Q: Answer the following question given this paragraph: Q: What fibres are seen in some vertebrates that twitch at rates far faster than any human muscle? A:

OPTIONS:
- fast oxidative fibres
- slow twitch fibres
- fast glycolytic fibres
- skeletal muscle fibers

A: skeletal muscle fibers

input: OPTIONS:
- bark
- epidermis
- cuticle
- cell wall Now, answer this question: Answer the following question given this paragraph: The cell wall is a rigid layer that surrounds the cell membrane of a plant cell. It's made mainly of the complex carbohydrate called cellulose. The cell wall supports and protects the cell. The cell wall isn't solid like a brick wall. It has tiny holes in it called pores. The pores let water, nutrients, and other substances move into and out of the cell. Q: What rigid layer surrounds the cell membrane of a plant cell? A:
A:
output: cell wall

Answer the following question given this paragraph: 11.2 Mechanisms of Evolution There are four factors that can change the allele frequencies of a population. Natural selection works by selecting for alleles that confer beneficial traits or behaviors, while selecting against those for deleterious qualities. Mutations introduce new alleles into a population. Genetic drift stems from the chance occurrence that some individuals have more offspring than others and results in changes in allele frequencies that are random in direction. When individuals leave or join the population, allele frequencies can change as a result of gene flow. Q: Out of the four ways that allele frequencies of a population can be changed, which way is caused by individuals leaving or joining the population? A:

OPTIONS:
- Allopatric speciation
- spontaneous mutation
- mass extinction
- gene flow

Answer: gene flow

Problem: OPTIONS:
- shells
- scales
- pores
- gills
Q: Answer the following question given this paragraph: Most ocean mollusks have a gill or gills to absorb oxygen from the water. Q: What do ocean mollusks use to absorb oxygen from the water? A:
Answer: gills

Problem:OPTIONS:
- sugars
- solvents
- acids
- ethers

Answer the following question given this paragraph: Ethers are composed of an oxygen atom that forms single bonds with two carbon atoms. Ethers are relatively unreactive making them good solvents for other organic compounds, such as in the formation of anesthetics. Q: What are composed of an oxygen atom that forms single bonds with two carbon atoms? A:
****
A: ethers

Problem:OPTIONS:
- amplification
- isolation
- insertion
- sublimation

Answer the following question given this paragraph: The direct conversion of a solid to a gas, without an intervening liquid phase, is calledsublimation. The amount of energy required to sublime 1 mol of a pure solid is theenthalpy of sublimation (Hsub). Common substances that sublime at standard temperature and pressure (STP; 0C, 1 atm) include CO2 (dry ice); iodine (Figure 11.18 "The Sublimation of Solid Iodine"); naphthalene, a substance used to protect woolen clothing against moths; and 1,4-dichlorobenzene. As shown in Figure 11.17 "The Three Phases of Matter and the Processes That Interconvert Them When the Temperature Is Changed", the enthalpy of sublimation of a substance is the sum of its enthalpies of fusion and vaporization provided all values are at the same T; this is an application of Hess's law. (For more information about Hess's law, see Chapter 5 "Energy Changes in Chemical Reactions", Section 5.2 "Enthalpy"). Equation 11.3. Q: The direct conversion of a solid to a gas, without an intervening liquid phase, is called what? A:
****
A:
sublimation