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- Question
The membrane proteins that catalyze active transport reactions differ from soluble enzymes as
Options- A. they are permanently changed during the reaction
- B. the substrates of the reaction are all outside the cell
- C. they do not enhance the rates of reaction
- D. the products of the reaction move in a specific direction
- Correct Answer
- the products of the reaction move in a specific direction
- 1. Over 50% of common cancers are associated with damage to a protein, p53. This protein
Options- A. is a cyclin
- B. is a tumor supressor
- C. is an oncogene
- D. regulates apoptosis Discuss
- 2. Gluconeogenesis requires a higher amount of ATP equivalents as compared to that produced by glycolysis because
Options- A. gluconeogenesis releases energy as heat
- B. glycolysis releases energy as heat
- C. glycolysis occurs in the mitochondria while gluconeogenesis occurs in the cytosol
- D. all of the above Discuss
- 3. Difficulties with somatic gene therapy arise from all of the following except
Options- A. GVHD caused by mature T cells in the transplanted cells
- B. inserting a gene so that it will function properly
- C. limited life span of more mature hematopoietic cells
- D. transducing genetic material into stem cells Discuss
- 4. 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
- 5. 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
- 6. 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
- 7. ?-Lymphocytes are often called simply
Options- A. B cells
- B. T cells
- C. T Lymphocytes
- D. none of these Discuss
- 8. Which of these hormones is a catecholamine?
Options- A. Follitropin
- B. Norepinephrine
- C. Tetraiodothyronine
- D. Tetrahydrofolate Discuss
- 9. Which of these is a type of specific defense against pathogens?
Options- A. Lymphocytes
- B. Macrophages
- C. Phagocytes
- D. Leukocytes Discuss
- 10. The HIV virus infects primarily
Options- A. brain cells
- B. cells in the immune system
- C. red blood cells
- D. liver cells Discuss
More questions
Correct Answer: is a tumor supressor
Correct Answer: glycolysis releases energy as heat
Correct Answer: GVHD caused by mature T cells in the transplanted cells
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
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