BIOLOGY Questions And Answers.
| 1. | If DNA strand is GCTATGG mRNA strand synthesized from it would be: |
| |
| A. | CGAUACC |
| B. | CGTATGC |
| C. | CGATACC |
| D. | CGUTCC |
|
|
| 2. | Tissue rejection is executed by: |
| |
| A. | Both B and T lymphocytes |
| B. | Monocytes |
| C. | B-lymphocytes |
| D. | T-lymphocytes |
|
|
| 3. | Which of the following statement best describes the function of sinoatrial node? |
| |
| A. | It sends out electrical impulses to ventricles to contract. |
| B. | It is present at upper end of the left atrium |
| C. | It consists of small number of diffusely oriented cardiac fibers. |
| D. | It sends out electrical impulses to atrial muscles causing both atria to contract. |
|
|
| 4. | A central cavity of the kidney where urine is collected after filtration is known as: |
| |
| A. | Ureter |
| B. | Pelvis |
| C. | Urethra |
| D. | Urinary Bladder |
|
|
| 5. | Aldosterone plays role in: |
| |
| A. | Transport of water |
| B. | Transport of K+ ions into kidney |
| C. | Uptake of sodium in loop of Henle |
| D. | Reabsorption of water |
|
|
