Answer the following question given this paragraph: Alpha, beta, and gamma emissions have different abilities to penetrate matter. The relatively large alpha particle is easily stopped by matter (although it may impart a significant amount of energy to the matter it contacts). Beta particles penetrate slightly into matter, perhaps a few centimeters at most. Gamma rays can penetrate deeply into matter and can impart a large amount of energy into the surrounding. Q: Alpha, beta, and gamma emissions are associated with what kind of energy? Choices: - kinetic - electrical - potential - radiation A:
radiation
Answer the following question given this paragraph: Fruits may be classified as simple, aggregate, multiple, or accessory, depending on their origin (Figure 32.22). If the fruit develops from a single carpel or fused carpels of a single ovary, it is known as a simple fruit, as seen in nuts and beans. An aggregate fruit is one that develops from more than one carpel, but all are in the same flower: the mature carpels fuse together to form the entire fruit, as seen in the raspberry. Multiple fruit develops from an inflorescence or a cluster of flowers. An example is the pineapple, where the flowers fuse together to form the fruit. Accessory fruits (sometimes called false fruits) are not derived from the ovary, but from another part of the flower, such as the receptacle (strawberry) or the hypanthium (apples and pears). Q: What plant products may be classified as simple, aggregate, multiple, or accessory, depending on their origin? Choices: - flowers - pods - leaves - fruits A:
fruits
Q: Answer the following question given this paragraph: Problem-Solving Strategies for the Effects of Heat Transfer 1. Examine the situation to determine that there is a change in the temperature or phase. Is there heat transfer into or out of the system? When the presence or absence of a phase change is not obvious, you may wish to first solve the problem as if there were no phase changes, and examine the temperature change obtained. If it is sufficient to take you past a boiling or melting point, you should then go back and do the problem in stepstemperature change, phase change, subsequent temperature change, and so on. Identify and list all objects that change temperature and phase. Identify exactly what needs to be determined in the problem (identify the unknowns). A written list is useful. Make a list of what is given or what can be inferred from the problem as stated (identify the knowns). Solve the appropriate equation for the quantity to be determined (the unknown). If there is a temperature change, the transferred heat depends on the specific heat (see Table 14.1) whereas, for a phase change, the transferred heat depends on the latent heat. See Table 14.2. Substitute the knowns along with their units into the appropriate equation and obtain numerical solutions complete with units. You will need to do this in steps if there is more than one stage to the process (such as a temperature change followed by a phase change). Check the answer to see if it is reasonable: Does it make sense? As an example, be certain that the temperature change does not also cause a phase change that you have not taken into account. Q: What is the term of a phase change if solid water has it's average kinetic energy increased to change it to liquid water? Choices: - boiling - freezing - evaporation - melting A:
A: melting
Question: Answer the following question given this paragraph: Lipids A lipid is one of a highly diverse group of compounds made up mostly of hydrocarbons. The few oxygen atoms they contain are often at the periphery of the molecule. Their nonpolar hydrocarbons make all lipids hydrophobic. In water, lipids do not form a true solution, but they may form an emulsion, which is the term for a mixture of solutions that do not mix well. Q: A lipid is one of a highly diverse group of compounds made up mostly of what? Choices: - nucleic acid - amines - proteins - hydrocarbons A:
Answer: hydrocarbons
*Question*
Answer the following question given this paragraph: Flagella ( flagellum , singular) are long, thin structures that protrude from the cell membrane. Both eukaryotic and prokaryotic cells can have flagella. Flagella help single-celled organisms move or swim towards food. The flagella of eukaryotic cells are normally used for movement too, such as in the movement of sperm cells, which have only a single flagellum. The flagella of either group are very different from each other. Prokaryotic flagella, shown in Figure below , are spiral-shaped and stiff. They spin around in a fixed base much like a screw does, which moves the cell in a tumbling fashion. Eukaryotic flagella are made of microtubules that bend and flex like a whip. Q: What are the long, thin structures that protrude from the cell membrane and help single-celled organisms move or swim towards food? Choices: - microvilli - tentacles - sporangia - flagella A:
**Answer**
flagella
(Q).
Answer the following question given this paragraph: Opposite charges attract, and like charges repel. Q: What do opposite charges do to one another? Choices: - strengthen - weaken - repel - attract A:
(A).
attract