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? Choices: - amplification - isolation - insertion - sublimation A:
sublimation
(Question)
Answer the following question given this paragraph: Tissues may be organized into organs. An organ is a structure composed of two or more types of tissue that work together to do a specific task. For example, the heart is an organ. It consists of muscle, nerve, and other types of tissues. Its task is to pump blood. Q: What is the heart's main task? Choices: - make blood - clean blood - split blood cells - pump blood A:
(Answer)
pump blood
Ques: Answer the following question given this paragraph: Epilepsy is a disease in which seizures occur. A seizure is a period of lost consciousness that may include violent muscle contractions. It is caused by abnormal electrical activity in the brain. Epilepsy may result from an infection, injury, or tumor. In many cases, however, the cause can't be identified. There is no known cure for epilepsy, but the seizures often can be prevented with medicine. Sometimes children with epilepsy outgrow it by adulthood. Q: Abnormal electrical activity in the brain is the cause of what disease associated with seizures? Choices: - anemia - malaria - Alzheimer's - epilepsy A:
Ans: epilepsy
(Q).
Answer the following question given this paragraph: Q: Many protists form what kind of beneficial association with other species? Choices: - Facultative - evolved - Opportunistic - symbiotic A:
(A).
symbiotic
Ques:Answer the following question given this paragraph: The majority of fungi can reproduce both asexually and sexually. This allows them to adjust to conditions in the environment. They can spread quickly through asexual reproduction when conditions are stable. They can increase their genetic variation through sexual reproduction when conditions are changing and variation may help them survive. Q: Most fungi can reproduce in which 2 ways? Choices: - binary fission and fusion - sexually and autonomously - sexually and binary fusion - asexually and sexually A:

Ans:asexually and sexually
Answer the following question given this paragraph: The effects of extracellular signals can also be amplified by enzymatic cascades. At the initiation of the signal, a single ligand binds to a single receptor. However, activation of a receptor-linked enzyme can activate many copies of a component of the signaling cascade, which amplifies the signal. Q: What helps amplify the effects of extracellular signals? Choices: - electrical cascades - spontaneous cascades - mutation cascades - enzymatic cascades A:
enzymatic cascades