Answer:
<em>The correct option is 15 seconds.</em>
Explanation:
At the time of exercise, our muscles contract rapidly. The contraction of the muscles is a phenomenon which occurs from the energy source ATP.
There are four sources of obtaining ATP at the time of muscle contraction. One of this source is phosphocreatine.
The phosphocreatine can create ATP for 15 seconds after the muscles start to contract. Phosphocreatine has the ability to donate a phosphate group to ADP to produce ATP.
Explanation:
For people 7 years of age and older who have not been previously immunized against tetanus, WHO recommends a 3-dose primary vaccination series with tetanus-diphtheria containing vaccine followed by 3 booster doses, to be protected throughout life.
Answer:
The appropriate primary vaccination series is as follows:
- First dose - week one
- Second dose - 4 - 8 weeks after the first dose
- Third dose - 6 - 12 months after the second dose
The correct answer is: When a sperm cell penetrates the oocyte membrane
The oocyte (is arrested at an early stage of the first meiotic division as a primary oocyte. During each menstrual cycle, one the day before ovulation gonadotropin hormone (luteinizing hormone) stimulates completion of meiosis 1. After the meiosis 1, 2 haploid daughter cells are formed: one becomes the secondary oocyte the other forms the first polar body. Newly formed secondary oocyte starts meiosis 2 which arrests at metaphase which will continue after the fertilization.
The answer to your question is D. X and Y