Chat with AIExam 4: Biomolecules
Nonessential amino acids are rarely used in the making of proteins in the human body.
(74) 
VerifiedFalse
Which of the following is not true of both triglycerides and phospholipids?
(89) VerifiedC
Compare and contrast the structures of DNA and RNA.
(87) 
Answered by Examlex AI CopilotDNA and RNA are both nucleic acids that play a crucial role in the storage and transmission of genetic information. However, they have several key differences in their structures.
DNA, or deoxyribonucleic acid, is a double-stranded molecule that forms a double helix structure. It is composed of a sugar-phosphate backbone with nucleotide bases attached to the sugar molecules. The four nucleotide bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G). These bases pair up in a specific way: A always pairs with T, and C always pairs with G. This complementary base pairing allows DNA to replicate and transmit genetic information accurately.
RNA, or ribonucleic acid, is typically single-stranded and does not form a double helix structure. Like DNA, it is composed of a sugar-phosphate backbone with nucleotide bases attached to the sugar molecules. However, RNA contains the base uracil (U) instead of thymine (T), and it pairs with adenine (A) during transcription. RNA also has three main types: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA), each with specific functions in protein synthesis.
In summary, DNA is a double-stranded molecule with the bases A, T, C, and G, while RNA is typically single-stranded with the bases A, U, C, and G. Additionally, DNA forms a double helix structure, while RNA does not. These structural differences reflect the distinct roles that DNA and RNA play in the storage and transmission of genetic information.
When ATP is in short supply, muscles can use creatine phosphate for extra energy.
(90) If one side of a DNA molecule is A-T-C-G-G-T-C-A-G, what would the bases be on the other side of the molecule? On what do you base your answer?
(69) Match each term to its corresponding descriptive phrase.
-Lipid found in sex hormone that is made up of four rings
(86) Sometimes referred to as animal starch, _____ is the main polysaccharide in the body.
(85) Enzymes that are exposed to high heat or low pH solutions lose their ability to function. What causes this to happen? Be specific.
(79) The quaternary structure of a protein contains more than one polypeptide chain.
(87) The joining of amino acids in a peptide bond is an example of the process of hydrolysis.
(72) Adenine and thymine are referred to as purine bases, which are important constituents of a DNA molecule.
(76) Which energy-releasing or energy-transferring molecule does not contain a nucleotide?
(72) The alpha helix is an example of which level of protein structure?
(79) Match each term to its corresponding descriptive phrase.
-Types of lipids that are called tissue hormones
(83) The element that is present in all proteins but not in carbohydrates is:
(74) Proteins are the most abundant of the carbon-containing compounds in the body.
(86) Which level of protein structure refers to the number, kind, and sequence of amino acids?
(68) 
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