose their continuing motion. Kinetic friction is lower than static friction, so it is easier to keep an object in motion than to set it in motion. There are some things about friction that are not very intuitive:. Q: What is a force that opposes motion? Choices: - tension - momentum - thrust - friction A:
A: friction