Ques:Answer the following question given this paragraph: Can Snail Venom Be Used as a Pharmacological Painkiller? Marine snails of the genus Conus (Figure 28.25) attack prey with a venomous sting. The toxin released, known as conotoxin, is a peptide with internal disulfide linkages. Conotoxins can bring about paralysis in humans, indicating that this toxin attacks neurological targets. Some conotoxins have been shown to block neuronal ion channels. These findings have led researchers to study conotoxins for possible medical applications. Conotoxins are an exciting area of potential pharmacological development, since these peptides may be possibly modified and used in specific medical conditions to inhibit the activity of specific neurons. For example, these toxins may be used to induce paralysis in muscles in specific health applications, similar to the use of botulinum toxin. Since the entire spectrum of conotoxins, as well as their mechanisms of action, are not completely known, the study of their potential applications is still in its infancy. Most research to date has focused on their use to treat neurological diseases. They have also shown some efficacy in relieving chronic pain, and the pain associated with conditions like sciatica and shingles. The study and use of biotoxinstoxins derived from living organismsare an excellent example of the application of biological science to modern medicine. Q: Conotoxins released by certain marine snails can bring about paralysis in humans, indicating that this toxin attacks what system? Choices: - cerebral - circulatory - cardiovascular - neurological A:

Ans:neurological
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Ques:Answer the following question given this paragraph: Weather refers to conditions of the atmosphere at a given time and place. It occurs because of unequal heating of the atmosphere. Humidity, clouds, and precipitation are important weather factors. Q: How are weather patterns formed? Choices: - carbon dioxide - pollution from planes - the moon's gravitational pull - uneven heating of the atmosphere A:

Ans:uneven heating of the atmosphere
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Ques:Answer the following question given this paragraph: Describing the flow of energy within an ecosystem essentially answers this question. To survive, one must eat. Why? To get energy. Food chains and webs describe the transfer of energy within an ecosystem, from one organism to another. In other words, they show who eats whom. Q: Food chains and what describe the transfer of energy within an ecosystem, from one organism to another? Choices: - spider webs - fuel webs - the webs - food webs A:

Ans:food webs
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Ques:Answer the following question given this paragraph: The most common type of cancer in adult males is cancer of the prostate gland. The prostate gland is part of the male reproductive system. About one third of all cancers in men are prostate cancers. Q: What is the most common type of cancer in adult males? Choices: - lung - leukemia - stomach - prostate A:

Ans:
prostate
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