24. Most biological fuids have a pH value in the range of 25. A 28. Why is carbo

Question

24. Most biological fuids have a pH value in the range of 25. A 28. Why is carbon so important in biology? A) 7-9 B) 5-7 C)7-10 D) 68 is any substance that increases the He concentration of a solution. D) Solude A) Buffer B) Acid C) Base It is a common element en Earth. en t hes vary te electronegstiwty, malking t a good electron donor D) IR can bond to 4 other atoms and form a variety of carbon skeletons and host functional groups. 27. Which of the following is NOT away that carbon skeletons can vary? A) Branching C) Functional group position B) Double bond position D Presance of rings 28. Compound isomers that are minror images of each other Functional is me A) Enantiomers B) Cis-trans isomens C)Svaral ison ers substance is one that does NOT have an affinity for water B) hydrophabic 29. A 30. The components of orpanic molecules that are most commonly involved in A) Functional groups C) lsomers B) Amino acids D) Hydrocarbons functional grouomt group 31. Which of the following is NOT a functional group? 32 Specialized proteine that speed up (catalyze) chemical reactions 33. Which of the following best summarizes the relationship between dehydration and hydrolysis reactions A) Methyl group B) Carbonyl group D) Sulthydyl grou A) Enzymes 8) Anibodies C) Phosphatos D) Steroids A) Hydrolysis reactions create polymers and dehydration reactions create monomers 8) Dehydration reacions assemble polymers bydrolysis reactions break polymers apart C) Dehydration reactions and hydrolysis reactions assemble polymers from monomers D) Dehydration reactions eliminate water from membranes; hydrolysis adds water to membranes. 34. A papode bond is found in which type of biological molecuie? 35. Which of the following are structural polysacchridces? 36. Which of the following is a storage polysaccharide of animals that is found in muscle and liver cells? A) carbohydrate B) Ipid G) nucleic acid D) protein A) starch and glycogen C) cellulose and chitin D) gycogern A) Cellulose B) Amylose C) Glycogen D) Chitin

Explanation / Answer

1.Mostly body fluid have pH 6-8 which is necessary for various process. Hence option B is correct.

2.Acid give H + ions and proton.Hence option B is correct.

3.Carbon can bind to four different type of atom also called chiral nature of carbon.Hence D option is correct.

4.Carbon skeleton can't vary in functional group and can vary in branch,length,ring and double bond position.Hence option C is correct.

5.Enantiomer only vary in confirmations about one substituent.Hence option A is correct.

6.Hydrophobic have affinity towards non polar molecule.Hence option B is correct.

7.Functional group are envolved in reactions.Hence option A is correct.

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