To solve the problem, we need to identify the bacterium commonly used in genetic engineering to produce human insulin chains.
1. Understanding the Process:
In biotechnology, certain bacteria are genetically modified to produce human insulin chains. The most commonly used bacterium for this purpose is Escherichia coli (E. coli), which is known for its ability to take up foreign DNA and produce proteins, such as insulin, from that DNA.
2. Analyzing the Options:
Let's evaluate the provided options:
3. Conclusion:
The correct bacterium for producing human insulin chains is E. coli.
Final Answer:
The correct answer is (B) E. coli.
Match the following:
List - I | List - II | ||
---|---|---|---|
A) | Thyroid gland | I) | Calcitonin |
B) | Adrenal medulla | II) | Nor epinephrine |
C) | Pineal gland | III) | Melatonin |
D) | Pancreas | IV) | Glucagon |
Study the following and pick up the correct combinations:
S.No. | Spinal nerves | No. of pairs in man | Location |
---|---|---|---|
I | Cervical nerves | 7 pairs | Neck region |
II | Thoracic nerves | 12 pairs | Thorax |
III | Sacral nerves | 5 pairs | Lumbar region |
IV | Coccygeal nerves | 1 pair | Caudal region |
Match the following:
List - I | List - II | ||
---|---|---|---|
A) | Radius, ulna | I) | Fore limb |
B) | Tibia, fibula | II) | Hind limb |
C) | Scapula, clavicle | III) | Pectoral girdle |
D) | Ilium, pubis | IV) | Pelvic girdle |
The percentage error in the measurement of mass and velocity are 3% and 4% respectively. The percentage error in the measurement of kinetic energy is:
If \( L, M, N \) are the midpoints of the sides PQ, QR, and RP of triangle \( \Delta PQR \), then \( \overline{QM} + \overline{LN} + \overline{ML} + \overline{RN} - \overline{MN} - \overline{QL} = \):