Which statement about enzymes is FALSE? Enzymes may use coenzymes derived from vitamins or cofactors from metallic elements. The shape of the active site on an enzyme is not influenced by the substrate. Most enzymes can catalyze millions of reactions...
Which of the following is a correct statement about enzymes? A. They are composed of lipids. B. They speed up chemical reactions without being consumed. C. They are always composed of proteins. D. They slow down chemical reactions. E. They are only active at high temperatures. ...
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14 Which statement is true of all enzymes? A They are denatured at temperatures above 70 C only. B They increase the rate of random collisions of molecules. C They reduce the amount of energy required to start a reaction. D They are able to speed up a wide variety of reactions. 相关...
7 Which statement describes the effect of temperature on enzymes? A High temperatures denature enzymes making it difficult for substrate molecules to fit into the active site. B High temperatures denature enzymes making it easy for substrate molecules to fit into the active site. C Low temperatures...
- Disaccharides are then further hydrolyzed into monosaccharides (like glucose) by other enzymes (such as maltase). Conclusion for Statement I:The statement claims that carbohydrates are hydrolyzed directly into monosaccharides, which is incorrect. They are first converted into disaccharides before being...
Determine whether the following statement about the respiratory electron transport chain is true or false: Electrons are received from NADH and FADH2. Select the correct answer. Which of the following is not true of NAD+ or NADH? a....
d. hydrolyzed tRNA tRNA Molecules: Transfer RNA (tRNA) molecules transport single amino acids to the ribosome-mRNA complex for the synthesis of proteins. tRNA molecules form covalent bonds with amino acids to transport them. A...
The following is a list of antibiotics or enzymes that attack peptidoglycan or inhibit its synthesis. For each antibiotic, indicate the step in synthesis they inhibit or how it attacks peptidoglycan. a) Penicillin family b) Cephalosp...
Which of the following enzymes has proofreading activity? (a) Ligase (b) Helicase (c) Topoisomerase (d) DNA polymerase (e) Peptidyl transferase.Which statement regarding DNA replication is false? a. a replication bubble forms to copy the DN...