Discussion
Home ‣ Biochemistry ‣ Structure and Properties of Peptides See What Others Are Saying!
- Question
In ?-pleated sheet structures neighbouring
Options- A. chains lie in a flat plane
- B. neighboring residues are hydrogen bonded
- C. neighboring chains are connected by a-helices
- D. neighboring chains are hydrogen bonded
- Correct Answer
- neighboring chains are hydrogen bonded
- 1. Which pair of amino acids absorbs the most UV light at 280 nm?
Options- A. Threonine & Histidine
- B. Trp & Tyrosine
- C. Cystein & Asparagine
- D. Phenylalnine & Proline Discuss
- 2. The peptide bond in proteins is
Options- A. only found between proline residues
- B. usually cis unless proline is the next amino acid
- C. usually trans unless proline is the next amino acid
- D. is planar because of steric hinderance Discuss
- 3. In cells having organelles, the steps of the Krebs cycle and the electron transport system occur in the
Options- A. cell membrane
- B. mitochondria
- C. endoplasmic reticulum
- D. none of these Discuss
- 4. ?-Lymphocytes are often called simply
Options- A. B cells
- B. T cells
- C. T Lymphocytes
- D. none of these Discuss
- 5. Which of these hormones is a catecholamine?
Options- A. Follitropin
- B. Norepinephrine
- C. Tetraiodothyronine
- D. Tetrahydrofolate Discuss
- 6. Which of these is a type of specific defense against pathogens?
Options- A. Lymphocytes
- B. Macrophages
- C. Phagocytes
- D. Leukocytes Discuss
- 7. The HIV virus infects primarily
Options- A. brain cells
- B. cells in the immune system
- C. red blood cells
- D. liver cells Discuss
- 8. Which of the following is the reduced form of a temporary electron carrier molecule?
Options- A. FADH2
- B. ATP
- C. NADP+
- D. CO2 Discuss
- 9. Signal peptide protein removal that is translocated across a membrane is accomplished by
Options- A. fMet aminopeptidase
- B. trypsin
- C. signal peptidase
- D. chymotrypsin Discuss
- 10. Antigen, when injected in the body activates its specific lymphocytes in the
Options- A. blood circulation
- B. draining lymph nodes
- C. MALT (mucosa associated
- D. spleen lymphoid tissue Discuss
More questions
Correct Answer: Trp & Tyrosine
Correct Answer: usually trans unless proline is the next amino acid
Correct Answer: mitochondria
Correct Answer: B cells
Correct Answer: Norepinephrine
Correct Answer: Lymphocytes
Correct Answer: cells in the immune system
Correct Answer: FADH2
Correct Answer: signal peptidase
Correct Answer: draining lymph nodes
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