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Title: Chemistry Help Please Post by: lena213 on Jul 31, 2011 I have one hour to complete this any help would be appreciated
Question 2 (Multiple Choice Worth 10 points) Chemically, fats and oils are _________. esters ketones alcohols amines Question 3 (Multiple Choice Worth 10 points) Which of the following is an example of a colloid? a solution of sodium chloride (i.e. salt water) cheese an air mixture containing oxygen, nitrogen, and carbon dioxide all of these are colloids Question 4 (Multiple Choice Worth 10 points) Substances that are messengers in the body and are involved in temperature and blood pressure, pain perception, and mood swing, belong to a class of compounds known as _______________. steroids neurotransmitters analgesics tetracyclines Question 5 (Multiple Choice Worth 10 points) Which of the following is “chiral” A compound with four different groups attached to a central carbon atom A compound with five different group attached to a central carbon atom A compound with three different group attached to a central carbon atom A compound with two of same atoms attached to a central carbon atom Question 6 (Multiple Choice Worth 10 points) How is "homeopathy" different from true science and real medicine, and thus should be considered with caution? Homeopathic treatment methods have not been subjected to the same rigorous scientific and FDA standards as most modern medical practices and treatments. Homeopathy uses minute doses of natural substances that, in a healthy person, would produce symptoms of the same disease as opposed to basing results on a dose-response relationship. Homeopathic "medications" often contain NONE of the purported active ingredient. All of these are characteristics of homeopathy that separate this field from science and medicine. Question 7 (Multiple Choice Worth 10 points) _______ is the study of the chemistry of living organisms. matter geochemistry biochemistry political science Question 8 (Multiple Choice Worth 10 points) In the age group 25-34 years old, the leading cause of death is ___________. HIV infection Accidents Heart disease Cancer Question 9 (Multiple Choice Worth 10 points) Carbohydrates, proteins, and DNA are all _________. Inorganic compounds Polymers Small molecules Helical structured molecules Question 10 (Multiple Choice Worth 10 points) Enzymes combine with a substrate at active sites and thereby ___________ lower the energy of activation for a reaction always form an unstable molecule between the enzyme and the substrate all consumes half of the substrate supply energy to a reaction Question 11 (Multiple Choice Worth 10 points) Which is not an organic functional group characteristic of carbohydrates ? –CHO –OH –C-C-O-H –NH2 Title: Re: Chemistry Help Please Post by: lewis on Jul 31, 2011 Chemically, fats and oils are _________.
esters ketones alcohols amines Question 3 (Multiple Choice Worth 10 points) Which of the following is an example of a colloid? a solution of sodium chloride (i.e. salt water) cheese an air mixture containing oxygen, nitrogen, and carbon dioxide all of these are colloids Question 4 (Multiple Choice Worth 10 points) Substances that are messengers in the body and are involved in temperature and blood pressure, pain perception, and mood swing, belong to a class of compounds known as _______________. steroids neurotransmitters analgesics tetracyclines Question 5 (Multiple Choice Worth 10 points) Which of the following is “chiral” A compound with four different groups attached to a central carbon atom A compound with five different group attached to a central carbon atom A compound with three different group attached to a central carbon atom A compound with two of same atoms attached to a central carbon atom Question 6 (Multiple Choice Worth 10 points) How is "homeopathy" different from true science and real medicine, and thus should be considered with caution? Homeopathic treatment methods have not been subjected to the same rigorous scientific and FDA standards as most modern medical practices and treatments. Homeopathy uses minute doses of natural substances that, in a healthy person, would produce symptoms of the same disease as opposed to basing results on a dose-response relationship. Homeopathic "medications" often contain NONE of the purported active ingredient. All of these are characteristics of homeopathy that separate this field from science and medicine. Question 7 (Multiple Choice Worth 10 points) _______ is the study of the chemistry of living organisms. matter geochemistry biochemistry political science Question 8 (Multiple Choice Worth 10 points) Carbohydrates, proteins, and DNA are all _________. Inorganic compounds Polymers Small molecules Helical structured molecules Question 10 (Multiple Choice Worth 10 points) Enzymes combine with a substrate at active sites and thereby ___________ lower the energy of activation for a reaction always form an unstable molecule between the enzyme and the substrate all consumes half of the substrate supply energy to a reaction Question 11 (Multiple Choice Worth 10 points) Which is not an organic functional group characteristic of carbohydrates ? –CHO –OH –C-C-O-H –NH2 Title: Re: Chemistry Help Please Post by: lena213 on Aug 1, 2011 Thanks Lewis I wish you would have been online when I took my darn quiz! Lets just say I didnt do too well, but if I had these answers I would have passed with flying colors. I have 3 more assignments left in this class and I HAVE TO PASS to obtain my certificate in Forensics. Any possible way you can let me know the next time you will be online so you can help me with my final quiz I currently have a 78 in the class and my final grade rests on these last 3 assignments any help would be greatly apprecitated!
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