A 5.70-g chunk of potassium is dropped into 1.00 kg water at 24.2°C. What is the final temperature of the water after the preceding reaction occurs? Assume that all the heat is used to raise the temperature of the water. (Never run this reaction. It is very dangerous; it bursts into flame!) Temperature = °C

Match the following amino acids with their chemical properties H -N-CIC- A -A ✓ B но с D VE ✓ F ✓ G / CH3 CH3 CH B H но -N-C-C- feed C но -N-C-C- H CH₂ D HO -N-CIC- 1 H CH₂ OH E но ||| -N-C-C- II H CH₂ I CH₂ CH₂ CH₂ T NH3 I. Acidic II. Nonpolar III. Polar uncharged IV, Basic + F O HO -N-C-C- H CH₂ NH₂ G но | || -N-C-C- I H CH₂ 1

Kidney stones are crystals of calcium oxalate that form in the kidney, ureter, or bladder. Small kidney stones are passed out of the body easily, but larger kidney stones may block the ureter causing severe pain. If the [Ca2+] in blood plasma is 5 × 10-3 M, what [C2O42-] must be present to form a kidney stone? (Calcium oxalate Ksp = 2.3 x 10-9)

Only typed solution

Is peptide bond 2 (colored red) drawn cis or trans? O trans O cis NH₂ SH NH 1 01 OH HN CH3 OH

Tavie To.3 (Pages 550-550) in te texwook anu iuenuiy ie type of TIONCovalenIL interacuon expecieu Delweern uie side char acids. the appropriate items to their respective bins. Reset isoleucine and proline valine and phenylalanine glutamate and arginine glutamine and serine Hydrogen bonds Hydrophobic interactions Salt bridge vious 近

Consider the hexapeptide S-H-I-R-M-P Draw the structure at pH 1.0. What is the charge at this point? Draw the structure at pH 7.4. What is the charge at this point? Determine the pl and draw its structure.

1a. Describe the formation of a bond between two amino acids that craves a peptide. 1B. The image below is a dipeptide. How can you always identified the peptide bond between amino acids?

When patients are found to have increases or decreases in their total protein & albumin values, this test might be run next to narrow down the disease diagnosis:   Question 19 options:   serum protein electrophoresis   A/G ratio   glucose   cholesterol

H₂N Combination of two or more protein units 7. Which type of cross-link involves interactions between two cysteine amino acids? 8. Which type of cross-link would form between the following amino acids? Η Ο || H₂N-C-C-OH T CH₂ C=O NH₂ Η Ο LL H₂N-C-C-OH T CH₂ OH 9. To what main enzyme class do the nzym that catalyze the following reaction belong? (oxidoreductases, transferases, hydrolases, lyases, isomerases, ligases) HO | || I c-c-N-C-COO + H₂O IT HR₂ R₁ H 1 This bond is cleaved H H₂N-C-COOⓇ I R₂ Wilter navy q H I H₂N-C-C00 1 R₁ •Qisulfide 10. Briefly explain the Lock and Key enzyme model.